BANCOLOMBIA SA (SEC Filing Page | XBRL Cloud Viewer | XBRL Instance)

Line Label Object Class Period Type Balance Report ElementName
1 1001 - Document - Document and Entity Information Network

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http://www.grupobancolombia.com/role/DocumentAndEntityInformation
2 Implied Table Table

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implied:Table
3 Document and Entity Information [Abstract] Abstract cib:DocumentAndEntityInformationAbstract
4 Document Type Concept (Submission Type) For Period dei:DocumentType
5 Amendment Flag Concept (Yes/No) For Period dei:AmendmentFlag
6 Document Period End Date Concept (Date) For Period dei:DocumentPeriodEndDate
7 Document Fiscal Year Focus Concept (Year) For Period dei:DocumentFiscalYearFocus
8 Document Fiscal Period Focus Concept (Fiscal Period) For Period dei:DocumentFiscalPeriodFocus
9 Entity Registrant Name Concept (Text/String) For Period dei:EntityRegistrantName
10 Entity Central Index Key Concept (CIK Number) For Period dei:EntityCentralIndexKey
11 Current Fiscal Year End Date Concept (Month/Day) For Period dei:CurrentFiscalYearEndDate
12 Entity Well-known Seasoned Issuer Concept (Yes/No) For Period dei:EntityWellKnownSeasonedIssuer
13 Entity Voluntary Filers Concept (Yes/No) For Period dei:EntityVoluntaryFilers
14 Entity Current Reporting Status Concept (Yes/No) For Period dei:EntityCurrentReportingStatus
15 Entity Filer Category Concept (Filer Category) For Period dei:EntityFilerCategory
16 Trading Symbol Concept (Text/String) For Period dei:TradingSymbol
17 Entity Common Stock, Shares Outstanding Concept (Shares) As Of dei:EntityCommonStockSharesOutstanding
18 Entity Shell Company Concept (Yes/No) For Period dei:EntityShellCompany
19 Entity Emerging Growth Company Concept (Yes/No) For Period dei:EntityEmergingGrowthCompany
20 1002 - Statement - CONSOLIDATED STATEMENT OF FINANCIAL POSITION Network

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http://www.grupobancolombia.com/role/ConsolidatedStatementOfFinancialPosition
21 Implied Table Table

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implied:Table
22 Statement of financial position [abstract] Abstract ifrs-full:StatementOfFinancialPositionAbstract
23 ASSETS Abstract ifrs-full:AssetsAbstract
24 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
25 Financial assets Investments Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
26 Derivative financial instruments Concept (Monetary) As Of Debit ifrs-full:DerivativeFinancialAssets
27 Financial assets investments and derivative financial instruments Concept (Monetary) As Of Debit cib:FinancialAssetsInvestmentsAndDerivativeFinancialInstruments
28 Loans and advances to customers and financial institutions Concept (Monetary) As Of Debit ifrs-full:DebtInstrumentsHeld
29 Allowance for loans, advances and lease losses Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
30 Loans and advances to customers and financial institutions, net Concept (Monetary) As Of Debit ifrs-full:LoansAndAdvancesToCustomers
31 Assets held for sale and inventories, net Concept (Monetary) As Of Debit ifrs-full:CurrentInventoriesHeldForSale
32 Investment in associates and joint ventures Concept (Monetary) As Of Debit ifrs-full:InvestmentsInSubsidiariesJointVenturesAndAssociates
33 Investment properties Concept (Monetary) As Of Debit ifrs-full:InvestmentProperty
34 Premises and equipment, net Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
35 Goodwill and intangible assets, net Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
36 Deferred tax, net Concept (Monetary) As Of Debit ifrs-full:NetDeferredTaxAssets
37 Other assets, net Concept (Monetary) As Of Debit ifrs-full:OtherAssets
38 TOTAL ASSETS Concept (Monetary) As Of Debit ifrs-full:Assets
39 LIABILITIES AND EQUITY Abstract ifrs-full:EquityAndLiabilitiesAbstract
40 LIABILITIES Abstract ifrs-full:LiabilitiesAbstract
41 Deposits by customers Concept (Monetary) As Of Credit ifrs-full:DepositsFromCustomers
42 Interbank deposits Concept (Monetary) As Of Credit ifrs-full:DepositsFromBanks
43 Repurchase agreements and other similar secured borrowing Concept (Monetary) As Of Credit ifrs-full:RepurchaseAgreementsAndCashCollateralOnSecuritiesLent
44 Liabilities relating to assets held for sale Concept (Monetary) As Of Credit ifrs-full:LiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale
45 Derivative financial instruments Concept (Monetary) As Of Credit ifrs-full:DerivativeFinancialLiabilities
46 Borrowings from other financial institutions Concept (Monetary) As Of Credit ifrs-full:Borrowings
47 Debt instruments in issue Concept (Monetary) As Of Credit ifrs-full:DebtSecurities
48 Preferred shares Concept (Monetary) As Of Credit cib:PreferredShares
49 Current tax Concept (Monetary) As Of Credit ifrs-full:CurrentTaxLiabilities
50 Deferred tax, net Concept (Monetary) As Of Credit ifrs-full:NetDeferredTaxLiabilities
51 Employees benefit plans Concept (Monetary) As Of Credit ifrs-full:RecognisedLiabilitiesDefinedBenefitPlan
52 Other liabilities Concept (Monetary) As Of Credit ifrs-full:OtherLiabilities
53 TOTAL LIABILITIES Concept (Monetary) As Of Credit ifrs-full:Liabilities
54 EQUITY Abstract ifrs-full:EquityAbstract
55 Share capital Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
56 Additional paid-in-capital Concept (Monetary) As Of Credit ifrs-full:AdditionalPaidinCapital
57 Appropriated reserves Concept (Monetary) As Of Credit ifrs-full:OtherReserves
58 Retained earnings Concept (Monetary) As Of Credit ifrs-full:RetainedEarnings
59 Net income attributable to equity holders of the Parent Company Concept (Monetary) As Of Credit cib:ProfitAndLossReserve
60 Accumulated other comprehensive income, net of tax Concept (Monetary) As Of Credit ifrs-full:AccumulatedOtherComprehensiveIncome
61 STOCKHOLDERS' EQUITY ATTRIBUTABLE TO THE OWNERS OF THE PARENT COMPANY Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
62 Non-controlling interest Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
63 TOTAL EQUITY Concept (Monetary) As Of Credit ifrs-full:Equity
64 TOTAL LIABILITIES AND EQUITY Concept (Monetary) As Of Credit ifrs-full:EquityAndLiabilities
65 1003 - Statement - CONSOLIDATED STATEMENT OF INCOME Network

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http://www.grupobancolombia.com/role/ConsolidatedStatementOfIncome
66 Implied Table Table

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implied:Table
67 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
68 Interest on loans and financial leases Abstract cib:InterestOnLoansAndFinancialLeasesAbstract
69 Commercial Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnLoansAndReceivables
70 Consumer Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnLoansAndAdvancesToCustomers
71 Small business loans Concept (Monetary) For Period Credit cib:InterestIncomeOnSmallBusinessLoans
72 Mortgage Concept (Monetary) For Period Credit cib:InterestOnMortgageLoans
73 Financial leases Concept (Monetary) For Period Credit ifrs-full:FinanceIncomeOnNetInvestmentInFinanceLease
74 Interest income on loans and financial leases Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnOtherFinancialAssets
75 Interest on debt instruments using the effective interest method Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnDebtInstrumentsHeld
76 Total Interest of debt instruments using the effective interest method Concept (Monetary) For Period Credit cib:InterestIncomeOnDebtInstrumentsUsingEffectiveInterestMethod
77 Interest income on overnight and market funds Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnCashAndCashEquivalents
78 Interest and valuation on financial instruments Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnHeldtomaturityInvestments
79 Total interest and valuation on financial instruments Concept (Monetary) For Period Credit ifrs-full:RevenueFromInterest
80 Interest expenses Concept (Monetary) For Period Debit ifrs-full:InterestExpense
81 Net interest margin and valuation on financial instruments before impairment on loans and financial leases and off balance sheet credit instruments Concept (Monetary) For Period Credit cib:NetInterestMarginAndValuationIncomeOnFinancialInstrumentsBeforeImpairmentOnLoansAndFinancialLeasesAndOffBalanceSheetCreditInstruments
82 Credit impairment charges on loans, advances and financial leases, net Concept (Monetary) For Period Debit cib:CreditImpairmentChargesOnLoansAndAdvancesAndFinancialLeasesNet
83 Credit recovery (impairment) for other financial instruments Concept (Monetary) For Period Debit cib:CreditImpairmentChargesOnOffBalanceSheetCreditInstruments
84 Total credit impairment charges, net Concept (Monetary) For Period Debit cib:TotalCreditImpairmentChargesNet
85 Net interest margin and valuation on financial instruments after impairment on loans and financial leases and off balance sheet credit instruments Concept (Monetary) For Period Credit ifrs-full:FinanceIncomeCost
86 Fees and commissions income Concept (Monetary) For Period Credit ifrs-full:FeeAndCommissionIncome
87 Fees and commissions expenses Concept (Monetary) For Period Debit ifrs-full:FeeAndCommissionExpense
88 Total fees and commissions, net Concept (Monetary) For Period Credit ifrs-full:FeeAndCommissionIncomeExpense
89 Other operating income Concept (Monetary) For Period Credit ifrs-full:MiscellaneousOtherOperatingIncome
90 Dividends received, and share of profits of equity method investees Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
91 Recovery (Impairment) charges on cash-generating unit Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossRecognisedInProfitOrLoss
92 Total operating income, net Concept (Monetary) For Period Credit ifrs-full:IncomeFromContinuingOperationsAttributableToOwnersOfParent
93 Operating expenses Abstract cib:OperatingExpenseAbstract
94 Salaries and employee benefits Concept (Monetary) For Period Debit ifrs-full:EmployeeBenefitsExpense
95 Other administrative and general expenses Concept (Monetary) For Period Debit ifrs-full:AdministrativeExpense
96 Wealth tax, contributions and other tax burden Concept (Monetary) For Period Debit ifrs-full:TaxExpenseOtherThanIncomeTaxExpense
97 Impairment, depreciation and amortization Concept (Monetary) For Period Debit ifrs-full:DepreciationAmortisationAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss
98 Other operating expenses Concept (Monetary) For Period Debit ifrs-full:OtherExpenseByNature
99 Total operating expenses Concept (Monetary) For Period Debit ifrs-full:OperatingExpense
100 Profit before tax Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
101 Income tax Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
102 Profit for the year from continued operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperations
103 Net income from discontinued operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromDiscontinuedOperations
104 Net income Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
105 Net income attributable to equity holders of the Parent Company Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOwnersOfParent
106 Non-controlling interest Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
107 Basic and Diluted earnings per share to common shareholders, stated in units of pesos Concept (Share) For Period ifrs-full:BasicAndDilutedEarningsLossPerShare
108 From continuing operations Concept (Share) For Period ifrs-full:BasicAndDilutedEarningsLossPerShareFromContinuingOperations
109 From discontinuing operations Concept (Share) For Period ifrs-full:BasicAndDilutedEarningsLossPerShareFromDiscontinuedOperations
110 1004 - Statement - CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME Network

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http://www.grupobancolombia.com/role/ConsolidatedStatementOfComprehensiveIncome
111 Implied Table Table

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implied:Table
112 Statement of comprehensive income [abstract] Abstract ifrs-full:StatementOfComprehensiveIncomeAbstract
113 Net income Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
114 Other comprehensive income/(loss) that will not be reclassified to net income Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTaxAbstract
115 Remeasurement income related to defined benefit liability Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
116 Income tax Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome
117 Net of tax amount Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
118 Gain on investments transferred to retained earnings upon disposal Concept (Monetary) For Period Credit cib:OtherComprehensiveIncomeBeforeTaxGainLossesOnInvestmentsTransferredToRetainedEarningsUponDisposal
119 Transfer within equity upon merger of equity investments Concept (Monetary) For Period Debit ifrs-full:AmountsRemovedFromEquityAndAdjustedAgainstFairValueOfFinancialAssetsOnReclassificationOutOfFairValueThroughOtherComprehensiveIncomeMeasurementCategoryBeforeTax
120 Unrealized gain Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax
121 Income tax Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
122 Net of tax amount Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
123 Total other comprehensive income that will not be reclassified to net income, net of tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax
124 Investments in debt instruments measured at fair value through other comprehensive income (FVTOCI) Abstract cib:DebtInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeAbstract
125 Gain on investments recycled to profit or loss upon disposal Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax
126 Unrealized gain Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxGainsLossesFromInvestmentsInEquityInstruments
127 Changes in loss allowance for credit losses Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseInAllowanceAccountForCreditLossesOfFinancialAssets
128 Income tax Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToAvailableforsaleFinancialAssetsOfOtherComprehensiveIncome
129 Net of tax amount Concept (Monetary) For Period Credit cib:OtherComprehensiveIncomeNetOfTaxInvestmentsInDebtInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncome
130 Foreign currency translation adjustments: Abstract cib:ForeignCurrencyTranslationAdjustmentsAbstract
131 Exchange differences arising on translating the foreign operations Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation
132 Gain/(loss) on net investment hedge in foreign operations Concept (Monetary) For Period Debit cib:ReclassificationAdjustmentsOnstatementOfIncomeOnAcquisitionOfForeignOperation
133 Income tax Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToHedgesOfNetInvestmentsInForeignOperationsOfOtherComprehensiveIncome
134 Net of tax amount Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxHedgesOfNetInvestmentsInForeignOperations
135 Net loss on cash flow hedges Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnCashFlowHedgesNetOfTax
136 Net of tax amount Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxCashFlowHedges
137 Unrealized gain/(loss) on investments in associates and joint ventures using equity method Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossBeforeTax
138 Income tax Concept (Monetary) For Period Debit cib:OtherComprehensiveIncomeOnInvestmentsInEquityMethodIncomeTax
139 Net of tax amount Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossNetOfTax
140 Total comprehensive income/(loss) that may be reclassified to net income, net of tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax
141 Comprehensive income/(loss), net of tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
142 Total comprehensive income attributable to: Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
143 Equity holders of the Parent Company Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToOwnersOfParent
144 Non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToNoncontrollingInterests
145 1005 - Statement - CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (Parenthetical) Network

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http://www.grupobancolombia.com/role/ConsolidatedStatementOfComprehensiveIncomeParenthetical
146 Statement [table] Table

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us-gaap:StatementTable
147 Type of event [Axis] Axis cib:TypeOfEventAxis
148 Type of event [Domain] Member cib:TypeOfEventDomain
149 Merger [Member] Member cib:MergerMember
150 Statement [line items] LineItems us-gaap:StatementLineItems
151 Amounts removed from equity and adjusted against fair value of financial assets on reclassification out of fair value through other comprehensive income measurement category, before tax Concept (Monetary) For Period Debit ifrs-full:AmountsRemovedFromEquityAndAdjustedAgainstFairValueOfFinancialAssetsOnReclassificationOutOfFairValueThroughOtherComprehensiveIncomeMeasurementCategoryBeforeTax
152 1006 - Statement - CONSOLIDATED STATEMENT OF CHANGES IN EQUITY Network

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http://www.grupobancolombia.com/role/ConsolidatedStatementOfChangesInEquity
153 Statement of changes in equity [table] Table

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ifrs-full:StatementOfChangesInEquityTable
154 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
155 Equity [Member] Member ifrs-full:EquityMember
156 Share Capital [Member] Member ifrs-full:IssuedCapitalMember
157 Additional Paid in capital [Member] Member ifrs-full:AdditionalPaidinCapitalMember
158 Appropiated Reserves [Member] Member ifrs-full:MiscellaneousOtherReservesMember
159 Translation adjustment [Member] Member ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember
160 Equity securities through OCI [Member] Member ifrs-full:ReserveOfGainsAndLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember
161 Cash flow Hedge Reserve [Member] Member ifrs-full:ReserveOfCashFlowHedgesMember
162 Associates [Member] Member ifrs-full:ReserveOfGainsAndLossesFromInvestmentsInEquityInstrumentsMember
163 Empolyee Benefits [Member] Member ifrs-full:ReserveOfRemeasurementsOfDefinedBenefitPlansMember
164 Retained earnings [Member] Member ifrs-full:RetainedEarningsMember
165 Attributable to owners of parent company [Member] Member ifrs-full:EquityAttributableToOwnersOfParentMember
166 Non-Controlling interest [Member] Member ifrs-full:NoncontrollingInterestsMember
167 Debt instruments at fair value though OCI [Member] Member cib:DebtInstrumentsAtFairValueThoughOCIMember
168 Net income [Member] Member cib:NetIncomeMember
169 Restatement Adjustments [Axis] Axis cib:RestatementAdjustmentsAxis
170 Restatement Adjustments [Domain] Member cib:RestatementAdjustmentsDomain
171 Adjusted [Member] Member cib:RestatementAdjustedMember
172 Statement of changes in equity [line items] LineItems ifrs-full:StatementOfChangesInEquityLineItems
173 Balance Concept (Monetary) As Of Credit ifrs-full:Equity
174 Effect of adoption of new accounting standards (Note 32 Impacts on application of new standards) Concept (Monetary) For Period Credit cib:CumulativeEffectOfChangesInEquityDueToChangeInAccountingPolicy
175 Transfer to profit from previous years Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughAppropriationOfRetainedEarnings
176 Dividend payment corresponding to 509,704,584 common shares and 452,122,416 preferred shares without voting rights, subscribed and paid Concept (Monetary) For Period Debit ifrs-full:DividendsRecognisedAsDistributionsToOwnersOfParent
177 Legal reserve movements Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTransferToStatutoryReserve
178 Release of reserves by law Concept (Monetary) For Period Debit cib:DecreaseThroughTransferFromStatutoryReserveEquity
179 Increase of reserves by law Concept (Monetary) For Period Credit cib:IncreaseThroughTransferToStatutoryReserveEquity
180 Disposal of debt/equity instruments Concept (Monetary) For Period Credit cib:DisposalOfDebtEquityInstruments
181 Subsidiaries' liquidation Concept (Monetary) For Period Credit cib:IncreasedecreaseThroughLiquidationOfSubsidiaryEquity
182 Sale of financial instruments Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTransferBetweenRevaluationReserveAndRetainedEarnings
183 Realization of retained earnings Concept (Monetary) For Period Credit cib:IncreaseDecreaseThroughRealizationOfRetainedEarningsEquity
184 Non-controlling interest Concept (Monetary) For Period Debit ifrs-full:DividendsRecognisedAsDistributionsToNoncontrollingInterests
185 Other reserves Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTransfersAndOtherChangesEquity
186 Changes in shareholdings subsidiaries Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl
187 Gains on investment written off Concept (Monetary) For Period Credit ifrs-full:CumulativeGainLossOnDisposalOfInvestmentsInEquityInstrumentsDesignatedAsMeasuredAtFairValueThroughOtherComprehensiveIncome
188 Net income Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
189 Other comprehensive income Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
190 Balance Concept (Monetary) As Of Credit ifrs-full:Equity
191 1007 - Statement - CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (Parenthetical) Network

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http://www.grupobancolombia.com/role/ConsolidatedStatementOfChangesInEquityParenthetical
192 Statement of changes in equity [table] Table

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ifrs-full:StatementOfChangesInEquityTable
193 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
194 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
195 Preference shares [member] Member ifrs-full:PreferenceSharesMember
196 Revaluation surplus [member] Member ifrs-full:RevaluationSurplusMember
197 Statement of changes in equity [line items] LineItems ifrs-full:StatementOfChangesInEquityLineItems
198 Number of shares outstanding Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
199 Dividends paid, ordinary shares per share Concept (Share) For Period ifrs-full:DividendsPaidOrdinarySharesPerShare
200 1008 - Statement - CONSOLIDATED STATEMENT OF CASH FLOW Network

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http://www.grupobancolombia.com/role/ConsolidatedStatementOfCashFlow
201 Implied Table Table

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implied:Table
202 Statement of Cash Flows [Abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
203 Net income Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
204 Adjustments to reconcile net income to net cash provided by operating activities: Abstract ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
205 Depreciation and amortization Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDepreciationAndAmortisationExpense
206 Equity method Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod
207 Deferred tax expense Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDeferredTaxExpense
208 Credit impairment charges on loans and advances and financial leases Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss
209 Credit impairment (recovery) charges on off balance sheet credit and other financial instruments Concept (Monetary) For Period Debit cib:AdjustmentsForAllowancesForCreditLossesOnOffBalanceSheetCreditInstruments
210 Gain on sales on assets held for sale and inventories Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment
211 Valuation gain on investment securities Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForGainsLossesOnFairValueAdjustmentInvestmentProperty
212 Gains on sale of loan portfolio Concept (Monetary) For Period Credit cib:LossesGainsOnSaleOfLoanPortfolio
213 Loss (Gain) upon disposal of investment in subsidiary Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates
214 Valuation (losses) on derivative financial instruments Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForGainsLossesOnChangeInFairValueOfDerivatives
215 Wealth tax Concept (Monetary) For Period Debit cib:AdjustmentsForWealthTaxExpense
216 Income tax Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncomeTaxExpense
217 Other non-cash ítems Concept (Monetary) For Period Debit ifrs-full:OtherAdjustmentsForNoncashItems
218 Net interest Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForInterestIncome
219 Change in operating assets and liabilities: Abstract cib:ChangeInOperatingAssetsAndLiabilitiesAbstract
220 (increase) Decrease in derivative financial instruments Concept (Monetary) For Period Debit cib:AdjustmentsForIncreaseDecreaseInDerivatives
221 (increase) Decrease in accounts receivable Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable
222 Increase in loans and advances to customers Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInLoansAndAdvancesToCustomers
223 Increase in other assets Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInOtherAssets
224 (Decrease) increase in accounts payable Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInTradeAccountPayable
225 Increase in other liabilities Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInOtherLiabilities
226 Increase in deposits by customers Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInDepositsFromCustomers
227 Decrease in estimated liabilities and provisions Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInOtherCurrentLiabilities
228 Net changes in investment securities recognized at fair value through profit or loss Concept (Monetary) For Period Debit cib:AdjustmentsForIncreaseDecreaseInInvestmentSecuritiesRecognizedAtFairValueThroughProfitOrLoss
229 Proceeds from sales of assets held for sale Concept (Monetary) For Period Debit cib:ProceedsFromSalesOfAssetsHeldForSale
230 Proceed from sale of loan porfolio Concept (Monetary) For Period Credit cib:ProceedsFromSaleOfLoanPorfolio
231 Wealth tax paid Concept (Monetary) For Period Credit cib:WealthTaxesPaidClassifiedAsOperatingActivities
232 Income tax paid Concept (Monetary) For Period Credit ifrs-full:IncomeTaxesPaidClassifiedAsOperatingActivities
233 Dividend received Concept (Monetary) For Period Debit ifrs-full:DividendsReceivedClassifiedAsOperatingActivities
234 Interest received Concept (Monetary) For Period Debit ifrs-full:InterestReceivedClassifiedAsOperatingActivities
235 Interest paid Concept (Monetary) For Period Credit ifrs-full:InterestPaidClassifiedAsOperatingActivities
236 Net cash provided by operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
237 Cash flows from investment activities: Abstract ifrs-full:CashFlowsFromUsedInInvestingActivitiesAbstract
238 Purchases of debt instruments at amortized cost Concept (Monetary) For Period Credit cib:PurchasesOfDebtSecuritiesAtAmortizedCost
239 Proceeds from maturities of debt instruments at amortized cost Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOrMaturityOfFinancialInstrumentsClassifiedAsInvestingActivities
240 Purchases of debt instruments at fair value through OCI (2017: debt instruments at amortized cost and fair value through profit or loss) Concept (Monetary) For Period Credit cib:PurchaseOfDebtSecuritiesAtFairValueThroughOtherComprehensiveIncome
241 Proceeds from debt instruments at fair value through OCI (2017: debt instruments at amortized cost and fair value through profit or loss) Concept (Monetary) For Period Debit cib:ProceedsFromSalesOrMaturityOfDebtSecuritiesAtFairValueThroughOtherComprehensiveIncome
242 Purchases of equity instruments and interests in associates and joint ventures Concept (Monetary) For Period Credit ifrs-full:OtherCashPaymentsToAcquireInterestsInJointVenturesClassifiedAsInvestingActivities
243 Proceeds from equity instruments and interests in associates and joint ventures Concept (Monetary) For Period Debit ifrs-full:OtherCashReceiptsFromSalesOfInterestsInJointVenturesClassifiedAsInvestingActivities
244 Restitution of associates' capital contributions Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfInterestsInAssociates
245 Purchases of premises and equipment and investment properties Concept (Monetary) For Period Credit ifrs-full:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
246 Proceeds from sales of premises and equipment and investment properties Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
247 Net cash outflow from sales of investments in subsidiaries Concept (Monetary) For Period Credit ifrs-full:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
248 Net cash outflow (inflow) from liquidation of investments in subsidiaries Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
249 Purchase of other long-term assets Concept (Monetary) For Period Credit ifrs-full:PurchaseOfOtherLongtermAssetsClassifiedAsInvestingActivities
250 Net cash (used in) provided by investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
251 Cash flows from financing activities: Abstract ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract
252 (Decrease) Increase in repurchase agreements and other similar secured borrowing Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInIncreaseDecreaseInCurrentBorrowings
253 Proceeds from borrowings from other financial institutions Concept (Monetary) For Period Debit ifrs-full:ProceedsFromBorrowingsClassifiedAsFinancingActivities
254 Repayment of borrowings from other financial institutions Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfBorrowingsClassifiedAsFinancingActivities
255 Placement of debt instruments in issue Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssueOfBondsNotesAndDebentures
256 Payment of debt instruments in issue Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfBondsNotesAndDebentures
257 Dividends paid Concept (Monetary) For Period Credit ifrs-full:DividendsPaidClassifiedAsFinancingActivities
258 Transactions with non-controlling interests Concept (Monetary) For Period Debit ifrs-full:ProceedsFromContributionsOfNoncontrollingInterests
259 Net cash used in financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
260 Effect of exchange rate changes on cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
261 (Decrease) increase in cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
262 Cash and cash equivalents at beginning of year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
263 Cash and cash equivalents at end of year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
264 1009 - Statement - CONSOLIDATED STATEMENT OF CASH FLOW (Parenthetical) Network

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265 Statement of cash flows [table] Table

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266 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
267 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
268 Compania de Financiamiento Tuya Sa [member] Member cib:CompaniaDeFinanciamientoTuyaSaMember
269 Leasing Peru S.A. [Member] Member cib:LeasingPeruSaMember
270 Fondo de Inversion en Arrendamiento Operativo Renting Peru [Member] Member cib:FondoDeInversionEnArrendamientoOperativoRentingPeruMember
271 Bancolombia S A [Member] Member cib:BancolombiaSMember
272 Statement of cash flows [line items] LineItems cib:StatementOfCashFlowsLineItems
273 Cash flows from losing control of subsidiaries or other businesses, classified as investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
274 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
275 Transfer of loans and goods to foreclosed assets and inventories Concept (Monetary) For Period Debit cib:TransferOfLoansAndGoodsToForeclosedAssetsAndInventories
276 Cash and cash equivalents in subsidiary or businesses acquired or disposed Concept (Monetary) For Period Debit ifrs-full:CashAndCashEquivalentsInSubsidiaryOrBusinessesAcquiredOrDisposed2013
277 Payments for debt issue costs Concept (Monetary) For Period Credit ifrs-full:PaymentsForDebtIssueCosts
278 1010 - Disclosure - REPORTING ENTITY Network

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279 Implied Table Table

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280 Disclosure of reporting entity [Abstract] Abstract cib:DisclosureOfReportingEntityAbstract
281 Disclosure of reporting entity [text block] Concept (Text Block (HTML)) For Period cib:DisclosureOfReportingEntityTextBlock
282 1011 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES Network

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283 Implied Table Table

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284 Disclosure of Significant Accounting Policies [Abstract] Abstract cib:DisclosureOfSignificantAccountingPoliciesAbstract
285 Disclosure of significant accounting policies [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSummaryOfSignificantAccountingPoliciesExplanatory
286 1012 - Disclosure - OPERATING SEGMENTS Network

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287 Implied Table Table

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288 Disclosure Of Operating Segment [Abstract] Abstract cib:DisclosureOfOperatingSegmentAbstract
289 Disclosure of operating segments [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOperatingSegmentsExplanatory
290 1013 - Disclosure - CASH AND CASH EQUIVALENTS Network

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291 Implied Table Table

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292 Disclosure of cash and cash equivalents [Abstract] Abstract cib:DisclosureOfCashAndCashEquivalentsAbstract
293 Disclosure of restricted cash and cash equivalents [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRestrictedCashAndCashEquivalentsExplanatory
294 1014 - Disclosure - FINANCIAL ASSETS INVESTMENTS AND DERIVATIVES Network

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295 Implied Table Table

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296 Disclosure of financial assets investments and derivatives [Abstract] Abstract cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesAbstract
297 Disclosure of financial instruments [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialInstrumentsExplanatory
298 1015 - Disclosure - LOANS AND ADVANCES TO CUSTOMERS AND FINANCIAL INSTITUTIONS, NET Network

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299 Implied Table Table

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300 Disclosure Of Loans And Advances To Customers Explanatory [Abstract] Abstract cib:DisclosureOfLoansAndAdvancesToCustomersExplanatoryAbstract
301 Disclosure of loans and advances to customers [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfLoansAndAdvancesToCustomersExplanatory
302 1016 - Disclosure - INVESTMENTS IN ASSOCIATES AND JOINT VENTURES Network

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303 Implied Table Table

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304 Disclosure Of Interests In Other Entities Explanatory [Abstract] Abstract cib:DisclosureOfInterestsInOtherEntitiesExplanatoryAbstract
305 Disclosure of interests in other entities [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestsInOtherEntitiesExplanatory
306 1017 - Disclosure - GOODWILL AND INTANGIBLE ASSETS, NET Network

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307 Implied Table Table

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308 Disclosure of detailed information about intangible assets [abstract] Abstract ifrs-full:DisclosureOfIntangibleAssetsAbstract
309 Disclosure of intangible assets and goodwill [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIntangibleAssetsAndGoodwillExplanatory
310 1018 - Disclosure - PREMISES AND EQUIPMENT, NET Network

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311 Implied Table Table

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312 Disclosure of detailed information about property, plant and equipment [abstract] Abstract ifrs-full:DisclosureOfPropertyPlantAndEquipmentAbstract
313 Disclosure of property, plant and equipment [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory
314 1019 - Disclosure - INVESTMENT PROPERTIES Network

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315 Implied Table Table

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316 Disclosure of detailed information about investment property [abstract] Abstract ifrs-full:DisclosureOfInvestmentPropertyAbstract
317 Disclosure of investment property [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInvestmentPropertyExplanatory
318 1020 - Disclosure - INCOME TAX Network

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319 Implied Table Table

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320 Disclosure Of Income Tax [Abstract] Abstract cib:DisclosureOfIncomeTaxAbstract
321 Disclosure of income tax [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIncomeTaxExplanatory
322 1021 - Disclosure - ASSETS HELD FOR SALE AND INVENTORIES, NET Network

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323 Implied Table Table

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324 Disclosure of Assets Held For Sale And Inventories [Abstract] Abstract cib:DisclosureOfAssetsHeldForSaleAndInventoriesAbstract
325 ASSETS HELD FOR SALE AND INVENTORIES, NET [Text Block] Concept (Text Block (HTML)) For Period cib:AssetsHeldForSaleAndInTextBlock
326 1022 - Disclosure - OTHER ASSETS, NET Network

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327 Implied Table Table

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328 Disclosure Of Other Assets [Abstract] Abstract cib:DisclosureOfOtherAssetsAbstract
329 Disclosure Of Other Assets Explanatorys [text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfOtherAssetsExplanatorysTextBlock
330 1023 - Disclosure - DEPOSITS FROM CUSTOMERS Network

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331 Implied Table Table

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332 Disclosure Of Deposits From Customers [Abstract] Abstract cib:DisclosureOfDepositsFromCustomersAbstract
333 Disclosure of deposits from customers [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDepositsFromCustomersExplanatory
334 1024 - Disclosure - INTERBANK DEPOSITS AND REPURCHASE AGREEMENTS AND OTHER SIMILAR SECURED BORROWING Network

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335 Implied Table Table

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336 Disclosure of interbank deposits and repurchase agreements and other similar secured borrowing [Abstract] Abstract cib:DisclosureOfInterbankDepositsAndRepurchaseAgreementsAndOtherSimilarSecuredBorrowingAbstract
337 Disclosure of interbank deposits and repurchase agreements and other similar secured borrowing [text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfInterbankDepositsAndRepurchaseAgreementsAndOtherSimilarSecuredBorrowingTextBlock
338 1025 - Disclosure - BORROWINGS FROM OTHER FINANCIAL INSTITUTIONS Network

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339 Implied Table Table

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340 Disclosure Of Borrowings Explanatory [Abstract] Abstract cib:DisclosureOfBorrowingsExplanatoryAbstract
341 Disclosure of borrowings [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBorrowingsExplanatory
342 1026 - Disclosure - DEBT INSTRUMENTS IN ISSUE Network

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343 Implied Table Table

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344 Disclosure of debt securities in issue [Abstract] Abstract cib:DisclosureOfDebtSecuritiesInIssueAbstract
345 Disclosure of debt instruments [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDebtSecuritiesExplanatory
346 1027 - Disclosure - EMPLOYEE BENEFIT PLANS Network

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http://www.grupobancolombia.com/role/EmployeeBenefitPlans
347 Implied Table Table

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348 Disclosure of employee benefit plans [Abstract] Abstract cib:DisclosureOfEmployeeBenefitPlansAbstract
349 Disclosure of employee benefits [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEmployeeBenefitsExplanatory
350 1028 - Disclosure - OTHER LIABILITIES Network

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351 Implied Table Table

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352 Disclosure Of Other Liabilities Explanatory [Abstract] Abstract cib:DisclosureOfOtherLiabilitiesExplanatoryAbstract
353 Disclosure Of Other Liabilities Explanatory [text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfOtherLiabilitiesExplanatoryTextBlock
354 1029 - Disclosure - PROVISIONS AND CONTINGENT LIABILITIES Network

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http://www.grupobancolombia.com/role/ProvisionsAndContingentLiabilities
355 Implied Table Table

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356 Disclosure Of Provisions And Contingent Liabilities [Abstract] Abstract cib:DisclosureOfProvisionsAndContingentLiabilitiesAbstract
357 Disclosure of other provisions, contingent liabilities and contingent assets [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatory
358 1030 - Disclosure - CAPITAL Network

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359 Implied Table Table

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360 Disclosure Of Capital [Abstract] Abstract cib:DisclosureOfCapitalAbstract
361 Disclosure of classes of share capital [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfClassesOfShareCapitalExplanatory
362 1031 - Disclosure - APPROPRIATED RESERVES Network

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363 Implied Table Table

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364 Disclosure Of Appropriated Reserves [Abstract] Abstract cib:DisclosureOfAppropriatedReservesAbstract
365 Disclosure Of Reserves And Other Equity Interest Explanatorys [text block] Concept (Text Block (HTML)) For Period cib:DisclosureOfReservesAndOtherEquityInterestExplanatorysTextBlock
366 1032 - Disclosure - UNCONSOLIDATED STRUCTURED ENTITIES Network

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367 Implied Table Table

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368 Disclosure of unconsolidated structured entities [abstract] Abstract ifrs-full:DisclosureOfUnconsolidatedStructuredEntitiesAbstract
369 Disclosure of unconsolidated structured entities [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfUnconsolidatedStructuredEntitiesExplanatory
370 1033 - Disclosure - OPERATING INCOME Network

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371 Implied Table Table

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372 Disclosure of operating income and operating expense [Abstract] Abstract cib:DisclosureOfOperatingIncomeAndOperatingExpenseAbstract
373 Disclosure of other operating income (expense) [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherOperatingIncomeExpenseExplanatory
374 1034 - Disclosure - OPERATING EXPENSES Network

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375 Implied Table Table

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376 Disclosure of operating expenses [Abstract] Abstract cib:DisclosureOfOperatingExpensesAbstract
377 Disclosure of general and administrative expense [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfGeneralAndAdministrativeExpenseExplanatory
378 1035 - Disclosure - EARNING PER SHARE ('EPS') Network

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379 Implied Table Table

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380 Disclosure of earnings per share [Abstract] Abstract cib:DisclosureOfEarningsPerShareAbstract
381 Earnings per share [text block] Concept (Text Block (HTML)) For Period ifrs-full:EarningsPerShareExplanatory
382 1036 - Disclosure - RELATED PARTY TRANSACTIONS Network

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383 Implied Table Table

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384 Disclosure of related party transactions [Abstract] Abstract cib:DisclosureOfRelatedPartyTransactionsAbstract
385 Disclosure of related party [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRelatedPartyExplanatory
386 1037 - Disclosure - LIABILITIES FROM FINANCING ACTIVITIES Network

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http://www.grupobancolombia.com/role/LiabilitiesFromFinancingActivities
387 Implied Table Table

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388 Disclosure of liabilities from financing activities [Abstract] Abstract cib:DisclosureOfLiabilitiesFromFinancingActivitiesAbstract
389 Disclosure of information that enables users of financial statements to evaluate changes in liabilities arising from financing activities [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInformationThatEnablesUsersOfFinancialStatementsToEvaluateChangesInLiabilitiesArisingFromFinancingActivitiesExplanatory
390 1038 - Disclosure - FAIR VALUE OF ASSETS AND LIABILITIES Network

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391 Implied Table Table

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392 Disclosure of fair value of assets and liabilities [Abstract] Abstract cib:DisclosureOfFairValueOfAssetsAndLiabilitiesAbstract
393 Disclosure of fair value measurement [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueMeasurementExplanatory
394 1039 - Disclosure - DISCONTINUED OPERATIONS Network

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395 Implied Table Table

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396 Disclosure of discontinued operations [Abstract] Abstract cib:DisclosureOfDiscontinuedOperationsAbstract
397 Disclosure of discontinued operations [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDiscontinuedOperationsExplanatory
398 1040 - Disclosure - RISK MANAGEMENT Network

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399 Implied Table Table

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400 Disclosure Of Risk Management [Abstract] Abstract cib:DisclosureOfRiskManagementAbstract
401 Disclosure Of Risk Management [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfRiskManagementTextBlock
402 1041 - Disclosure - IMPACTS ON APPLICATION OF NEW STANDARDS Network

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403 Implied Table Table

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404 Disclosure of expected impact of initial application of new standards or interpretations [abstract] Abstract ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretationsAbstract
405 Disclosure of expected impact of initial application of new standards or interpretations [text block] Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations
406 1042 - Disclosure - SUBSEQUENT EVENTS Network

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407 Implied Table Table

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408 Disclosure of subsequent events [Abstract] Abstract cib:DisclosureOfSubsequentEventsAbstract
409 Disclosure of events after reporting period [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEventsAfterReportingPeriodExplanatory
410 1043 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Policies) Network

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411 Implied Table Table

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412 Disclosure of Significant Accounting Policies [Abstract] Abstract cib:DisclosureOfSignificantAccountingPoliciesAbstract
413 Basis for preparation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory
414 Presentation of financial statements Concept (Text Block (HTML)) For Period cib:DescriptionOfAccountingPolicyForPresentationOfFinancialStatementsTextBlock
415 Consolidation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBasisOfConsolidationExplanatory
416 Functional and presentation currency Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFunctionalCurrencyExplanatory
417 Transactions and balances in foreign currency Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory
418 Foreign subsidiaries Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSubsidiariesExplanatory
419 Cash and cash equivalents Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents
420 Security deposits. Concept (Text Block (HTML)) For Period cib:DescriptionOfAccountingPolicyForSecurityDepositsTextBlock
421 Business combinations and goodwill Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForBusinessCombinationsAndGoodwillExplanatory
422 Financial instruments Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory
423 Financial assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinancialAssetsExplanatory
424 Financial liabilities Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory
425 Derecognition of financial assets and liabilities Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForDerecognitionOfFinancialInstrumentsExplanatory
426 Derivatives financial instruments Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsExplanatory
427 Premises and equipment Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory
428 Investment properties Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForInvestmentPropertyExplanatory
429 Intangible assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIntangibleAssetsOtherThanGoodwillExplanatory
430 Inventories Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForMeasuringInventories
431 Assets held for sale and discontinued operations Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleExplanatory
432 Impairment of non-financial assets, cash-generating units and goodwill Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory
433 Other assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherAssetsExplanatory
434 Employee benefits Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory
435 Provisions, contingent liabilities and contingent assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForContingentLiabilitiesAndContingentAssetsExplanatory
436 Customer loyalty program Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForCustomerLoyaltyProgrammesExplanatory
437 Revenue recognition Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForRecognitionOfRevenue
438 Income tax Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIncomeTaxExplanatory
439 Earnings per share Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEarningsPerShareExplanatory
440 Paid-in capital Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIssuedCapitalExplanatory
441 Use of estimates and judgments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAccountingJudgementsAndEstimatesExplanatory
442 Recently Issued Accounting Pronouncements Concept (Text Block (HTML)) For Period cib:DescriptionOfAccountingPolicyForRecentlyIssuedAccountingPronouncementsTextBlock
443 1044 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Tables) Network

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444 Disclosure of Significant Accounting Policies [Table] Table

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445 Unconsolidated structured entities [axis] Axis ifrs-full:UnconsolidatedStructuredEntitiesAxis
446 Entity's total for unconsolidated structured entities [member] Member ifrs-full:EntitysTotalForUnconsolidatedStructuredEntitiesMember
447 FCP Fondo Colombia Inmobiliario S.A. [Member] Member cib:FcpFondoColombiaInmobiliarioSaMember
448 Agromercantil Holding [Member] Member cib:AgromercantilHoldingMember
449 Disclosure of Significant Accounting Policies [Line Items] LineItems cib:DisclosureOfSignificantAccountingPoliciesLineItems
450 Disclosure Of Basis Of Consolidation Explanatorys [text block] Concept (Text Block (HTML)) For Period cib:DisclosureOfBasisOfConsolidationExplanatorysTextBlock
451 Disclosure of detailed information about the consolidated funds [text block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutConsolidatedFundsTextBlock
452 Disclosure of non-controlling interests [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNoncontrollingInterestsExplanatory
453 Disclosure of effect of changes in foreign exchange rates [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEffectOfChangesInForeignExchangeRatesExplanatory
454 Disclosure of detailed information about the degree of credit risk in three different phases Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutTheDegreeOfCreditRiskInThreeDifferentPhases
455 Disclosure of detailed information about the credit loss measurement and participation of loan and receivables text block Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutTheCreditLossMeasurementAndParticipationOfLoanAndReceivablesTextBlock
456 Disclosure of detailed information about the projections of macroeconomic variables [Table Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutTheProjectionsOfMacroeconomicVariablesTableTextBlock
457 Disclosure of detailed information about the determination of significant increase in risk using external credit rating text block [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutTheDeterminationOfSignificantIncreaseInRiskUsingExternalCreditRatingtextBlockTextBlock
458 Loans receivable, delinquency conditions [text block] Concept (Text Block (HTML)) For Period cib:LoansReceivableDelinquencyConditionsTextBlock
459 Disclosure of detailed information about useful lives of property plant and equipment [text block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutUsefulLivesOfPropertyPlantAndEquipmentExplanatoryTextBlock
460 1045 - Disclosure - OPERATING SEGMENTS (Tables) Network

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461 Implied Table Table

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462 Disclosure Of Operating Segment [Abstract] Abstract cib:DisclosureOfOperatingSegmentAbstract
463 Disclosure of entity's operating segments [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory
464 Disclosure of detailed information about total assets and liabilities [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutTotalAssetsAndLiabilitiesTextBlock
465 Disclosure of detailed information about investments in associates and joint venture [text block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutInvestmentsInAssociatesAndJointVentureTextBlock
466 Disclosure of detailed information about material non-cash items [text block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutMaterialNoncashItemsTextBlock
467 Disclosure of detailed information about Bank's total interest and valuation [text block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutBanksTotalInterestAndValuationTextBlock
468 1046 - Disclosure - CASH AND CASH EQUIVALENTS (Tables) Network

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469 Implied Table Table

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470 Disclosure of cash and cash equivalents [Abstract] Abstract cib:DisclosureOfCashAndCashEquivalentsAbstract
471 Disclosure of detailed information about statement of cash flow and statement of financial position [text block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutStatementOfCashFlowAndStatementOfFinancialPositionTextBlock
472 1047 - Disclosure - FINANCIAL ASSETS INVESTMENTS AND DERIVATIVES (Tables) Network

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http://www.grupobancolombia.com/role/FinancialAssetsInvestmentsAndDerivativesTables
473 Disclosure of financial assets investments and derivatives [Table] Table

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cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesTable
474 Types of hedges [axis] Axis ifrs-full:TypesOfHedgesAxis
475 Hedges [member] Member ifrs-full:TypesOfHedgesMember
476 Disclosure of financial assets investments and derivatives [Line Items] LineItems cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesLineItems
477 Disclosure Of Debt Securities Text Block [Table Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDebtSecuritiesTextBlockTableTextBlock
478 Disclosure Of Financial Assets Explanatory [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfFinancialAssetsExplanatoryTextBlock
479 Disclosure of detailed information about debt securities portfolio [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutDebtSecuritiesPortfolioTextBlock
480 Disclosure of detailed information about fair value of equity securities [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutFairValueOfEquitySecuritiesTextBlock
481 Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueOfEachInvestmentInEquityInstrumentsDesignatedAsMeasuredAtFairValueThroughOtherComprehensiveIncomeExplanatory
482 Disclosure of detailed information about securities pledged [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutSecuritiesPledgedTextBlock
483 Disclosure and Details About Breakdown Of The Changes In The Gross Carrying Amount Of The Debt Securities At Fair Value Through Other Comprehensive Income And Amortized Cost [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureAndDetailsAboutBreakdownOfTheChangesInTheGrossCarryingAmountOfTheDebtSecuritiesAtFairValueThroughOtherComprehensiveIncomeAndAmortizedCostTextBlock
484 Disclosure and Details About Provisions Detail Using The Expected Credit Losses Model [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureAndDetailsAboutProvisionsDetailUsingTheExpectedCreditLossesModelTextBlock
485 Disclosure And Details About Changes In The Allowance For Debt Instruments Measured At Amortized Cost And Fair Value Through Other Comprehensive Income [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureAndDetailsAboutChangesInTheAllowanceForDebtInstrumentsMeasuredAtAmortizedCostAndFairValueThroughOtherComprehensiveIncomeTextBlock
486 Disclosure of detailed information about bank's derivatives by type of risk [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutBanksDerivativesByTypeOfRiskTextBlock
487 Disclosure of derivative financial instruments [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDerivativeFinancialInstrumentsExplanatory
488 Disclosure of detailed information about contractual life of derivative [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutContractualLifeOfDerivativeTextBlock
489 Disclosure Of Collaterals Explanatorys [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfCollateralsExplanatorysTextBlock
490 Disclosure of detailed information about hedged item explanatory [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutHedgedItemExplanatoryTextBlock
491 Disclosure of offsetting of financial assets and financial liabilities [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOffsettingOfFinancialAssetsAndFinancialLiabilitiesExplanatory
492 Disclosure of detailed information about hedged items [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutHedgedItemsExplanatory
493 Disclosure Of Detailed Information About Amounts That Affected Statement Of Comprehensive Income As Result Of Hedge Accounting Explanatory [Table Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutAmountsThatAffectedStatementOfComprehensiveIncomeAsResultOfHedgeAccountingExplanatoryTableTextBlock
494 1048 - Disclosure - LOANS AND ADVANCES TO CUSTOMERS AND FINANCIAL INSTITUTIONS, NET (Tables) Network

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http://www.grupobancolombia.com/role/LoansAndAdvancesToCustomersAndFinancialInstitutionsNetTables
495 Implied Table Table

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implied:Table
496 Disclosure Of Loans And Advances To Customers Explanatory [Abstract] Abstract cib:DisclosureOfLoansAndAdvancesToCustomersExplanatoryAbstract
497 Disclosure of loans and advances to banks [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfLoansAndAdvancesToBanksExplanatory
498 Disclosure of allowance for credit losses [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAllowanceForCreditLossesExplanatory
499 Disclosure of finance lease and operating lease by lessor [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLessorExplanatory
500 Disclosure of detailed information about unsecured residual values by type of asset explanatory [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutUnsecuredResidualValuesByTypeOfAssetExplanatoryTextBlock
501 Disclosure of maturity analysis of operating lease payments [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfMaturityAnalysisOfOperatingLeasePaymentsExplanatory
502 Disclosure And Details About Significant Changes In The Provisions With The Expected Credit Loss Model According To IFRS 9 Text Block [Table Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureAndDetailsAboutSignificantChangesInTheProvisionsWithTheExpectedCreditLossModelAccordingToIFRS9TextBlockTableTextBlock
503 Disclosure of detailed information about breakdown of loans to financial institutions [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutBreakdownOfLoansToFinancialInstitutionsTextBlock
504 1049 - Disclosure - INVESTMENTS IN ASSOCIATES AND JOINT VENTURES (Tables) Network

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http://www.grupobancolombia.com/role/InvestmentsInAssociatesAndJointVenturesTables
505 Implied Table Table

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implied:Table
506 Disclosure Of Interests In Other Entities Explanatory [Abstract] Abstract cib:DisclosureOfInterestsInOtherEntitiesExplanatoryAbstract
507 Disclosure of detailed information of investment In associates and joint ventures [text block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationOfInvestmentInAssociatesAndJointVenturesTextBlock
508 Disclosure of interests in associates [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestsInAssociatesExplanatory
509 Disclosure of associates [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesExplanatory
510 Disclosure of interests in joint arrangements [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestsInJointArrangementsExplanatory
511 Disclosure of joint ventures [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfJointVenturesExplanatory
512 1050 - Disclosure - GOODWILL AND INTANGIBLE ASSETS, NET (Tables) Network

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http://www.grupobancolombia.com/role/GoodwillAndIntangibleAssetsNetTables
513 Implied Table Table

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implied:Table
514 Disclosure of detailed information about intangible assets [abstract] Abstract ifrs-full:DisclosureOfIntangibleAssetsAbstract
515 Disclosure Of Detailed Information Of Intangible Assets And Goodwill [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationOfIntangibleAssetsAndGoodwillTextBlock
516 Disclosure of detailed information about intangible assets [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory
517 Disclosure of reconciliation of changes in goodwill [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillExplanatory
518 Disclosure of information for cash-generating units [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesExplanatory
519 Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitExplanatory
520 1051 - Disclosure - PREMISES AND EQUIPMENT, NET (Tables) Network

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http://www.grupobancolombia.com/role/PremisesAndEquipmentNetTables
521 Implied Table Table

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implied:Table
522 Disclosure of detailed information about property, plant and equipment [abstract] Abstract ifrs-full:DisclosureOfPropertyPlantAndEquipmentAbstract
523 Disclosure of detailed information about property, plant and equipment [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory
524 1052 - Disclosure - INVESTMENT PROPERTIES (Tables) Network

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http://www.grupobancolombia.com/role/InvestmentPropertiesTables
525 Implied Table Table

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implied:Table
526 Disclosure of detailed information about investment property [abstract] Abstract ifrs-full:DisclosureOfInvestmentPropertyAbstract
527 Disclosure of significant adjustments to valuation obtained [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSignificantAdjustmentsToValuationObtainedExplanatory
528 Disclosure of detailed information about investment property [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutInvestmentPropertyExplanatory
529 Rental income from investment property, net of direct operating expense [Text Block] Concept (Text Block (HTML)) For Period cib:RentalIncomeFromInvestmentPropertyNetOfDirectOperatingExpenseTextBlock
530 1053 - Disclosure - INCOME TAX (Tables) Network

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http://www.grupobancolombia.com/role/IncomeTaxTables
531 Implied Table Table

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implied:Table
532 Disclosure Of Income Tax [Abstract] Abstract cib:DisclosureOfIncomeTaxAbstract
533 Disclosure Of Detailed Information About Income tax components recognized in income statement [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutIncomeTaxComponentsRecognizedInIncomeStatementTextBlock
534 Disclosure Of Detailed Information About Income Tax Components Recognized In Other Comprehensive Income [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutIncomeTaxComponentSrecognizedInOtherComprehensiveIncomeTextBlock
535 Disclosure Of Detailed Information about Applicable Tax Rates [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutApplicableTaxRatesTextBlock
536 Disclosure of temporary difference, unused tax losses and unused tax credits [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatory
537 Disclosure of deferred taxes [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDeferredTaxesExplanatory
538 Reconciliation of accounting profit multiplied by applicable tax rates [Text Block] Concept (Text Block (HTML)) For Period cib:ReconciliationOfAccountingProfitMultipliedByApplicableTaxRatesTextBlock
539 Disclosure of Detailed Information about Reconcialation on Contingent Tax Liabilities [Table Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutReconcialationOnContingentTaxLiabilitiesTableTextBlock
540 Disclosure Of Detailed Information About Tax Credit Carry forwards [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutTaxCreditCarryForwardsTextBlock
541 Disclosure of Detailed Information About Rate of income and supplementary taxes [Table Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutRateOfIncomeAndSupplementaryTaxesTableTextBlock
542 1054 - Disclosure - ASSETS HELD FOR SALE AND INVENTORIES, NET (Tables) Network

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http://www.grupobancolombia.com/role/AssetsHeldForSaleAndInventoriesNetTables
543 Implied Table Table

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implied:Table
544 Disclosure of Assets Held For Sale And Inventories [Abstract] Abstract cib:DisclosureOfAssetsHeldForSaleAndInventoriesAbstract
545 Disclosure of Assets Held For Sale And Inventories [text block] Concept (Text Block (HTML)) For Period cib:DisclosureOfAssetsHeldForSaleAndInventoriesTextBlock
546 Disclosure of inventories [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInventoriesExplanatory
547 Disclosure of Assets Held For Sale By Operating Segment [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfAssetsHeldForSaleByOperatingSegmentTextBlock
548 Disclosure of detailed information about assets and liabilities classified as held for sale [Table Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutAssetsAndLiabilitiesClssifiedAsHeldForSaleTableTextBlock
549 1055 - Disclosure - OTHER ASSETS, NET (Tables) Network

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http://www.grupobancolombia.com/role/OtherAssetsNetTables
550 Implied Table Table

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implied:Table
551 Disclosure Of Other Assets [Abstract] Abstract cib:DisclosureOfOtherAssetsAbstract
552 Disclosure of detailed information about other assets [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutOtherAssetsTextBlock
553 1056 - Disclosure - DEPOSITS FROM CUSTOMERS (Tables) Network

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http://www.grupobancolombia.com/role/DepositsFromCustomersTables
554 Implied Table Table

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implied:Table
555 Disclosure Of Deposits From Customers [Abstract] Abstract cib:DisclosureOfDepositsFromCustomersAbstract
556 Disclosure of detailed information about deposits [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutDepositsTextBlock
557 Disclosure of deposits from banks [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDepositsFromBanksExplanatory
558 Disclosure of detailed information about maturity period of CDT's issued by the bank [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutMaturityPeriodOfCdtsIssuedByBankTextBlock
559 1057 - Disclosure - INTERBANK DEPOSITS AND REPURCHASE AGREEMENTS AND OTHER SIMILAR SECURED BORROWING (Tables) Network

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http://www.grupobancolombia.com/role/InterbankDepositsAndRepurchaseAgreementsAndOtherSimilarSecuredBorrowingTables
560 Implied Table Table

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implied:Table
561 Disclosure of interbank deposits and repurchase agreements and other similar secured borrowing [Abstract] Abstract cib:DisclosureOfInterbankDepositsAndRepurchaseAgreementsAndOtherSimilarSecuredBorrowingAbstract
562 Disclosure of detailed information about money market operations recognized as liabilities [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutMoneyMarketOperationsRecognizedAsLiabilitiesTextBlock
563 Disclosure of detailed information about repurchases and resale transactions [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutRepurchasesAndResaleTransactionsTextBlock
564 1058 - Disclosure - BORROWINGS FROM OTHER FINANCIAL INSTITUTIONS (Tables) Network

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http://www.grupobancolombia.com/role/BorrowingsFromOtherFinancialInstitutionsTables
565 Implied Table Table

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implied:Table
566 Disclosure Of Borrowings Explanatory [Abstract] Abstract cib:DisclosureOfBorrowingsExplanatoryAbstract
567 Disclosure of detailed information about borrowings [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory
568 Disclosure of detailed information about Obligations granted by domestic banks [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutObligationsGrantedByDomesticBanksTextBlock
569 Disclosure of detailed information about maturities of financial obligations with domestic banks [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutMaturitiesOfFinancialObligationsWithDomesticBanksTextBlock
570 Disclosure of detailed information about Obligations granted by foreign banks [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutObligationsGrantedByForeignBanksTextBlock
571 Disclosure of detailed information about maturities of financial obligations with foreign banks [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutMaturitiesOfFinancialObligationsWithForeignBanksTextBlock
572 1059 - Disclosure - DEBT SECURITIES IN ISSUE (Tables) Network

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http://www.grupobancolombia.com/role/DebtSecuritiesInIssueTables
573 Implied Table Table

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implied:Table
574 Disclosure of debt securities in issue [Abstract] Abstract cib:DisclosureOfDebtSecuritiesInIssueAbstract
575 Disclosure of detailed information about bonds issued to different entities [text block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutBondsIssuedToDifferentEntitiesTextBlock
576 Disclosure of detailed information about breakdown of the Bank securities in issue by maturity [text block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutBreakdownOfBankSecuritiesInIssueByMaturityTextBlock
577 Disclosure of detailed information about debt securities in issue by maturity [text block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutDebtSecuritiesInIssueByMaturityTextBlock
578 1060 - Disclosure - EMPLOYEE BENEFIT PLANS (Tables) Network

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http://www.grupobancolombia.com/role/EmployeeBenefitPlansTables
579 Disclosure of employee benefit plans [Table] Table

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cib:DisclosureOfEmployeeBenefitPlansTable
580 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
581 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
582 Pension plan [member] Member cib:PensionPlansMember
583 Severance obligation [member] Member cib:SeveranceObligationMember
584 Retirement and senior management pension plan [member] Member cib:RetirementAndSeniorManagementPensionPlanMember
585 Senior Management Pension Plan Premium [Member] Member cib:SeniorManagementPensionPlanPremiumMember
586 Other long term benefits [Member] Member cib:OtherLongTermBenefitsMember
587 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
588 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
589 Bancolombia [Member] Member cib:BancolombiaMember
590 Colombia [Member] Member country:CO
591 Guatemala [Member] Member country:GT
592 EL SALVADOR [Member] Member country:SV
593 Net defined benefit liability (asset) [axis] Axis ifrs-full:NetDefinedBenefitLiabilityAssetAxis
594 Net defined benefit liability (asset) [member] Member ifrs-full:NetDefinedBenefitLiabilityAssetMember
595 Pension plan premium [Member] Member cib:PensionPlanPremiumMember
596 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
597 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
598 Banagricola S.A. [Member] Member cib:BanagricolaSaMember
599 Banistmo S.A. [Member] Member cib:BanistmoSaMember
600 Disclosure of employee benefit plans [Line Items] LineItems cib:DisclosureOfEmployeeBenefitPlansLineItems
601 Disclosure of detailed information about post-employment benefit plans [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutPostemploymentBenefitPlansTextBlock
602 Disclosure of defined benefit plans [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDefinedBenefitPlansExplanatory
603 Disclosure of detailed information about periodic net cost of plans previously mentioned and charges credits recognized in consolidated statement of income [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutPeriodicNetCostOfPlansPreviouslyMentionedAndChargesCreditsRecognizedInConsolidatedStatementOfIncomeTextBlock
604 Disclosure of detailed information about change in plan assets [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutChangeInPlanAssetsTextBlock
605 Disclosure of detailed information about expense recognized in Salaries and employee benefits [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutExpenseRecognizedInSalariesAndEmployeeBenefitsTextBlock
606 Disclosure of additional information about defined benefit plans [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAdditionalInformationAboutDefinedBenefitPlansExplanatory
607 Disclosure of information about maturity profile of defined benefit obligation [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInformationAboutMaturityProfileOfDefinedBenefitObligationExplanatory
608 Disclosure of sensitivity analysis for actuarial assumptions [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsExplanatory
609 Fair Value Of Plan Assets Table Text Block [Table Text Block] Concept (Text Block (HTML)) For Period cib:FairValueOfPlanAssetsTableTextBlockTableTextBlock
610 1061 - Disclosure - OTHER LIABILITIES (Tables) Network

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http://www.grupobancolombia.com/role/OtherLiabilitiesTables
611 Implied Table Table

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implied:Table
612 Disclosure Of Other Liabilities Explanatory [Abstract] Abstract cib:DisclosureOfOtherLiabilitiesExplanatoryAbstract
613 Disclosure of detailed information about other liabilities [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutOtherLiabilitiesTextBlock
614 1062 - Disclosure - PROVISIONS AND CONTINGENT LIABILITIES (Tables) Network

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http://www.grupobancolombia.com/role/ProvisionsAndContingentLiabilitiesTables
615 Implied Table Table

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implied:Table
616 Disclosure Of Provisions And Contingent Liabilities [Abstract] Abstract cib:DisclosureOfProvisionsAndContingentLiabilitiesAbstract
617 Disclosure of provisions [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfProvisionsExplanatory
618 Disclosure of commitments [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCommitmentsExplanatory
619 Provisions For Financial Guarantees And Loan Commitments Table Text Block [Text Block] Concept (Text Block (HTML)) For Period cib:ProvisionsForFinancialGuaranteesAndLoanCommitmentsTableTextBlockTextBlock
620 Disclosure Of Contingent liabilities Table text Block [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfContingentLiabilitiesTableTextBlockTextBlock
621 1063 - Disclosure - CAPITAL (Tables) Network

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http://www.grupobancolombia.com/role/CapitalTables
622 Implied Table Table

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implied:Table
623 Disclosure Of Capital [Abstract] Abstract cib:DisclosureOfCapitalAbstract
624 Disclosure of issued capital [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIssuedCapitalExplanatory
625 Disclosure of dividends [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDividendsExplanatory
626 1064 - Disclosure - APPROPRIATED RESERVES (Tables) Network

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http://www.grupobancolombia.com/role/AppropriatedReservesTables
627 Implied Table Table

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implied:Table
628 Disclosure Of Appropriated Reserves [Abstract] Abstract cib:DisclosureOfAppropriatedReservesAbstract
629 Disclosure of reserves within equity [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReservesAndOtherEquityInterestExplanatory
630 1065 - Disclosure - UNCONSOLIDATED STRUCTURED ENTITIES (Tables) Network

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http://www.grupobancolombia.com/role/UnconsolidatedStructuredEntitiesTables
631 Implied Table Table

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implied:Table
632 Disclosure of unconsolidated structured entities [abstract] Abstract ifrs-full:DisclosureOfUnconsolidatedStructuredEntitiesAbstract
633 Disclosure of interests in unconsolidated structured entities [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestsInUnconsolidatedStructuredEntitiesExplanatory
634 1066 - Disclosure - OPERATING INCOME (Tables) Network

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http://www.grupobancolombia.com/role/OperatingIncomeTables
635 Implied Table Table

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implied:Table
636 Disclosure of operating income and operating expense [Abstract] Abstract cib:DisclosureOfOperatingIncomeAndOperatingExpenseAbstract
637 Disclosure of interest income [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestIncomeExplanatory
638 Disclosure of interest expense [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestExpenseExplanatory
639 Disclosure of other operating income [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherOperatingIncomeExplanatory
640 Disclosure of detailed information about dividends received and share of profits of equity method investees [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutDividendsReceivedAndShareOfProfitsOfEquityMethodInvesteesTextBlock
641 Disclosure of Detailed Information about contract assets and liabilities Table Text Block [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutContractAssetsAndLiabilitiesTableTextBlockTextBlock
642 Disclosure of Detailed Information about Operating Income From Revenue From Contract With Customers Table Text Block [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutOperatingIncomeFromRevenueFromContractWithCustomersTableTextBlockTextBlock
643 Disclosure Of Detailed Information About Segment Reportings [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutSegmentReportingsTextBlock
644 1067 - Disclosure - OPERATING EXPENSES (Tables) Network

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http://www.grupobancolombia.com/role/OperatingExpensesTables
645 Implied Table Table

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implied:Table
646 Disclosure of operating expenses [Abstract] Abstract cib:DisclosureOfOperatingExpensesAbstract
647 Disclosure Of detailed information on other administrative and general expenses [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationOnOtherAdministrativeAndGeneralExpensesTextBlock
648 Disclosure of impairment depreciation and amortisation expense [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfImpairmentDepreciationAndAmortisationExpenseTextBlock
649 Disclosure of impairment of assets [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfImpairmentOfAssetsExplanatory
650 1068 - Disclosure - EARNING PER SHARE (‘EPS') (Tables) Network

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http://www.grupobancolombia.com/role/EarningPerShareEpsTables
651 Implied Table Table

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implied:Table
652 Disclosure of earnings per share [Abstract] Abstract cib:DisclosureOfEarningsPerShareAbstract
653 Disclosure of earnings per share [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEarningsPerShareExplanatory
654 1069 - Disclosure - RELATED PARTY TRANSACTIONS (Tables) Network

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http://www.grupobancolombia.com/role/RelatedPartyTransactionsTables
655 Implied Table Table

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implied:Table
656 Disclosure of related party transactions [Abstract] Abstract cib:DisclosureOfRelatedPartyTransactionsAbstract
657 Disclosure of transactions between related parties [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesExplanatory
658 Disclosure of detailed information about financial conglomerate operations [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutFinancialConglomerateOperationsTextBlock
659 1070 - Disclosure - LIABILITIES FROM FINANCING ACTIVITIES (Tables) Network

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http://www.grupobancolombia.com/role/LiabilitiesFromFinancingActivitiesTables
660 Implied Table Table

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implied:Table
661 Disclosure of liabilities from financing activities [Abstract] Abstract cib:DisclosureOfLiabilitiesFromFinancingActivitiesAbstract
662 Disclosure of reconciliation of liabilities arising from financing activities [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesExplanatory
663 1071 - Disclosure - FAIR VALUE OF ASSETS AND LIABILITIES (Tables) Network

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http://www.grupobancolombia.com/role/FairValueOfAssetsAndLiabilitiesTables
664 Implied Table Table

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implied:Table
665 Disclosure of fair value of assets and liabilities [Abstract] Abstract cib:DisclosureOfFairValueOfAssetsAndLiabilitiesAbstract
666 Disclosure of detailed information about carrying amount and the fair value of the assets and liabilities [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutCarryingAmountAndFairValueOfAssetsAndLiabilitiesTextBlock
667 Disclosure of fair value measurement of assets [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueMeasurementOfAssetsExplanatory
668 Disclosure of fair value measurement of liabilities [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueMeasurementOfLiabilitiesExplanatory
669 Disclosure of detailed information about Fair value of assets and liabilities that are not measured at fair value in the Statement of Financial Position [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutFairValueOfAssetsAndLiabilitiesThatAreNotMeasuredAtFairValueInStatementOfFinancialPositionTextBlock
670 Disclosure of detailed information about items measured at fair value on a non-recurring basis [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutItemsMeasuredAtFairValueOnNonrecurringBasisTextBlock
671 Disclosure of detailed information about investment in associates [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutInvestmentInAssociatesTextBlock
672 Disclosure of detailed information about Changes in Level 3 Fair-Value Category [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutChangesInLevel3FairvalueCategoryTextBlock
673 Disclosure of significant unobservable inputs used in fair value measurement of assets [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsExplanatory
674 1072 - Disclosure - DISCONTINUED OPERATIONS (Tables) Network

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http://www.grupobancolombia.com/role/DiscontinuedOperationsTables
675 Implied Table Table

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implied:Table
676 Disclosure of discontinued operations [Abstract] Abstract cib:DisclosureOfDiscontinuedOperationsAbstract
677 Disclosure of detailed information about the analysis of the results of discontinued operations [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutAnalysisOfResultsOfDiscontinuedOperationsTextBlock
678 1073 - Disclosure - RISK MANAGEMENT (Tables) Network

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http://www.grupobancolombia.com/role/RiskManagementTables
679 Disclosure of risks management [Table] Table

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cib:DisclosureOfRisksManagementTable
680 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
681 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
682 Impairment of financial assets [axis] Axis ifrs-full:ImpairmentOfFinancialAssetsAxis
683 Entity's total for impairment of financial assets [member] Member ifrs-full:EntitysTotalForImpairmentOfFinancialAssetsMember
684 Risk Management [Line Items] LineItems cib:RiskManagementLineItems
685 Disclosure of credit risk exposure [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCreditRiskExposureExplanatory
686 Disclosure of Credit Risk Management, Borrower Portfolio Variables Explanatory [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfCreditRiskManagementBorrowerPortfolioVariablesExplanatoryTextBlock
687 Summary of Amounts and Allowance of Financial Assets Explanatory [Text Block] Concept (Text Block (HTML)) For Period cib:SummaryOfAmountsAndAllowanceOfFinancialAssetsExplanatoryTextBlock
688 Disclosure of collateral [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCollateralExplanatory
689 Disclosure Of Loans And Advances To Customer Explanatorys [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfLoansAndAdvancesToCustomerExplanatorysTextBlock
690 Disclosure Of Detailed Information of Maturity Analysis of Loans And Receivables [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationOfMaturityAnalysisOfLoansAndReceivablesTextBlock
691 Disclosure of details of credit portfolio by main economic activity of borrower [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailsOfCreditPortfolioByMainEconomicActivityOfBorrowerTextBlock
692 Disclosure of details of loans and financial leases by country [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailsOfLoansAndFinancialLeasesByCountryTextBlock
693 Disclosure of financial assets that are either past due or impaired [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedExplanatory
694 Analysis of age of financial assets that are past due but not impaired [text block] Concept (Text Block (HTML)) For Period ifrs-full:AnalysisOfAgeOfFinancialAssetsThatArePastDueButNotImpaired
695 Disclosure Of Detailed Information About Impaired Loans And Financial Leases [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutImpairedLoansAndFinancialLeasesTextBlock
696 Disclosure of detailed information about credit quality analysis of the group [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutCreditQualityAnalysisOfGroupTextBlock
697 Disclosure of detailed information about maximum exposure level to the credit risk [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutMaximumExposureLevelToCreditRiskTextBlock
698 Disclosure of detailed information about individual evaluation of impairment at the end of the period for other financial instruments [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutIndividualEvaluationOfImpairmentAtEndOfPeriodForOtherFinancialInstrumentsTextBlock
699 Disclosure of detailed information about risk exposure by economic sector and risk country [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutRiskExposureByEconomicSectorAndRiskCountryTextBlock
700 Disclosure of internal credit grades [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInternalCreditExposuresExplanatory
701 Disclosure of detailed information about sensitivity of interest rate [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutSensitivityOfInterestRateTextBlock
702 Disclosure of Currency risk explanatory [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfCurrencyRiskExplanatoryTextBlock
703 Disclosure of market risk [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfMarketRiskExplanatory
704 Disclosure of detailed information about interest rate risk sensitivity in local currency [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutInterestRateRiskSensitivityInLocalCurrencyTextBlock
705 Sensitivity analysis for types of market risk [text block] Concept (Text Block (HTML)) For Period ifrs-full:SensitivityAnalysisForEachTypeOfMarketRisk
706 Disclosure of liquidity risk [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfLiquidityRiskExplanatory
707 Disclosure of detailed information about liquid assets held by the bank [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutLiquidAssetsHeldByBankTextBlock
708 Disclosure of detailed information about contractual maturities of principal and interest balances of financial assets [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutContractualMaturitiesOfPrincipalAndInterestBalancesOfFinancialAssetsTextBlock
709 Disclosure of detailed information about contractual maturities of principal and interest balances of financial liabilities [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutContractualMaturitiesOfPrincipalAndInterestBalancesOfFinancialLiabilitiesTextBlock
710 Disclosure of detailed information about contractual maturities of financial guarantees [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutContractualMaturitiesOfFinancialGuaranteesTextBlock
711 Disclosure of compliance of regulatory capital and capital adequacy ratios [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfComplianceOfRegulatoryCapitalAndCapitalAdequacyRatiosTextBlock
712 Disclosure Of Detailed Information About Maximum Exposure Level To Collateral [Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutMaximumExposureLevelToCollateralTextBlock
713 Disclosure of Detailed Information about financial assets and related collateral held in order to mitigate potential losses Table Text Block [Table Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutFinancialAssetsAndRelatedCollateralHeldInOrderToMitigatePotentialLossesTableTextBlockTableTextBlock
714 Disclosure of Detailed Information about changes in the expected loss due to changes in macroeconomic variables Table Text Block [Table Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutChangesInTheExpectedLossDueToChangesInMacroeconomicVariablesTableTextBlockTableTextBlock
715 1074 - Disclosure - IMPACTS ON APPLICATION OF NEW STANDARDS (Tables) Network

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http://www.grupobancolombia.com/role/ImpactsOnApplicationOfNewStandardsTables
716 Implied Table Table

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implied:Table
717 Disclosure of expected impact of initial application of new standards or interpretations [abstract] Abstract ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretationsAbstract
718 Disclosure of detailed information about the impact on adoption of IFRS 9 [Table Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutTheImpactOnAdoptionOfIFRS9TableTextBlock
719 Disclosure of detailed information about reconciliation of the carrying amount and measurement categories in accordance with IFRS 9 [Table Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutReconciliationOfTheCarryingAmountAndMeasurementCategoriesInAccordanceWithIFRS9TableTextBlock
720 Disclosure of detailed information about the impact on allowance for credit losses under the incurred loss model and the expected credit losses model in accordance with IFRS 9 [Table Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutTheImpactOnAllowanceForCreditLossesUnderTheIncurredLossModelAndTheExpectedCreditLossesModelInAccordanceWithIFRS9TableTextBlock
721 Disclosure of detailed information about the impact on retained arising from a change in measurement attribute on the entitys transition to IFRS 9 [Table Text Block] Concept (Text Block (HTML)) For Period cib:DisclosureOfDetailedInformationAboutTheImpactOnRetainedArisingFromAChangeInMeasurementAttributeOnTheEntitysTransitionToIFRS9TableTextBlock
722 1075 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Details) Network

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http://www.grupobancolombia.com/role/SignificantAccountingPoliciesDetails
723 Statement [Table] Table

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us-gaap:StatementTable
724 Class of Stock [Axis] Axis us-gaap:StatementClassOfStockAxis
725 Class of Stock [Domain] Member us-gaap:ClassOfStockDomain
726 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
727 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
728 Fiduciaria Bancolombia S.A. Sociedad Fiduciaria [Member] Member cib:FiduciariaBancolombiaSaSociedadFiduciariaMember
729 Banca de Inversion Bancolombia S.A. Corporacion Financiera [Member] Member cib:BancaDeInversionBancolombiaSaCorporacionFinancieraMember
730 Valores Bancolombia S.A. Comisionista de Bolsa [Member] Member cib:ValoresBancolombiaSaComisionistaDeBolsaMember
731 Renting Colombia S.A.S (Before Renting Colombia S.A.) [Member] Member cib:RentingColombiaSasBeforeRentingColombiaSaMember
732 Transportempo S.A.S. [Member] Member cib:TransportempoSasMember
733 Valores Simesa S.A. [Member] Member cib:ValoresSimesaSaMember
734 Inversiones CFNS S.A.S. [Member] Member cib:InversionesCfnsSasMember
735 BIBA Inmobiliaria S.A.S. [Member] Member cib:BibaInmobiliariaSasMember
736 FCP Fondo Colombia Inmobiliario. [Member] Member cib:FcpFondoColombiaInmobiliarioMember
737 Prosicol S.A.S. In liquidation [Member] Member cib:ProsicolSasInLiquidationMember
738 Fideicomiso Lote Abelardo Castro. [Member] Member cib:FideicomisoLoteAbelardoCastroMember
739 Bancolombia Panama S.A. [Member] Member cib:BancolombiaPanamaSaMember
740 Sistemas de Inversiones y Negocios S.A. Sinesa [Member] Member cib:SistemasDeInversionesYNegociosSaSinesaMember
741 Banagricola S.A. [Member] Member cib:BanagricolaSaMember
742 Banistmo S.A. [Member] Member cib:BanistmoSaMember
743 Banistmo Investment Corporation S.A. [Member] Member cib:BanistmoInvestmentCorporationSaMember
744 Financomer S.A. [Member] Member cib:FinancomerSaMember
745 Leasing Banistmo S.A. [Member] Member cib:LeasingBanistmoSaMember
746 Valores Banistmo S.A. [Member] Member cib:ValoresBanistmoSaBeforeValoresBancolombiaPanamaSaMember
747 Banistmo Capital Markets Group Inc. [Member] Member cib:BanistmoCapitalMarketsGroupIncMember
748 Williamsburg International Corp. [Member] Member cib:WilliamsburgInternationalCorpMember
749 Van Dyke Overseas Corp. [Member] Member cib:VanDykeOverseasCorpMember
750 Anavi Investment Corporation S.A. [Member] Member cib:AnaviInvestmentCorporationSaMember
751 Desarrollo de Oriente S.A. [Member] Member cib:DesarrolloDeOrienteSaMember
752 Steens Enterpresies S.A. [Member] Member cib:SteensEnterpresiesSaMember
753 Ordway Holdings S.A. [Member] Member cib:OrdwayHoldingsSaMember
754 Banistmo Asset Management Inc. [Member] Member cib:BanistmoAssetManagementIncMember
755 Inmobiliaria Bickford S.A. [Member] Member cib:InmobiliariaBickfordSaMember
756 Banco Agricola S.A. [Member] Member cib:BancoAgricolaSaMember
757 Arrendadora Financiera S.A. Arfinsa [Member] Member cib:ArrendadoraFinancieraSaArfinsaMember
758 Credibac S.A. de C.V. [Member] Member cib:CredibacSaDeCvMember
759 Valores Banagricola S.A. de C.V. [Member] Member cib:ValoresBanagricolaSaDeCvMember
760 Inversiones Financieras Banco Agricola S.A. IFBA [Member] Member cib:InversionesFinancierasBancoAgricolaSaIfbaMember
761 Gestora de Fondos de Inversion Banagricola S.A. [Member] Member cib:GestoraDeFondosDeInversionBanagricolaSaMember
762 Arrendamiento Operativo CIB S.A.C. [Member] Member cib:ArrendamientoOperativoCibSacMember
763 Fondo de Inversion en Arrendamiento Operativo Renting Peru [Member] Member cib:FondoDeInversionEnArrendamientoOperativoRentingPeruMember
764 Capital Investments SAFI S.A. [Member] Member cib:CapitalInvestmentsSafiSaMember
765 FiduPeru S.A. Sociedad Fiduciaria [Member] Member cib:FiduperuSaSociedadFiduciariaMember
766 Leasing Peru S.A. [Member] Member cib:LeasingPeruSaMember
767 Banagricola Guatemala S.A. [Member] Member cib:BanagricolaGuatemalaSaMember
768 Banco Agromercantil de Guatemala S.A. [Member] Member cib:BancoAgromercantilDeGuatemalaSaMember
769 Mercom Bank Ltd. [Member] Member cib:MercomBankLtdMember
770 Seguros Agromercantil de Guatemala S.A. [Member] Member cib:SegurosAgromercantilDeGuatemalaSaMember
771 Financiera Agromercantil S.A. [Member] Member cib:FinancieraAgromercantilSaMember
772 Agrovalores S.A. [Member] Member cib:AgrovaloresSaMember
773 Tarjeta Agromercantil S.A. In liquidation [Member] Member cib:TarjetaAgromercantilSaInLiquidationMember
774 Arrendadora Agromercantil S.A. [Member] Member cib:ArrendadoraAgromercantilSaMember
775 Agencia de Seguros y Fianzas Agromercantil S.A. [Member] Member cib:AgenciaDeSegurosYFianzasAgromercantilSaMember
776 Asistencia y Ajustes S.A. [Member] Member cib:AsistenciaYAjustesSaMember
777 Serproba S.A. [Member] Member cib:SerprobaSaMember
778 Servicios de Formalizacion S.A. [Member] Member cib:ServiciosDeFormalizacionSaMember
779 Conserjeria, Mantenimiento y Mensajeria S.A. [Member] Member cib:ConserjeriaMantenimientoYMensajeriaSaMember
780 Media Plus S.A. [Member] Member cib:MediaPlusSaMember
781 New Alma Enterprises Ltd. [Member] Member cib:NewAlmaEnterprisesLtdMember
782 Bancolombia Puerto Rico Internacional Inc. [Member] Member cib:BancolombiaPuertoRicoInternacionalIncMember
783 Bancolombia Cayman S.A. [Member] Member cib:BancolombiaCaymanSaMember
784 Bagricola Costa Rica S.A. [Member] Member cib:BagricolaCostaRicaSaMember
785 Suvalor Panama Fondos de Inversion S.A. [Member] Member cib:SuvalorPanamaFondosDeInversionSaMember
786 Suvalor Renta Fija Internacional Largo Plazo S.A. [Member] Member cib:SuvalorRentaFijaInternacionalLargoPlazoSaMember
787 Suvalor Renta Fija Internacional Corto Plazo S.A. [Member] Member cib:SuvalorRentaFijaInternacionalCortoPlazoSaMember
788 Grupo Agromercantil Holding S.A. [Member] Member cib:GrupoAgromercantilHoldingSaMember
789 Statement [Line Items] LineItems us-gaap:StatementLineItems
790 Country of incorporation of subsidiary Concept (Text/String) For Period ifrs-full:CountryOfIncorporationOrResidenceOfSubsidiary
791 The type of business of subsidiary Concept (Text/String) For Period cib:TypeOfBusinessOfSubsidiary
792 Proportion of ownership interest in subsidiary Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInSubsidiary
793 1076 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Details 1) Network

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http://www.grupobancolombia.com/role/SignificantAccountingPoliciesDetails1
794 Statement [Table] Table

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us-gaap:StatementTable
795 Class of Stock [Axis] Axis us-gaap:StatementClassOfStockAxis
796 Class of Stock [Domain] Member us-gaap:ClassOfStockDomain
797 Unconsolidated structured entities [axis] Axis ifrs-full:UnconsolidatedStructuredEntitiesAxis
798 Entity's total for unconsolidated structured entities [member] Member ifrs-full:EntitysTotalForUnconsolidatedStructuredEntitiesMember
799 FCP Fondo Colombia Inmobiliario [Member] Member cib:FcpFondoColombiaInmobiliarioSaMember
800 Suvalor Panama Fondo de Inversion [Member] Member cib:SuvalorPanamaFondoDeInversionMember
801 Fideicomiso Lote Abelardo Castro. [Member] Member cib:FideicomisoLoteAbelardoCastroMember
802 Fondo de Inversion en Arrendamiento Operativo Renting Peru [Member] Member cib:FondoDeInversionEnArrendamientoOperativoRentingPeruMember
803 Statement [Line Items] LineItems us-gaap:StatementLineItems
804 Country of incorporation of subsidiary Concept (Text/String) For Period ifrs-full:CountryOfIncorporationOrResidenceOfSubsidiary
805 Proportion of ownership interest in subsidiary Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInSubsidiary
806 Assets Concept (Monetary) As Of Debit ifrs-full:Assets
807 1077 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Details 2) Network

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http://www.grupobancolombia.com/role/SignificantAccountingPoliciesDetails2
808 Disclosure of Significant Accounting Policies [Table] Table

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cib:DisclosureOfSignificantAccountingPoliciesTable
809 Unconsolidated structured entities [axis] Axis ifrs-full:UnconsolidatedStructuredEntitiesAxis
810 Entity's total for unconsolidated structured entities [member] Member ifrs-full:EntitysTotalForUnconsolidatedStructuredEntitiesMember
811 FCP Fondo Colombia Inmobiliario S.A. [Member] Member cib:FcpFondoColombiaInmobiliarioSaMember
812 Grupo Agromercantil Holding [Member] Member cib:GrupoAgromercantilHoldingMember
813 Disclosure of Significant Accounting Policies [Line Items] LineItems cib:DisclosureOfSignificantAccountingPoliciesLineItems
814 Assets Concept (Monetary) As Of Debit ifrs-full:Assets
815 Liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
816 Net assets Concept (Monetary) As Of Debit ifrs-full:NetAssetsLiabilities
817 Equity Concept (Monetary) As Of Credit ifrs-full:Equity
818 Valuation of investment properties Concept (Monetary) For Period Credit cib:IncomeOnValuationOfInvestmentProperties
819 Valuation of trust rights Concept (Monetary) For Period Credit cib:IncomeOnValuationOfTrustRights
820 Rents Concept (Monetary) For Period Credit ifrs-full:RentalIncome
821 Profits of equity method investees Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
822 Other Income Concept (Monetary) For Period Credit ifrs-full:OtherIncome
823 Total Income Concept (Monetary) For Period Credit ifrs-full:Revenue
824 Interest on loans Concept (Monetary) For Period Debit ifrs-full:InterestExpenseOnBankLoansAndOverdrafts
825 Net interest margin and valuation income on financial instruments after impairment on loans and financial leases and off balance sheet credit instruments Concept (Monetary) For Period Credit cib:NetInterestMarginAndValuationIncomeOnFinancialInstrumentsBeforeImpairmentOnLoansAndFinancialLeasesAndOffBalanceSheetCreditInstruments
826 Total fees and commission, net Concept (Monetary) For Period Debit ifrs-full:FeeAndCommissionExpense
827 Other expenses Concept (Monetary) For Period Debit ifrs-full:OtherExpenseByNature
828 Total Expenses Concept (Monetary) For Period Debit ifrs-full:ExpenseByNature
829 Other operating income Concept (Monetary) For Period Credit ifrs-full:MiscellaneousOtherOperatingIncome
830 Dividends received and equity method Concept (Monetary) For Period Credit ifrs-full:RevenueFromDividends
831 Total operating income, net Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
832 Operating expense Concept (Monetary) For Period Debit ifrs-full:OperatingExpense
833 Income tax Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
834 Net Income Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
835 Net cash (used in) provided by operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
836 Net cash (used in) provided by investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
837 Net cash (used in) provided by financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
838 Cash and cash equivalents at beginning of year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
839 Cash and cash equivalents at end of year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
840 Investments at fair value through OCI Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
841 Translation adjustment Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation
842 Others Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesOnRevaluation
843 Total other comprehensive income Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
844 Trust fees Concept (Monetary) As Of Debit cib:TrustFees
845 1078 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Details 3) Network

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http://www.grupobancolombia.com/role/SignificantAccountingPoliciesDetails3
846 Implied Table Table

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implied:Table
847 Disclosure of Significant Accounting Policies [Abstract] Abstract cib:DisclosureOfSignificantAccountingPoliciesAbstract
848 Closing exchange rate Concept (Decimal) As Of ifrs-full:ClosingForeignExchangeRate
849 Average rate for the period ended at Concept (Decimal) For Period ifrs-full:AverageForeignExchangeRate
850 1079 - Disclosure - SIGNIFlCANT ACCOUNTING POLICIES (Details 4) Network

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http://www.grupobancolombia.com/role/SigniflcantAccountingPoliciesDetails4
851 Statement [Table] Table

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us-gaap:StatementTable
852 Type of measurement of expected credit losses [axis] Axis ifrs-full:TypeOfMeasurementOfExpectedCreditLossesAxis
853 Type of measurement of expected credit losses [member] Member ifrs-full:TypeOfMeasurementOfExpectedCreditLossesMember
854 Stage Two [Member] Member cib:StageTwoMember
855 Stage Three [Member] Member cib:StageThreeMember
856 Credit impairment of financial instruments [axis] Axis ifrs-full:CreditImpairmentOfFinancialInstrumentsAxis
857 Credit impairment of financial instruments [member] Member ifrs-full:CreditImpairmentOfFinancialInstrumentsMember
858 Threshold [Member] Member cib:ThresholdMember
859 Watchlist [Member] Member cib:WatchlistMember
860 Restructured [Member] Member cib:RestructuredMember
861 More Than Thirty Days [Member] Member cib:MoreThanThirtyDaysMember
862 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
863 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
864 Commercial Loans [Member] Member cib:CommercialLoansMember
865 Mortgages [Member] Member ifrs-full:MortgagesMember
866 Consumer loans [member] Member ifrs-full:ConsumerLoansMember
867 Statement [Line Items] LineItems us-gaap:StatementLineItems
868 Percentage Of Loans And Receivables Concept (Percent) For Period cib:PercentageOfLoansAndReceivables
869 1080 - Disclosure - SIGNIFlCANT ACCOUNTING POLICIES (Details 5) Network

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http://www.grupobancolombia.com/role/SigniflcantAccountingPoliciesDetails5
870 Statement [Table] Table

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us-gaap:StatementTable
871 Scenario Type [Axis] Axis cib:ScenarioTypeAxis
872 Scenario Type [Domain] Member cib:ScenarioTypeDomain
873 Base Scenario Member cib:BaseScenarioMember
874 Optimistic Scenario Member cib:OptimisticScenarioMember
875 Pessimistic Scenario Member cib:PessimisticScenarioMember
876 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
877 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
878 Republic Of Colombia [Member] Member cib:RepublicOfColombiaMember
879 Salvador [Member] Member cib:SalvadorMember
880 Panama [Member] Member country:PA
881 Guatemala [Member] Member country:GT
882 Projection [Axis] Axis cib:ProjectionAxis
883 Projection [Domain] Member cib:ProjectionDomain
884 Year Two [Member] Member cib:YearTwoMember
885 Year Three [Member] Member cib:YearThreeMember
886 Year Four [Member] Member cib:YearFourMember
887 Year Five [Member] Member cib:YearFiveMember
888 Year Six [Member] Member cib:YearSixMember
889 Year seven [Member] Member cib:YearSevenMember
890 Year One [Member] Member cib:YearOneMember
891 Statement [Line Items] LineItems us-gaap:StatementLineItems
892 GDP growth Concept (Percent) As Of cib:GrossDomesticProductGrowthRate
893 Inflation Concept (Percent) As Of cib:InflationRate
894 Monetary Policy Rate Concept (Percent) As Of cib:MonetoryPolicyRate
895 Unemployment Concept (Percent) As Of cib:UnemploymentPercentage
896 Exchange Rate Concept (Percent) As Of cib:ExchangeRate
897 Exports Concept (Monetary) For Period Credit cib:Exports
898 Imports Concept (Monetary) For Period Debit cib:Imports
899 Current Account Deficit Concept (Percent) For Period cib:CurrentAccountDeficit
900 Fiscal Budget Balance Concept (Percent) For Period cib:FiscalBudgetBalance
901 1081 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Details 6) Network

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http://www.grupobancolombia.com/role/SignificantAccountingPoliciesDetails6
902 Statement [Table] Table

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us-gaap:StatementTable
903 External credit grades [axis] Axis ifrs-full:ExternalCreditGradesAxis
904 Entity's total for external credit grades [member] Member ifrs-full:EntitysTotalForExternalCreditGradesMember
905 BA One Or BB Plus [Member] Member cib:BAOneOrBBPlusMember
906 BA Two Or BB [Member] Member cib:BATwoOrBBMember
907 BA Three Or BB Negative [Member] Member cib:BAThreeOrBBNegativeMember
908 B One Or B Plus [Member] Member cib:BOneOrBPlusMember
909 B Two Or B [Member] Member cib:BTwoOrBMember
910 B Three Or B Negative [Member] Member cib:BThreeOrBNegativeMember
911 Caa Or Ccc [Member] Member cib:CaaOrCccMember
912 Statement [Line Items] LineItems us-gaap:StatementLineItems
913 Number Of Investment Notches Concept (Integer) As Of cib:NumberOfInvestmentNotches
914 1082 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Details 7) Network

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http://www.grupobancolombia.com/role/SignificantAccountingPoliciesDetails7
915 Statement [Table] Table

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us-gaap:StatementTable
916 Type of measurement of expected credit losses [axis] Axis ifrs-full:TypeOfMeasurementOfExpectedCreditLossesAxis
917 Type of measurement of expected credit losses [member] Member ifrs-full:TypeOfMeasurementOfExpectedCreditLossesMember
918 12-month expected credit losses [member] Member ifrs-full:TwelvemonthExpectedCreditLossesMember
919 Lifetime expected credit losses [member] Member ifrs-full:LifetimeExpectedCreditLossesMember
920 Statement [Line Items] LineItems us-gaap:StatementLineItems
921 Information on how entity determined whether credit risk of financial instruments recognized initially Concept (Text/String) For Period cib:InformationOnHowEntityDeterminedWhetherCreditRiskOfFinancialInstrumentsRecognizedInitially
922 Information on how entity determined whether credit risk of financial instruments has increased significantly since initial recognition Concept (Text/String) For Period ifrs-full:InformationOnHowEntityDeterminedWhetherCreditRiskOfFinancialInstrumentsHasIncreasedSignificantlySinceInitialRecognition
923 Information on how entity determined that financial assets are credit-impaired financial assets Concept (Text/String) For Period ifrs-full:InformationOnHowEntityDeterminedThatFinancialAssetsAreCreditimpairedFinancialAssets
924 1083 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Details 8) Network

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http://www.grupobancolombia.com/role/SignificantAccountingPoliciesDetails8
925 Disclosure of Significant Accounting Policies [Table] Table

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cib:DisclosureOfSignificantAccountingPoliciesTable
926 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
927 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
928 Consumer [member] Member ifrs-full:ConsumerLoansMember
929 Commercial [Member] Member cib:CommercialMember
930 Small Business Loan [Member] Member cib:SmallBusinessLoanMember
931 Mortgage [member] Member ifrs-full:MortgagesMember
932 Disclosure of Significant Accounting Policies [Line Items] LineItems cib:DisclosureOfSignificantAccountingPoliciesLineItems
933 Loans Write off, Delinquency Conditions Concept (Text/String) For Period cib:LoansWriteOffDelinquencyConditions
934 1084 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Details 9) Network

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http://www.grupobancolombia.com/role/SignificantAccountingPoliciesDetails9
935 Disclosure of Significant Accounting Policies [Table] Table

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*

cib:DisclosureOfSignificantAccountingPoliciesTable
936 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
937 Property, Plant and Equipment [Member] Member ifrs-full:PropertyPlantAndEquipmentMember
938 Buildings [member] Member ifrs-full:BuildingsMember
939 Furniture and fixtures [member] Member ifrs-full:FixturesAndFittingsMember
940 Computer equipment [member] Member ifrs-full:ComputerEquipmentMember
941 Equipment and machinery [member] Member ifrs-full:OtherPropertyPlantAndEquipmentMember
942 Vehicles [Member] Member ifrs-full:VehiclesMember
943 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
944 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
945 Disclosure of Significant Accounting Policies [Line Items] LineItems cib:DisclosureOfSignificantAccountingPoliciesLineItems
946 Useful lives or depreciation rates, property, plant and equipment Concept (Text/String) For Period ifrs-full:UsefulLivesOrDepreciationRatesPropertyPlantAndEquipment
947 1085 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Details Textual) Network

*

*

http://www.grupobancolombia.com/role/SignificantAccountingPoliciesDetailsTextual
948 Statement [Table] Table

*

*

us-gaap:StatementTable
949 Class of Stock [Axis] Axis us-gaap:StatementClassOfStockAxis
950 Class of Stock [Domain] Member us-gaap:ClassOfStockDomain
951 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
952 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
953 Banistmo [Member] Member cib:BanistmoMember
954 Bancolombia Panama [Member] Member cib:BancolombiaPanamaMember
955 CP Colombia Inmobiliario S.A. [Member] Member cib:CpColombiaInmobiliarioSaMember
956 Grupo Agromercantil Holding S.A. [Member] Member cib:GrupoAgromercantilHoldingSaMember
957 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
958 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
959 Range [Axis] Axis ifrs-full:RangeAxis
960 Ranges [member] Member ifrs-full:RangesMember
961 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
962 Top of range [member] Member ifrs-full:TopOfRangeMember
963 Past due status [axis] Axis ifrs-full:PastDueStatusAxis
964 Past due status [member] Member ifrs-full:PastDueStatusMember
965 Later than one month and not later than two months [member] Member ifrs-full:LaterThanOneMonthAndNotLaterThanTwoMonthsMember
966 Later than three months [member] Member ifrs-full:LaterThanThreeMonthsMember
967 Probability of default [axis] Axis ifrs-full:ProbabilityOfDefaultAxis
968 Entity's total for probability of default [member] Member ifrs-full:EntitysTotalForProbabilityOfDefaultMember
969 Probability of default [member] Member ifrs-full:ProbabilityOfDefaultMember
970 Impairment of financial assets [axis] Axis ifrs-full:ImpairmentOfFinancialAssetsAxis
971 Entity's total for impairment of financial assets [member] Member ifrs-full:EntitysTotalForImpairmentOfFinancialAssetsMember
972 Financial assets individually assessed for credit losses [member] Member ifrs-full:FinancialAssetsIndividuallyAssessedForCreditLossesMember
973 Type of measurement of expected credit losses [axis] Axis ifrs-full:TypeOfMeasurementOfExpectedCreditLossesAxis
974 Type of measurement of expected credit losses [member] Member ifrs-full:TypeOfMeasurementOfExpectedCreditLossesMember
975 Stage Three [Member] Member cib:StageThreeMember
976 Statement [Line Items] LineItems us-gaap:StatementLineItems
977 Assets (liabilities) Concept (Monetary) As Of Debit ifrs-full:NetAssetsLiabilities
978 Capital reserve Concept (Monetary) As Of Credit ifrs-full:CapitalReserve
979 Proportion of ownership interest in subsidiary Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInSubsidiary
980 Profit (loss), attributable to non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
981 Non-controlling interests Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
982 Percentage of voting equity interests acquired Concept (Percent) As Of ifrs-full:PercentageOfVotingEquityInterestsAcquired
983 Dividends received from associates, classified as investing activities Concept (Monetary) For Period Debit ifrs-full:DividendsReceivedFromAssociatesClassifiedAsInvestingActivities
984 Description of material leasing arrangements by lessee classified as operating lease Concept (Text/String) For Period ifrs-full:DescriptionOfMaterialLeasingArrangementsByLesseeClassifiedAsOperatingLease
985 Intangible Assets With Useful Life Concept (xbrli:durationItemType) For Period cib:IntangibleAssetsWithUsefulLife
986 Preferred dividend as percentage of the subscription price Concept (Percent) For Period cib:PreferredDividendAsPercentageOfSubscriptionPrice
987 Effective interest rate of financial instruments Concept (Percent) As Of cib:EffectiveInterestRateOfFinancialInstruments
988 Expected credit loss rate Concept (Percent) As Of ifrs-full:ExpectedCreditLossRate
989 Minimum Amount of Loans to Be Individually Assessed Concept (Monetary) For Period Credit cib:MinimumAmountOfLoansToBeIndividuallyAssessed
990 1086 - Disclosure - OPERATING SEGMENTS (Details) Network

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*

http://www.grupobancolombia.com/role/OperatingSegmentsDetails
991 Operating segments [Table] Table

*

*

cib:OperatingSegmentsTable
992 Segment consolidation items [axis] Axis ifrs-full:SegmentConsolidationItemsAxis
993 Entity's total for segment consolidation items [member] Member ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
994 Banking Colombia [Member] Member cib:BankingColombiaMember
995 Banking Panama [Member] Member cib:BankingPanamaMember
996 Banking El Salvador [Member] Member cib:BankingElSalvadorMember
997 Banking Guatemala [Member] Member cib:BankingGuatemalaMember
998 Trust [Member] Member cib:TrustMember
999 Investment banking [Member] Member cib:InvestmentBankingMember
1000 Brokerage [Member] Member cib:BrokerageMember
1001 Off shore [Member] Member cib:OffShoreMember
1002 All other segments [Member] Member cib:AllOtherSegmentMember
1003 Total before elimination [Member] Member cib:TotalBeforeEliminationMember
1004 Adjustments for consolidation [Member] Member cib:AdjustmentsForConsolidationMember
1005 Operating segments [Line Items] LineItems cib:OperatingSegmentsLineItems
1006 Total interest and valuation Concept (Monetary) For Period Credit ifrs-full:RevenueFromInterest
1007 Interest income on loans and financial leases Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnOtherFinancialAssets
1008 Total Debt investments Concept (Monetary) For Period Credit cib:InterestIncomeOnDebtInvestments
1009 Derivatives Concept (Monetary) For Period Credit cib:InterestIncomeOnDerivatives
1010 Total liquidity operations Concept (Monetary) For Period Credit cib:IncomeLossOnLiquidityOperations
1011 Interest expenses Concept (Monetary) For Period Debit ifrs-full:InterestExpense
1012 Net interest margin and valuation income on financial instruments before impairment on loans and financial leases and off balance sheet credit instruments Concept (Monetary) For Period Credit cib:NetInterestMarginAndValuationIncomeOnFinancialInstrumentsBeforeImpairmentOnLoansAndFinancialLeasesAndOffBalanceSheetCreditInstruments
1013 Total credit impairment charges, net Concept (Monetary) For Period Debit cib:TotalCreditImpairmentChargesNet
1014 Net interest margin and valuation income on financial instruments after impairment on loans and financial leases and off balance sheet credit instruments Concept (Monetary) For Period Credit ifrs-full:FinanceIncomeCost
1015 Revenues (Expenses) from transactions with other operating segments of the Bank Concept (Monetary) For Period Credit cib:RevenuesExpensesFromTransactionsWithOtherOperatingSegments
1016 Fee and commission income Concept (Monetary) For Period Credit ifrs-full:FeeAndCommissionIncome
1017 Fees and commission expenses Concept (Monetary) For Period Debit ifrs-full:FeeAndCommissionExpense
1018 Total fees and commission income, net Concept (Monetary) For Period Credit ifrs-full:FeeAndCommissionIncomeExpense
1019 Other operating income Concept (Monetary) For Period Credit ifrs-full:MiscellaneousOtherOperatingIncome
1020 Dividends received, and share of profits of equity method investees Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
1021 Recovery (Impairment) charges on cash-generating unit Concept (Monetary) For Period Credit cib:RecoveryImpairmentChargesOnCashGeneratingUnits
1022 Total operating income, net Concept (Monetary) For Period Credit ifrs-full:IncomeFromContinuingOperationsAttributableToOwnersOfParent
1023 Operating expenses Concept (Monetary) For Period Debit cib:OperatingExpensesExcludingImpairmentDepreciationAndAmortization
1024 Impairment, depreciation and amortization Concept (Monetary) For Period Debit ifrs-full:DepreciationAmortisationAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss
1025 Total operating expenses Concept (Monetary) For Period Debit ifrs-full:OperatingExpense
1026 Profit before tax Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
1027 1087 - Disclosure - OPERATING SEGMENTS (Details 1) Network

*

*

http://www.grupobancolombia.com/role/OperatingSegmentsDetails1
1028 Operating segments [Table] Table

*

*

cib:OperatingSegmentsTable
1029 Segment consolidation items [axis] Axis ifrs-full:SegmentConsolidationItemsAxis
1030 Entity's total for segment consolidation items [member] Member ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
1031 Banking Colombia [Member] Member cib:BankingColombiaMember
1032 Banking Panama [Member] Member cib:BankingPanamaMember
1033 Banking El Salvador [Member] Member cib:BankingElSalvadorMember
1034 Banking Guatemala [Member] Member cib:BankingGuatemalaMember
1035 Trust [Member] Member cib:TrustMember
1036 Investment banking [Member] Member cib:InvestmentBankingMember
1037 Brokerage [Member] Member cib:BrokerageMember
1038 Off shore [Member] Member cib:OffShoreMember
1039 All other segments [Member] Member cib:AllOtherSegmentMember
1040 Total before elimination [Member] Member cib:TotalBeforeEliminationMember
1041 Adjustments for consolidation [Member] Member cib:AdjustmentsForConsolidationMember
1042 Total after Before Elimination [Member] Member cib:TotalAfterBeforeEliminationMember
1043 Operating segments [Line Items] LineItems cib:OperatingSegmentsLineItems
1044 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
1045 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
1046 1088 - Disclosure - OPERATING SEGMENTS (Details 2) Network

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http://www.grupobancolombia.com/role/OperatingSegmentsDetails2
1047 Operating segments [Table] Table

*

*

cib:OperatingSegmentsTable
1048 Segment consolidation items [axis] Axis ifrs-full:SegmentConsolidationItemsAxis
1049 Entity's total for segment consolidation items [member] Member ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
1050 Banking Colombia [Member] Member cib:BankingColombiaMember
1051 Banking El Salvador [Member] Member cib:BankingElSalvadorMember
1052 Trust [Member] Member cib:TrustMember
1053 Investment banking [Member] Member cib:InvestmentBankingMember
1054 All other segment [Member] Member cib:AllOtherSegmentMember
1055 Operating segments [Line Items] LineItems cib:OperatingSegmentsLineItems
1056 Investments in associates and joint ventures Concept (Monetary) As Of Debit ifrs-full:InvestmentsInSubsidiariesJointVenturesAndAssociates
1057 Equity method Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod
1058 1089 - Disclosure - OPERATING SEGMENTS (Details 3) Network

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http://www.grupobancolombia.com/role/OperatingSegmentsDetails3
1059 Operating segments [Table] Table

*

*

cib:OperatingSegmentsTable
1060 Segment consolidation items [axis] Axis ifrs-full:SegmentConsolidationItemsAxis
1061 Entity's total for segment consolidation items [member] Member ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
1062 Banking Colombia [Member] Member cib:BankingColombiaMember
1063 Banking Panama [Member] Member cib:BankingPanamaMember
1064 Banking El Salvador [Member] Member cib:BankingElSalvadorMember
1065 Banking Guatemala [Member] Member cib:BankingGuatemalaMember
1066 Trust [Member] Member cib:TrustMember
1067 Investment banking [Member] Member cib:InvestmentBankingMember
1068 Brokerage [Member] Member cib:BrokerageMember
1069 Off shore [Member] Member cib:OffShoreMember
1070 All other segments [Member] Member cib:AllOtherSegmentMember
1071 Operating segments [Line Items] LineItems cib:OperatingSegmentsLineItems
1072 Restructured loans that were transferred to foreclosed assets Concept (Monetary) As Of Credit cib:RestructuredLoansThatWereTransferredToForeclosedAssets
1073 Provisions Concept (Monetary) As Of Credit ifrs-full:Provisions
1074 1090 - Disclosure - OPERATING SEGMENTS (Details 4) Network

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http://www.grupobancolombia.com/role/OperatingSegmentsDetails4
1075 Operating segments [Table] Table

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*

cib:OperatingSegmentsTable
1076 Types of interest and valuation [Axis] Axis cib:TypesOfInterestAndValuationAxis
1077 Types of interest and valuation [Domain] Member cib:TypesOfInterestAndValuationDomain
1078 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
1079 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1080 Peru [Member] Member country:PE
1081 Puerto rico [Member] Member country:PR
1082 Costa Rica [Member] Member country:CR
1083 Panama [Member] Member country:PA
1084 Colombia [Member] Member country:CO
1085 Guatemala [Member] Member country:GT
1086 EL SALVADOR [Member] Member country:SV
1087 Segment consolidation items [axis] Axis ifrs-full:SegmentConsolidationItemsAxis
1088 Entity's total for segment consolidation items [member] Member ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
1089 Operating Segments [Member] Member ifrs-full:OperatingSegmentsMember
1090 Segment Reconciling Items [Member] Member ifrs-full:MaterialReconcilingItemsMember
1091 Operating segments [Line Items] LineItems cib:OperatingSegmentsLineItems
1092 Interest and valuation Concept (Monetary) For Period Credit ifrs-full:RevenueFromInterest
1093 Long-lived assets Concept (Monetary) As Of Debit cib:LonglivedAsset
1094 1091 - Disclosure - OPERATING SEGMENTS (Details Textual) Network

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http://www.grupobancolombia.com/role/OperatingSegmentsDetailsTextual
1095 Implied Table Table

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*

implied:Table
1096 Disclosure Of Operating Segment [Abstract] Abstract cib:DisclosureOfOperatingSegmentAbstract
1097 Other Segments Revenue Percent Concept (Percent) For Period cib:OtherSegmentsRevenuePercent
1098 Other Segments Assets Percent Concept (Percent) For Period cib:OtherSegmentsAssetsPercent
1099 1092 - Disclosure - CASH AND CASH EQUIVALENTS (Details) Network

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http://www.grupobancolombia.com/role/CashAndCashEquivalentsDetails
1100 Implied Table Table

*

*

implied:Table
1101 Disclosure of cash and cash equivalents [Abstract] Abstract cib:DisclosureOfCashAndCashEquivalentsAbstract
1102 Cash and balances at central bank Abstract cib:CashAndBankBalancesAtCentralBanksAbstract
1103 Cash Concept (Monetary) As Of Debit ifrs-full:CashOnHand
1104 Due from central banks Concept (Monetary) As Of Debit ifrs-full:BankBalancesAtCentralBanksOtherThanMandatoryReserveDeposits
1105 Due from other private financial entities Concept (Monetary) As Of Debit ifrs-full:ItemsInCourseOfCollectionFromOtherBanks
1106 Checks on hold Concept (Monetary) As Of Debit ifrs-full:OtherCashAndCashEquivalents
1107 Remittances of domestic negotiated checks in transit Concept (Monetary) As Of Debit ifrs-full:BankingArrangementsClassifiedAsCashEquivalents
1108 Total cash and due from banks Concept (Monetary) As Of Debit ifrs-full:Cash
1109 Money market transactions: Abstract cib:MoneyMarketTransactionsAbstract
1110 Inter bank borrowings Concept (Monetary) For Period Debit cib:InterbankAssets
1111 Reverse repurchase agreements and other similar secured loans Concept (Monetary) As Of Debit ifrs-full:ReverseRepurchaseAgreementsAndCashCollateralOnSecuritiesBorrowed
1112 Total money market transactions: Concept (Monetary) For Period Debit cib:MoneyMarketTransactions
1113 Total cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
1114 1093 - Disclosure - CASH AND CASH EQUIVALENTS (Details Textual) Network

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http://www.grupobancolombia.com/role/CashAndCashEquivalentsDetailsTextual
1115 cash and cash equivalents [Table] Table

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*

cib:CashAndCashEquivalentsTable
1116 Range [Axis] Axis ifrs-full:RangeAxis
1117 Ranges [member] Member ifrs-full:RangesMember
1118 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
1119 Top of range [member] Member ifrs-full:TopOfRangeMember
1120 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1121 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1122 FiduPeru S.A. Sociedad Fiduciaria [Member] Member cib:FiduperuSaSociedadFiduciariaMember
1123 Arrendamiento Operativo CIB S.A.C. [Member] Member cib:ArrendamientoOperativoCibSacMember
1124 Capital Investments SAFI S.A. [Member] Member cib:CapitalInvestmentsSafiSaMember
1125 Grupo Agromercantil Holding [Member] Member cib:GrupoAgromercantilHoldingMember
1126 Banco Agricola [Member] Member cib:BanagricolaSaMember
1127 Bancolombia Panama S.A. and Banistmo S.A [Member] Member cib:BancolombiaPanamaSaAndBanistmoSaMember
1128 Measurement [axis] Axis ifrs-full:MeasurementAxis
1129 Aggregated measurement [member] Member ifrs-full:AggregatedMeasurementMember
1130 Legal banking [Axis] Axis cib:LegalBankingAxis
1131 Legal banking [Domain] Member cib:LegalBankingDomain
1132 Mandatory reserve percentage in central bank [Member] Member cib:MandatoryReservePercentageInCentralBankMember
1133 cash and cash equivalent [Line Items] LineItems cib:CashAndCashEquivalentLineItems
1134 Mandatory reserve percentage in central bank Concept (Percent) As Of cib:MandatoryReservePercentageInCentralBank
1135 Restricted Cash and Cash Equivalents Concept (Monetary) As Of Debit ifrs-full:RestrictedCashAndCashEquivalents
1136 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
1137 1094 - Disclosure - FINANCIAL ASSETS INVESTMENTS AND DERIVATIVES (Details) Network

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http://www.grupobancolombia.com/role/FinancialAssetsInvestmentsAndDerivativesDetails
1138 Disclosure of financial assets investments and derivatives [Table] Table

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*

cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesTable
1139 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1140 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1141 Securities issued by the Colombian Government [Member] Member cib:SecuritiesIssuedByColombianGovernmentMember
1142 Securities issued by foreign governments [Member] Member cib:SecuritiesIssuedByForeignGovernmentsMember
1143 Securities issued by other financial institutions [Member] Member cib:SecuritiesIssuedByOtherFinancialInstitutionsMember
1144 Securities issued by government entities [Member] Member cib:SecuritiesIssuedByGovernmentEntitiesMember
1145 Corporate bonds [Member] Member cib:CorporateBondsMember
1146 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
1147 Assets [member] Member ifrs-full:ClassesOfAssetsMember
1148 Debt Securities [Member] Member ifrs-full:DebtSecuritiesMember
1149 Trading equity securities [member] Member ifrs-full:TradingEquitySecuritiesMember
1150 Financial assets investments [Member] Member cib:FinancialAssetsInvestmentsMember
1151 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
1152 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
1153 Financial assets at fair value through profit or loss, category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
1154 Financial assets at amortised cost, category [member] Member ifrs-full:FinancialAssetsAtAmortisedCostCategoryMember
1155 Financial assets at fair value through other comprehensive income, category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember
1156 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1157 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1158 Disclosure of financial assets investments and derivatives [Line Items] LineItems cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesLineItems
1159 Financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
1160 1095 - Disclosure - FINANCIAL ASSETS INVESTMENTS AND DERIVATIVES (Details 1) Network

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http://www.grupobancolombia.com/role/FinancialAssetsInvestmentsAndDerivativesDetails1
1161 Disclosure of financial assets investments and derivatives [Table] Table

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*

cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesTable
1162 Maturity [axis] Axis ifrs-full:MaturityAxis
1163 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1164 Less than 1 year [Member] Member ifrs-full:NotLaterThanOneYearMember
1165 Between 1 and 3 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanThreeYearsMember
1166 Between 3 and 5 years [member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFiveYearsMember
1167 Greater than 5 years [member] Member ifrs-full:LaterThanFiveYearsMember
1168 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1169 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1170 Securities issued by the Colombian Government [Member] Member cib:SecuritiesIssuedByColombianGovernmentMember
1171 Securities issued by Foreign Governments [Member] Member cib:SecuritiesIssuedByForeignGovernmentsMember
1172 Securities issued by other financial institutions [Member] Member cib:SecuritiesIssuedByOtherFinancialInstitutionsMember
1173 Securities issued by Government entities [Member] Member cib:SecuritiesIssuedByGovernmentEntitiesMember
1174 Corporate bonds [Member] Member cib:CorporateBondsMember
1175 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
1176 Assets [member] Member ifrs-full:ClassesOfAssetsMember
1177 Debt Securities [Member] Member ifrs-full:DebtSecuritiesMember
1178 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
1179 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
1180 Financial assets at fair value through profit or loss, category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
1181 Financial assets at amortised cost, category [member] Member ifrs-full:FinancialAssetsAtAmortisedCostCategoryMember
1182 Financial assets at fair value through other comprehensive income, category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember
1183 Disclosure of financial assets investments and derivatives [Line Items] LineItems cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesLineItems
1184 Financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
1185 1096 - Disclosure - FINANCIAL ASSETS INVESTMENTS AND DERIVATIVES (Details 2) Network

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http://www.grupobancolombia.com/role/FinancialAssetsInvestmentsAndDerivativesDetails2
1186 Disclosure of financial assets investments and derivatives [Table] Table

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*

cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesTable
1187 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
1188 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
1189 Financial assets at fair value through profit or loss, category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
1190 Financial assets at fair value through other comprehensive income, category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember
1191 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
1192 Assets [member] Member ifrs-full:ClassesOfAssetsMember
1193 Trading equity securities [member] Member ifrs-full:TradingEquitySecuritiesMember
1194 Disclosure of financial assets investments and derivatives [Line Items] LineItems cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesLineItems
1195 Financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
1196 1097 - Disclosure - FINANCIAL ASSETS INVESTMENTS AND DERIVATIVES (Details 3) Network

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http://www.grupobancolombia.com/role/FinancialAssetsInvestmentsAndDerivativesDetails3
1197 Disclosure of financial assets investments and derivatives [Table] Table

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*

cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesTable
1198 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
1199 Assets [member] Member ifrs-full:ClassesOfAssetsMember
1200 Trading equity securities [member] Member ifrs-full:TradingEquitySecuritiesMember
1201 Types of equity securities [Axis] Axis cib:TypesOfEquitySecuritiesAxis
1202 Types of equity securities [Domain] Member cib:TypesOfEquitySecuritiesDomain
1203 Listed In Colombia [Member] Member cib:ListedInColombiaMember
1204 Listed outside Colombia [Member] Member cib:ListedOutsideColombiaMember
1205 Legal Entities [Axis] Axis cib:LegalEntitiesAxis
1206 Legal Entities [Domain] Member cib:LegalEntitiesDomain
1207 TELERED [Member] Member cib:TELEREDMember
1208 Asociacin Gremial de Instituciones Financieras Credibanco SA [Member] Member cib:AsociacinGremialDeInstitucionesFinancierasCredibancoSAMember
1209 CIFI [Member] Member cib:CIFIMember
1210 Compaa De Procesamiento de Medios de Pago GuatemalaBahamas S A [Member] Member cib:CompaaDeProcesamientoDeMediosDePagoGuatemalaBahamasSAMember
1211 Transacciones y Transferencias S A [Member] Member cib:TransaccionesYTransferenciasSAMember
1212 CADENALCO [Member] Member cib:CADENALCOMember
1213 Deceval [Member] Member cib:DecevalMember
1214 Others [Member] Member cib:OthersMember
1215 Disclosure of financial assets investments and derivatives [Line Items] LineItems cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesLineItems
1216 Securities at fair value through OCI: Abstract ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeAbstract
1217 Total equity securities at fair value through OCI Concept (Monetary) As Of Debit ifrs-full:FairValueOfInvestmentsInEquityInstrumentsDesignatedAsMeasuredAtFairValueThroughOtherComprehensiveIncome
1218 1098 - Disclosure - FINANCIAL ASSETS INVESTMENTS AND DERIVATIVES (Details 4) Network

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http://www.grupobancolombia.com/role/FinancialAssetsInvestmentsAndDerivativesDetails4
1219 Disclosure of financial assets investments and derivatives [Table] Table

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*

cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesTable
1220 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
1221 Assets [member] Member ifrs-full:ClassesOfAssetsMember
1222 Stocks [Member] Member cib:StocksMember
1223 Bonds [Member] Member cib:BondMember
1224 TES Treasury Instruments [Member] Member cib:TESTreasuryInstrumentsMember
1225 CDT Member cib:CertificateOfDepositTimeMember
1226 Maturity [axis] Axis ifrs-full:MaturityAxis
1227 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1228 Greater 12 months Member ifrs-full:NotLaterThanOneYearMember
1229 Between 3 and 6 months Member ifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMember
1230 Between 6 and 12 months Member ifrs-full:LaterThanSixMonthsAndNotLaterThanOneYearMember
1231 Less than 3 months Member ifrs-full:NotLaterThanThreeMonthsMember
1232 Later Than Twelve Months [Member] Member cib:LaterThanTwelveMonthsMember
1233 Categories of financial liabilities [axis] Axis ifrs-full:CategoriesOfFinancialLiabilitiesAxis
1234 Financial liabilities, category [member] Member ifrs-full:FinancialLiabilitiesCategoryMember
1235 Investments pledged as collateral in repo operations [Member] Member cib:InvestmentsPledgedAsCollateralInRepoOperationsMember
1236 Investments pledged as collateral in derivative operations [Member] Member cib:InvestmentsPledgedAsCollateralInDerivativeOperationsMember
1237 Investments Pledged As Collateral In Money Market [Member] Member cib:InvestmentsPledgedAsCollateralInMoneyMarketMember
1238 Counterparties [axis] Axis ifrs-full:CounterpartiesAxis
1239 Counterparties [member] Member ifrs-full:CounterpartiesMember
1240 Other Financial Instituition [Member] Member cib:OtherFinancialInstituitionMember
1241 Disclosure of financial assets investments and derivatives [Line Items] LineItems cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesLineItems
1242 Total securities pledged as collateral Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities
1243 1099 - Disclosure - FINANCIAL ASSETS INVESTMENTS AND DERIVATIVES (Details 5) Network

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http://www.grupobancolombia.com/role/FinancialAssetsInvestmentsAndDerivativesDetails5
1244 Disclosure of financial assets investments and derivatives [Table] Table

*

*

cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesTable
1245 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
1246 Assets [member] Member ifrs-full:ClassesOfAssetsMember
1247 Debt Securities [Member] Member ifrs-full:DebtSecuritiesMember
1248 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
1249 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
1250 Financial Assets Measured At Amortized Cost And Fair Value Through Other Comprehensive Income [Member] Member cib:FinancialAssetsMeasuredAtAmortizedCostAndFairValueThroughOtherComprehensiveIncomeMember
1251 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
1252 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
1253 Stage One [Member] Member cib:StageOneMember
1254 Stage Two [Member] Member cib:StageTwoMember
1255 Disclosure of financial assets investments and derivatives [Line Items] LineItems cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesLineItems
1256 Beginning balance Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
1257 Transfers: Abstract cib:FinancialAssetsTransfersAbstract
1258 Transfer from Stage 2 to Stage 1 Concept (Monetary) For Period Credit cib:TransfersFromStageTwoToStageOne
1259 Change in measurement Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughChangesInModelsOrRiskParametersFinancialAssets
1260 Financial assets derecognized during the period other than write-offs Concept (Monetary) For Period Credit ifrs-full:DecreaseThroughDerecognitionFinancialAssets
1261 New financial assets purchased Concept (Monetary) For Period Debit ifrs-full:IncreaseThroughOriginationOrPurchaseFinancialAssets
1262 Valuation on investments and Write-offs Concept (Monetary) For Period Credit ifrs-full:DecreaseThroughWriteoffFinancialAssets
1263 Foreign exchange Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughForeignExchangeFinancialAssets
1264 Ending Balance Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
1265 1100 - Disclosure - FINANCIAL ASSETS INVESTMENTS AND DERIVATIVES (Details 6) Network

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http://www.grupobancolombia.com/role/FinancialAssetsInvestmentsAndDerivativesDetails6
1266 Disclosure of financial assets investments and derivatives [Table] Table

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*

cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesTable
1267 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1268 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1269 Forward contract [member] Member ifrs-full:ForwardContractMember
1270 Swap contract [member] Member ifrs-full:SwapContractMember
1271 Option contract [member] Member ifrs-full:OptionContractMember
1272 Hedging instruments [axis] Axis ifrs-full:HedgingInstrumentsAxis
1273 Hedging instruments [member] Member ifrs-full:HedgingInstrumentsMember
1274 Foreign exchange contracts [Member] Member cib:ForeignExchangeContractsMember
1275 Equity contracts [Member] Member cib:EquityContractsMember
1276 Interest rate contracts [Member] Member cib:InterestRateContractsMember
1277 Disclosure of financial assets investments and derivatives [Line Items] LineItems cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesLineItems
1278 Derivative financial assets Concept (Monetary) As Of Debit ifrs-full:DerivativeFinancialAssets
1279 Derivative financial liabilities Concept (Monetary) As Of Credit ifrs-full:DerivativeFinancialLiabilities
1280 Total, net Concept (Monetary) As Of Debit cib:DerivativeFinancialAssetsLiabilities
1281 1101 - Disclosure - FINANCIAL ASSETS INVESTMENTS AND DERIVATIVES (Details 7) Network

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http://www.grupobancolombia.com/role/FinancialAssetsInvestmentsAndDerivativesDetails7
1282 Disclosure of financial assets investments and derivatives [Table] Table

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*

cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesTable
1283 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
1284 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
1285 Financial assets at amortised cost, category [member] Member ifrs-full:FinancialAssetsAtAmortisedCostCategoryMember
1286 Financial assets measured at fair value through other comprehensive income, category [member] Member ifrs-full:FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeCategoryMember
1287 Type of measurement of expected credit losses [axis] Axis ifrs-full:TypeOfMeasurementOfExpectedCreditLossesAxis
1288 Type of measurement of expected credit losses [member] Member ifrs-full:TypeOfMeasurementOfExpectedCreditLossesMember
1289 12-month expected credit losses [member] Member ifrs-full:TwelvemonthExpectedCreditLossesMember
1290 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
1291 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
1292 Stage One [Member] Member cib:StageOneMember
1293 Stage Two [Member] Member cib:StageTwoMember
1294 Disclosure of financial assets investments and derivatives [Line Items] LineItems cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesLineItems
1295 Securities at amortized cost Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtAmortisedCost
1296 Carrying amount Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
1297 Loss allowance Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
1298 Securities at fair value through other comprehensive income Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
1299 1102 - Disclosure - FINANCIAL ASSETS INVESTMENTS AND DERIVATIVES (Details 8) Network

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http://www.grupobancolombia.com/role/FinancialAssetsInvestmentsAndDerivativesDetails8
1300 Disclosure of financial assets investments and derivatives [Table] Table

*

*

cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesTable
1301 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1302 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1303 Forward contract [member] Member ifrs-full:ForwardContractMember
1304 Swap contract [member] Member ifrs-full:SwapContractMember
1305 Option contract [member] Member ifrs-full:OptionContractMember
1306 Futures contract [member] Member ifrs-full:FuturesContractMember
1307 Hedging instruments [axis] Axis ifrs-full:HedgingInstrumentsAxis
1308 Hedging instruments [member] Member ifrs-full:HedgingInstrumentsMember
1309 Foreign exchange contracts Assets [Member] Member cib:ForeignExchangeContractsAssetsMember
1310 Equity contracts Assets [Member] Member cib:EquityContractsAssetsMember
1311 Asset Contracts [Member] Member cib:AssetContractsMember
1312 Liability Contracts [Member] Member cib:LiabilityContractsMember
1313 Interest Rate contracts Assets [Member] Member cib:InterestRateContractsAssetsMember
1314 Foreign exchange contracts Liabilities [Member] Member cib:ForeignExchangeContractsLiabilitiesMember
1315 Equity contracts Liabilities [Member] Member cib:EquityContractsLiabilitiesMember
1316 Interest Rate contracts Liabilities [Member] Member cib:InterestRateContractsLiabilitiesMember
1317 Disclosure of financial assets investments and derivatives [Line Items] LineItems cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesLineItems
1318 Derivatives Assets Concept (Monetary) As Of Debit ifrs-full:DerivativeFinancialAssets
1319 Derivative financial liabilities Concept (Monetary) As Of Credit ifrs-full:DerivativeFinancialLiabilities
1320 Derivative financial Assets liabilities Concept (Monetary) As Of Debit cib:DerivativeFinancialAssetsLiabilities
1321 1103 - Disclosure - FINANCIAL ASSETS INVESTMENTS AND DERIVATIVES (Details 9) Network

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http://www.grupobancolombia.com/role/FinancialAssetsInvestmentsAndDerivativesDetails9
1322 Disclosure of financial assets investments and derivatives [Table] Table

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*

cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesTable
1323 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
1324 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
1325 Stage One [Member] Member cib:StageOneMember
1326 Stage Two [Member] Member cib:StageTwoMember
1327 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
1328 Assets [member] Member ifrs-full:ClassesOfAssetsMember
1329 Debt Securities [Member] Member ifrs-full:DebtSecuritiesMember
1330 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
1331 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
1332 Financial Assets Measured At Amortized Cost And Fair Value Through Other Comprehensive Income [Member] Member cib:FinancialAssetsMeasuredAtAmortizedCostAndFairValueThroughOtherComprehensiveIncomeMember
1333 Disclosure of financial assets investments and derivatives [Line Items] LineItems cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesLineItems
1334 Beginning balance Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
1335 Net effect in loss allowance changes Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughOtherChangesAllowanceAccountForCreditLossesOfFinancialAssets
1336 Transfer to 12-Month ECL Concept (Monetary) For Period Credit cib:RepresentsIncreaseDecreaseThroughTransferToTwelveMonthsExpectedCreditLoss
1337 Transfer to lifetime ECL not credit-impaired Concept (Monetary) For Period Credit cib:IncreaseDecreaseThroughTransferToLifeTimeExpectedCreditLoss
1338 New debt instruments purchased Concept (Monetary) For Period ifrs-full:AdditionalAllowanceRecognisedInProfitOrLossAllowanceAccountForCreditLossesOfFinancialAssets
1339 Debt instruments that have been derecognized Concept (Monetary) For Period ifrs-full:ReversalAllowanceAccountForCreditLossesOfFinancialAssets
1340 Translation adjustment Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesAllowanceAccountForCreditLossesOfFinancialAssets
1341 Ending balance Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
1342 1104 - Disclosure - FINANCIAL ASSETS INVESTMENTS AND DERIVATIVES (Details 10) Network

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http://www.grupobancolombia.com/role/FinancialAssetsInvestmentsAndDerivativesDetails10
1343 Disclosure of financial assets investments and derivatives [Table] Table

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*

cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesTable
1344 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1345 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1346 Forward contract [member] Member ifrs-full:ForwardContractMember
1347 Swap contract [member] Member ifrs-full:SwapContractMember
1348 Option contract [member] Member ifrs-full:OptionContractMember
1349 Futures contract [member] Member ifrs-full:FuturesContractMember
1350 Maturity [axis] Axis ifrs-full:MaturityAxis
1351 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1352 Up to 1 year [member] Member ifrs-full:NotLaterThanOneYearMember
1353 From 1 to 3 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanThreeYearsMember
1354 Over 3 years [Member] Member cib:LaterThanThreeYearseMember
1355 Disclosure of financial assets investments and derivatives [Line Items] LineItems cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesLineItems
1356 Derivative financial assets Concept (Monetary) As Of Debit ifrs-full:DerivativeFinancialAssets
1357 Derivative financial liabilities Concept (Monetary) As Of Credit ifrs-full:DerivativeFinancialLiabilities
1358 Derivative financial Assets liabilities Concept (Monetary) As Of Debit cib:DerivativeFinancialAssetsLiabilities
1359 1105 - Disclosure - FINANCIAL ASSETS INVESTMENTS AND DERIVATIVES (Details 11) Network

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http://www.grupobancolombia.com/role/FinancialAssetsInvestmentsAndDerivativesDetails11
1360 Disclosure of financial assets investments and derivative [Table] Table

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*

cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativeTable
1361 Types of contracts [axis] Axis ifrs-full:TypesOfContractsAxis
1362 Types of contracts [member] Member ifrs-full:TypesOfContractsMember
1363 Derivatives Contracts [Member] Member cib:DerivativesContractsMember
1364 Disclosure of financial assets investments and derivative [Line Items] LineItems cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativeLineItems
1365 Collateral Concept (Monetary) As Of Credit ifrs-full:CashCollateralReceivedSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialAssets
1366 1106 - Disclosure - FINANCIAL ASSETS INVESTMENTS AND DERIVATIVES (Details 12) Network

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http://www.grupobancolombia.com/role/FinancialAssetsInvestmentsAndDerivativesDetails12
1367 Disclosure of financial assets investments and derivatives [Table] Table

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*

cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesTable
1368 Types of interest rates [axis] Axis ifrs-full:TypesOfInterestRatesAxis
1369 Interest rate types [member] Member ifrs-full:InterestRateTypesMember
1370 Fixed interest rate [member] Member ifrs-full:FixedInterestRateMember
1371 Disclosure of financial assets investments and derivatives [Line Items] LineItems cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesLineItems
1372 Carrying amount of hedged item Assets Concept (Monetary) As Of Debit ifrs-full:HedgedItemAssets
1373 Accumulated amount of fair value adjustments on the hedged item Assets Concept (Monetary) As Of Debit ifrs-full:AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountAssets
1374 Accumulated amount of fair value adjustments on the hedged item Liabilities Concept (Monetary) As Of Credit ifrs-full:AccumulatedFairValueHedgeAdjustmentOnHedgedItemIncludedInCarryingAmountLiabilities
1375 1107 - Disclosure - FINANCIAL ASSETS INVESTMENTS AND DERIVATIVES (Details 13) Network

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http://www.grupobancolombia.com/role/FinancialAssetsInvestmentsAndDerivativesDetails13
1376 Disclosure of financial assets investments and derivatives [Table] Table

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*

cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesTable
1377 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1378 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1379 Derivative Hedged Item [Member] Member cib:DerivativeHedgedItemMember
1380 External credit grades [axis] Axis ifrs-full:ExternalCreditGradesAxis
1381 Entity's total for external credit grades [member] Member ifrs-full:EntitysTotalForExternalCreditGradesMember
1382 Disclosure of financial assets investments and derivatives [Line Items] LineItems cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesLineItems
1383 Notional amount Concept (Monetary) As Of Debit cib:DerivativeAssetsLiabilitiesNet
1384 Fair value Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValue
1385 1108 - Disclosure - FINANCIAL ASSETS INVESTMENTS AND DERIVATIVES (Details 14) Network

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http://www.grupobancolombia.com/role/FinancialAssetsInvestmentsAndDerivativesDetails14
1386 Disclosure of financial assets investments and derivatives [Table] Table

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*

cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesTable
1387 Types of interest rates [axis] Axis ifrs-full:TypesOfInterestRatesAxis
1388 Interest rate types [member] Member ifrs-full:InterestRateTypesMember
1389 Fixed interest rate [member] Member ifrs-full:FixedInterestRateMember
1390 Disclosure of financial assets investments and derivatives [Line Items] LineItems cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesLineItems
1391 Gain (loss) on hedge ineffectiveness recognised in other comprehensive income Concept (Monetary) For Period Credit ifrs-full:GainLossOnHedgeIneffectivenessRecognisedInOtherComprehensiveIncome
1392 1109 - Disclosure - FINANCIAL ASSETS INVESTMENTS AND DERIVATIVES (Details 15) Network

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http://www.grupobancolombia.com/role/FinancialAssetsInvestmentsAndDerivativesDetails15
1393 Disclosure of financial assets investments and derivatives [Table] Table

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*

cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesTable
1394 Types of financial assets [axis] Axis ifrs-full:TypesOfFinancialAssetsAxis
1395 Financial assets, type [member] Member ifrs-full:FinancialAssetsTypeMember
1396 Foreign exchange contracts [Member] Member cib:ForeignExchangeContractsMember
1397 Interest rate contracts [Member] Member cib:InterestRateContractsMember
1398 Equity contracts [Member] Member cib:EquityContractsMember
1399 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1400 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1401 Swap contract [member] Member ifrs-full:SwapContractMember
1402 Forward contract [member] Member ifrs-full:ForwardContractMember
1403 Option contract [member] Member ifrs-full:OptionContractMember
1404 Disclosure of financial assets investments and derivatives [Line Items] LineItems cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesLineItems
1405 Derivatives Assets Concept (Monetary) As Of Debit ifrs-full:GrossFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1406 Deririvatives Liabilities Concept (Monetary) As Of Credit ifrs-full:GrossFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1407 Net derivatives in statement of financial position, Derivatives Assets Concept (Monetary) As Of Debit ifrs-full:NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition
1408 Net derivatives in statement of financial position, Deririvatives Liabilities Concept (Monetary) As Of Credit ifrs-full:NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition
1409 Master netting agreements, Derivatives Assets Concept (Monetary) As Of Credit ifrs-full:FinancialInstrumentsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialAssets
1410 Master netting agreements, Deririvatives Liabilities Concept (Monetary) As Of Debit ifrs-full:FinancialInstrumentsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialLiabilities
1411 Cash collateral received/paid, Derivatives Assets Concept (Monetary) As Of Credit ifrs-full:CashCollateralReceivedSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialAssets
1412 Cash collateral received/paid, Deririvatives Liabilities Concept (Monetary) As Of Debit ifrs-full:CashCollateralPledgedSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialLiabilities
1413 Total derivatives assetss/ liabilities, Deririvatives Liabilities Concept (Monetary) As Of Debit ifrs-full:NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1414 Total derivatives assetss/ liabilities, Deririvatives Liabilities Concept (Monetary) As Of Credit ifrs-full:NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1415 1110 - Disclosure - FINANCIAL ASSETS INVESTMENTS AND DERIVATIVES (Details 16) Network

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http://www.grupobancolombia.com/role/FinancialAssetsInvestmentsAndDerivativesDetails16
1416 Statement [Table] Table

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*

us-gaap:StatementTable
1417 Class of Stock [Axis] Axis us-gaap:StatementClassOfStockAxis
1418 Class of Stock [Domain] Member us-gaap:ClassOfStockDomain
1419 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
1420 Assets [member] Member ifrs-full:ClassesOfAssetsMember
1421 Debt Securities [Member] Member ifrs-full:DebtSecuritiesMember
1422 Measurement [axis] Axis ifrs-full:MeasurementAxis
1423 Aggregated measurement [member] Member ifrs-full:AggregatedMeasurementMember
1424 Measurement Under IFRS 9 2013 [Member] Member cib:MeasurementUnderIFRS92013Member
1425 Measurement Under IFRS 9 2014 [Member] Member cib:MeasurementUnderIFRS92014Member
1426 Difference [Member] Member cib:DifferenceMember
1427 Statement [Line Items] LineItems us-gaap:StatementLineItems
1428 Financial assets at fair value through profit or loss Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLoss
1429 Financial assets at amortised cost Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtAmortisedCost
1430 Financial assets at fair value through other comprehensive income Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncome
1431 Financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
1432 1111 - Disclosure - FINANCIAL ASSETS INVESTMENTS AND DERIVATIVES (Details Textual) Network

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http://www.grupobancolombia.com/role/FinancialAssetsInvestmentsAndDerivativesDetailsTextual
1433 Disclosure of financial assets investments and derivatives [Table] Table

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*

cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesTable
1434 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
1435 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
1436 Financial assets at fair value through profit or loss, category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
1437 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
1438 Assets [member] Member ifrs-full:ClassesOfAssetsMember
1439 Trading equity securities [member] Member ifrs-full:TradingEquitySecuritiesMember
1440 Financial assets investments [member] Member cib:FinancialAssetsInvestmentsMember
1441 Types of hedges [axis] Axis ifrs-full:TypesOfHedgesAxis
1442 Hedges [member] Member ifrs-full:TypesOfHedgesMember
1443 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
1444 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
1445 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1446 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1447 Capital Investments SAFI S.A. [member] Member cib:CapitalInvestmentsSafiSaMember
1448 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1449 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1450 Mortgage Backed Security [member] Member cib:MortgageBackedSecurityMember
1451 Legal Entities [Axis] Axis cib:LegalEntitiesAxis
1452 Legal Entities [Domain] Member cib:LegalEntitiesDomain
1453 CDPQ [Member] Member cib:CDPQMember
1454 Disclosure of financial assets investments and derivatives [Line Items] LineItems cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesLineItems
1455 Financial assets available-for-sale Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAvailableforsale
1456 Other comprehensive income, net of tax, financial assets measured at fair value through other comprehensive income Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
1457 Dividends received from investments accounted for using equity method, classified as investing activities Concept (Monetary) For Period Debit ifrs-full:DividendsReceivedFromInvestmentsAccountedForUsingEquityMethodClassifiedAsInvestingActivities
1458 Gains (losses) on cash flow hedges, net of tax Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnCashFlowHedgesNetOfTax
1459 Gains (losses) on hedges of net investments in foreign operations, net of tax Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsNetOfTax
1460 Gain on Disposal of Business Concept (Monetary) For Period Credit cib:GainOnDisposalOfBusiness
1461 Retained earnings Concept (Monetary) As Of Credit ifrs-full:RetainedEarnings
1462 Current held-to-maturity investments Concept (Monetary) As Of Debit ifrs-full:CurrentHeldtomaturityInvestments
1463 Financial Assets Investments And Derivative Financial Instruments Concept (Monetary) As Of Debit cib:FinancialAssetsInvestmentsAndDerivativeFinancialInstruments
1464 Financial assets at fair value through profit or loss Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLoss
1465 Financial assets at amortised cost Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtAmortisedCost
1466 Increase In Financial Assets At Fair Value Through Profit Or Loss Concept (Monetary) As Of Debit cib:IncreaseInFinancialAssetsAtFairValueThroughProfitOrLoss
1467 1112 - Disclosure - LOANS AND ADVANCES TO CUSTOMERS AND FINANCIAL INSTITUTIONS, NET (Details) Network

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http://www.grupobancolombia.com/role/LoansAndAdvancesToCustomersAndFinancialInstitutionsNetDetails
1468 Disclosure Of Loans And Advances To Customers Explanatory [Table] Table

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cib:DisclosureOfLoansAndAdvancesToCustomersExplanatoryTable
1469 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
1470 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
1471 Commercial [Member] Member cib:CommercialMember
1472 Consumer loans [member] Member ifrs-full:ConsumerLoansMember
1473 Mortage [Member] Member cib:MortageMember
1474 Financial leases [Member] Member cib:FinancialLeasesMember
1475 Small Business Loans [Member] Member cib:SmallBusinessLoansMember
1476 Disclosure Of Loans And Advances To Customers Explanatory [Line Items] LineItems cib:DisclosureOfLoansAndAdvancesToCustomersExplanatoryLineItems
1477 Total gross loans and Financial Leases Concept (Monetary) As Of Debit ifrs-full:DebtInstrumentsHeld
1478 Total allowance Concept (Monetary) As Of Credit cib:AllowanceForLoansAndAdvancesLeaseLosses
1479 Total Net Loans and financial leases Concept (Monetary) As Of Debit ifrs-full:LoansAndAdvancesToCustomers
1480 1113 - Disclosure - LOANS AND ADVANCES TO CUSTOMERS AND FINANCIAL INSTITUTIONS, NET (Details 1) Network

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http://www.grupobancolombia.com/role/LoansAndAdvancesToCustomersAndFinancialInstitutionsNetDetails1
1481 Disclosure Of Loans And Advances To Customers Explanatory [Table] Table

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cib:DisclosureOfLoansAndAdvancesToCustomersExplanatoryTable
1482 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
1483 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
1484 Commercial [member] Member cib:CommercialMember
1485 Consumer loans [member] Member ifrs-full:ConsumerLoansMember
1486 Mortage [member] Member cib:MortageMember
1487 Financial leases [member] Member cib:FinancialLeasesMember
1488 Small Business Loans [member] Member cib:SmallBusinessLoansMember
1489 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1490 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1491 Compania de financiamiento Tuya S.A [Member] Member cib:CompaniaDeFinanciamientoTuyaSaMember
1492 Disclosure Of Loans And Advances To Customers Explanatory [Line Items] LineItems cib:DisclosureOfLoansAndAdvancesToCustomersExplanatoryLineItems
1493 Beginning balance Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
1494 Net effect in loss allowance changes Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughOtherChangesAllowanceAccountForCreditLossesOfFinancialAssets
1495 Provisions for loan losses Concept (Monetary) For Period ifrs-full:AdditionalAllowanceRecognisedInProfitOrLossAllowanceAccountForCreditLossesOfFinancialAssets
1496 Charges-off Concept (Monetary) For Period Debit ifrs-full:UtilisationAllowanceAccountForCreditLossesOfFinancialAssets
1497 Recoveries Concept (Monetary) For Period ifrs-full:ReversalAllowanceAccountForCreditLossesOfFinancialAssets
1498 Translation adjustment Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughAdjustmentsArisingFromPassageOfTimeAllowanceAccountForCreditLossesOfFinancialAssets
1499 Ending balance Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
1500 Effect of adoption of IFRS 9 Concept (Monetary) For Period Credit cib:IncreaseDecreaseInAllowanceForAllowanceAccountForCreditLossesOfFinancialAssetsResultingFromAdoptionOfIFRS9
1501 Loan purchases / Loan sales Concept (Monetary) For Period Credit cib:IncreaseDecreaseInAllowanceForAllowanceAccountForCreditLossesOfFinancialAssetsResultingFromSaleAndPurchaseOfLoans
1502 Adjusted stage 3 Concept (Monetary) For Period Credit cib:IncreaseDecreaseInAllowanceForAllowanceAccountForCreditLossesOfFinancialAssetsResultingFromAdjustmentsForStage3
1503 1114 - Disclosure - LOANS AND ADVANCES TO CUSTOMERS AND FINANCIAL INSTITUTIONS, NET (Details 2) Network

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http://www.grupobancolombia.com/role/LoansAndAdvancesToCustomersAndFinancialInstitutionsNetDetails2
1504 Disclosure Of Loans And Advances To Customers Explanatory [Table] Table

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*

cib:DisclosureOfLoansAndAdvancesToCustomersExplanatoryTable
1505 Maturity [axis] Axis ifrs-full:MaturityAxis
1506 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1507 Within 1 year [member] Member ifrs-full:LaterThanOneYearMember
1508 Over 1 year, but less than 5 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
1509 Over 5 years [member] Member ifrs-full:LaterThanFiveYearsMember
1510 Disclosure Of Loans And Advances To Customers Explanatory [Line Items] LineItems cib:DisclosureOfLoansAndAdvancesToCustomersExplanatoryLineItems
1511 Gross investment in finance lease Concept (Monetary) As Of Debit ifrs-full:GrossInvestmentInFinanceLease
1512 Minimum lease payments of other arrangements that do not include payments for non-lease elements Concept (Monetary) As Of Credit ifrs-full:MinimumLeasePaymentsOfOtherArrangementsThatDoNotIncludePaymentsForNonleaseElements
1513 Unearned finance income on finance lease Concept (Monetary) As Of Debit ifrs-full:UnearnedFinanceIncomeOnFinanceLease
1514 Minimum finance lease payments receivable, at present value Concept (Monetary) As Of Debit ifrs-full:MinimumFinanceLeasePaymentsReceivableAtPresentValue
1515 Minimum lease payments receivable under non-cancellable operating lease Concept (Monetary) As Of Debit ifrs-full:MinimumLeasePaymentsReceivableUnderNoncancellableOperatingLease
1516 Net investment in finance lease Concept (Monetary) As Of Debit ifrs-full:NetInvestmentInFinanceLease
1517 Present value of paymnent recievables Concept (Monetary) As Of Credit cib:PresentValueOfPaymnentRecievables
1518 Minimum noncollectable payments impairmentat present value Concept (Monetary) As Of Credit cib:MinimumNoncollectablePaymentsImpairmentatPresentValue
1519 Minimum finance lease payments payable, at present value Concept (Monetary) As Of Credit ifrs-full:MinimumFinanceLeasePaymentsPayableAtPresentValue
1520 Total present value of minimum payments Concept (Monetary) As Of Credit cib:TotalPresentValueOfMinimumPayments
1521 1115 - Disclosure - LOANS AND ADVANCES TO CUSTOMERS AND FINANCIAL INSTITUTIONS, NET (Details 3) Network

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http://www.grupobancolombia.com/role/LoansAndAdvancesToCustomersAndFinancialInstitutionsNetDetails3
1522 Disclosure Of Loans And Advances To Customers Explanatory [Table] Table

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*

cib:DisclosureOfLoansAndAdvancesToCustomersExplanatoryTable
1523 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
1524 Property, Plant and Equipment [Member] Member ifrs-full:PropertyPlantAndEquipmentMember
1525 Machinery [member] Member ifrs-full:MachineryMember
1526 Automobile [member] Member cib:AutomobileMember
1527 Furniture and fixtures [member] Member ifrs-full:FixturesAndFittingsMember
1528 Technology [Member] Member cib:TechnologyMember
1529 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
1530 Assets [member] Member ifrs-full:ClassesOfAssetsMember
1531 Disclosure Of Loans And Advances To Customers Explanatory [Line Items] LineItems cib:DisclosureOfLoansAndAdvancesToCustomersExplanatoryLineItems
1532 Unsecured residual values Concept (Monetary) As Of Credit cib:UnsecuredResidualValues
1533 1116 - Disclosure - LOANS AND ADVANCES TO CUSTOMERS AND FINANCIAL INSTITUTIONS, NET (Details 4) Network

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http://www.grupobancolombia.com/role/LoansAndAdvancesToCustomersAndFinancialInstitutionsNetDetails4
1534 Disclosure Of Loans And Advances To Customers Explanatory [Table] Table

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*

cib:DisclosureOfLoansAndAdvancesToCustomersExplanatoryTable
1535 Maturity [axis] Axis ifrs-full:MaturityAxis
1536 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1537 Within 1 year [member] Member ifrs-full:NotLaterThanOneYearMember
1538 Over 1 year, but less than 5 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
1539 Over 5 years [member] Member ifrs-full:LaterThanFiveYearsMember
1540 Disclosure Of Loans And Advances To Customers Explanatory [Line Items] LineItems cib:DisclosureOfLoansAndAdvancesToCustomersExplanatoryLineItems
1541 Minimum Payments Under Operating Leases Concept (Monetary) As Of Credit cib:MinimumPaymentsUnderOperatingLeases
1542 1117 - Disclosure - LOANS AND ADVANCES TO CUSTOMERS AND FINANCIAL INSTITUTIONS, NET (Details 5) Network

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http://www.grupobancolombia.com/role/LoansAndAdvancesToCustomersAndFinancialInstitutionsNetDetails5
1543 Disclosure Of Loans And Advances To Customers Explanatory [Table] Table

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*

cib:DisclosureOfLoansAndAdvancesToCustomersExplanatoryTable
1544 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
1545 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
1546 Stage One [Member] Member cib:StageOneMember
1547 Stage Two [Member] Member cib:StageTwoMember
1548 Stage Three [Member] Member cib:StageThreeMember
1549 Disclosure Of Loans And Advances To Customers Explanatory [Line Items] LineItems cib:DisclosureOfLoansAndAdvancesToCustomersExplanatoryLineItems
1550 Total loans to Financial institutions Concept (Monetary) As Of Debit ifrs-full:LoansAndAdvancesToBanks
1551 Allowance Concept (Monetary) As Of Credit cib:LoansToFinancialInstitutionsAllowance
1552 Total Net Loans with financial institutions Concept (Monetary) As Of Debit cib:LoansAndAdvancesToBanksNet
1553 1118 - Disclosure - LOANS AND ADVANCES TO CUSTOMERS AND FINANCIAL INSTITUTIONS, NET (Details 6) Network

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http://www.grupobancolombia.com/role/LoansAndAdvancesToCustomersAndFinancialInstitutionsNetDetails6
1554 Disclosure Of Loans And Advances To Customers Explanatory [Table] Table

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*

cib:DisclosureOfLoansAndAdvancesToCustomersExplanatoryTable
1555 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
1556 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
1557 Stage One [Member] Member cib:StageOneMember
1558 Stage Two [Member] Member cib:StageTwoMember
1559 Stage Three [Member] Member cib:StageThreeMember
1560 Method of assessment of expected credit losses [axis] Axis ifrs-full:MethodOfAssessmentOfExpectedCreditLossesAxis
1561 Method of assessment of expected credit losses [member] Member ifrs-full:MethodOfAssessmentOfExpectedCreditLossesMember
1562 Simplified Methodology [Member] Member cib:SimplifiedMethodologyMember
1563 Disclosure Of Loans And Advances To Customers Explanatory [Line Items] LineItems cib:DisclosureOfLoansAndAdvancesToCustomersExplanatoryLineItems
1564 Beginning balance Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
1565  Transfer to Stage 1 Concept (Monetary) For Period Debit cib:TransferToStageOne
1566 Transfer to Stage 2 Concept (Monetary) For Period Debit cib:TransferToStageTwo
1567 Transfer to Stage 3 Concept (Monetary) For Period Debit cib:TransferToStageThree
1568 Net remeasurement of loss allowance Concept (Monetary) As Of Credit cib:NetRemeasuredAllowanceAfterTransfers
1569 New financial assets purchased/originated Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughOtherChangesAllowanceAccountForCreditLossesOfFinancialAssets
1570 Financial assets that have been derecognized Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughAdjustmentsArisingFromPassageOfTimeAllowanceAccountForCreditLossesOfFinancialAssets
1571 Charges-off Concept (Monetary) For Period Debit ifrs-full:UtilisationAllowanceAccountForCreditLossesOfFinancialAssets
1572 Foreign Exchange and other movements Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesAllowanceAccountForCreditLossesOfFinancialAssets
1573 Ending balance Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
1574 1119 - Disclosure - LOANS AND ADVANCES TO CUSTOMERS AND FINANCIAL INSTITUTIONS, NET (Details Textual) Network

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http://www.grupobancolombia.com/role/LoansAndAdvancesToCustomersAndFinancialInstitutionsNetDetailsTextual
1575 Disclosure Of Loans And Advances To Customers Explanatory [Table] Table

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*

cib:DisclosureOfLoansAndAdvancesToCustomersExplanatoryTable
1576 Grupo Agromercantil Holding [Axis] Axis cib:GrupoAgromercantilHoldingAxis
1577 Grupo Agromercantil Holding [Domain] Member cib:GrupoAgromercantilHoldingDomain
1578 Financiamiento Tuya S.A [Axis] Axis cib:FinanciamientoTuyaSaAxis
1579 Financiamiento Tuya S.A. [Domain] Member cib:FinanciamientoTuyaSaDomain
1580 Impairment Charges [Axis] Axis cib:ImpairmentChargesAxis
1581 Impairment Charges [Domain] Member cib:ImpairmentChargesDomain
1582 Credit impairment charges [Axis] Axis cib:CreditImpairmentChargesAxis
1583 Credit impairment charges [Domain] Member cib:CreditImpairmentChargesDomain
1584 Credit impairment charges [member] Member cib:CreditImpairmentChargesMember
1585 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
1586 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
1587 Stage One [Member] Member cib:StageOneMember
1588 Stage Two [Member] Member cib:StageTwoMember
1589 Stage Three [Member] Member cib:StageThreeMember
1590 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
1591 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
1592 Loans and receivables, category [member] Member ifrs-full:LoansAndReceivablesCategoryMember
1593 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1594 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1595 Compania de financiamiento Tuya S.A [Member] Member cib:CompaniaDeFinanciamientoTuyaSaMember
1596 Range [Axis] Axis ifrs-full:RangeAxis
1597 Ranges [member] Member ifrs-full:RangesMember
1598 Type of measurement of expected credit losses [axis] Axis ifrs-full:TypeOfMeasurementOfExpectedCreditLossesAxis
1599 Type of measurement of expected credit losses [member] Member ifrs-full:TypeOfMeasurementOfExpectedCreditLossesMember
1600 12-month expected credit losses [member] Member ifrs-full:TwelvemonthExpectedCreditLossesMember
1601 Lifetime expected credit losses [member] Member ifrs-full:LifetimeExpectedCreditLossesMember
1602 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1603 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1604 Infra Structure Advances [Member] Member cib:InfraStructureAdvancesMember
1605 Disclosure Of Loans And Advances To Customers Explanatory [Line Items] LineItems cib:DisclosureOfLoansAndAdvancesToCustomersExplanatoryLineItems
1606 Reversal, allowance account for credit losses of financial assets Concept (Monetary) For Period ifrs-full:ReversalAllowanceAccountForCreditLossesOfFinancialAssets
1607 Loans and advances to banks Concept (Monetary) As Of Debit ifrs-full:LoansAndAdvancesToBanks
1608 Allowance account for credit losses of financial assets Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
1609 Impairment loss recognised in profit or loss Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossRecognisedInProfitOrLoss
1610 Increase (decrease) in exposure to credit risk on loan commitments and financial guarantee contracts Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseInExposureToCreditRiskOnLoanCommitmentsAndFinancialGuaranteeContracts
1611 Increase (decrease) in allowance account for credit losses of financial assets Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseInAllowanceAccountForCreditLossesOfFinancialAssets
1612 Increase through origination or purchase, exposure to credit risk on loan commitments and financial guarantee contracts Concept (Monetary) For Period Credit ifrs-full:IncreaseThroughOriginationOrPurchaseExposureToCreditRiskOnLoanCommitmentsAndFinancialGuaranteeContracts
1613 Decrease through derecognition, financial assets Concept (Monetary) For Period Credit ifrs-full:DecreaseThroughDerecognitionFinancialAssets
1614 Increase through origination or purchase, financial assets Concept (Monetary) For Period Debit ifrs-full:IncreaseThroughOriginationOrPurchaseFinancialAssets
1615 Decrease through write-off, financial assets Concept (Monetary) For Period Credit ifrs-full:DecreaseThroughWriteoffFinancialAssets
1616 Utilisation, allowance account for credit losses of financial assets Concept (Monetary) For Period Debit ifrs-full:UtilisationAllowanceAccountForCreditLossesOfFinancialAssets
1617 1120 - Disclosure - INVESTMENTS IN ASSOCIATES AND JOINT VENTURES (Details) Network

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http://www.grupobancolombia.com/role/InvestmentsInAssociatesAndJointVenturesDetails
1618 Implied Table Table

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implied:Table
1619 Disclosure Of Interests In Other Entities Explanatory [Abstract] Abstract cib:DisclosureOfInterestsInOtherEntitiesExplanatoryAbstract
1620 Investments in associates Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociates
1621 Investments in Joint ventures Concept (Monetary) As Of Debit ifrs-full:InvestmentsInJointVentures
1622 Total Concept (Monetary) As Of Debit ifrs-full:InvestmentsInSubsidiariesJointVenturesAndAssociates
1623 1121 - Disclosure - INVESTMENTS IN ASSOCIATES AND JOINT VENTURES (Details 1) Network

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http://www.grupobancolombia.com/role/InvestmentsInAssociatesAndJointVenturesDetails1
1624 Disclosure Of Interests In Other Entities Explanatory [Table] Table

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cib:DisclosureOfInterestsInOtherEntitiesExplanatoryTable
1625 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
1626 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
1627 Proteccion S.A. [Member] Member cib:ProteccionSaMember
1628 PA Viva Malls [Member] Member cib:PaVivaMallsMember
1629 Titularizadora Colombiana S.A. Hitos [Member] Member cib:TitularizadoraColombianaSaHitosMember
1630 Redeban Multicolor S.A. [Member] Member cib:RedebanMulticolorSaMember
1631 Avefarma S.A.S [Member] Member cib:AvefarmaSasMember
1632 Panamerican Pharmaceutical Holding Inc. [Member] Member cib:PanamericanPharmaceuticalHoldingIncMember
1633 Internacional Ejecutiva de Aviacion S.A.S. [Member] Member cib:InternacionalEjecutivaDeAviacionSasMember
1634 Reintegra S.A.S. [Member] Member cib:ReintegraSasMember
1635 ACH Colombia S.A. [Member] Member cib:AchColombiaSaMember
1636 Concesiones CCFC S.A. [Member] Member cib:ConcesionesCcfcSaMember
1637 Servicio Salvadoreno de Proteccion, S. A. de C.V. [Member] Member cib:ServicioSalvadorenoDeProteccionSADeCvMember
1638 Servicios Financieros, S.A. de C.V. [Member] Member cib:ServiciosFinancierosSaDeCvMember
1639 Glassfarma Tech S.A.S [Member] Member cib:GlassfarmaTechSasMember
1640 ACH de El Salvador, S. A. de C.V. [Member] Member cib:AchDeElSalvadorSADeCvMember
1641 Disclosure Of Interests In Other Entities Explanatory [Line Items] LineItems cib:DisclosureOfInterestsInOtherEntitiesExplanatoryLineItems
1642 Principal Business Of Associate Concept (Text/String) For Period cib:PrincipalBusinessOfAssociate
1643 Principal place of business of associate Concept (Text/String) For Period ifrs-full:PrincipalPlaceOfBusinessOfAssociate
1644 Proportion of ownership interest in associate Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInAssociate
1645 Accumulated other comprehensive income Concept (Monetary) As Of Credit ifrs-full:AccumulatedOtherComprehensiveIncome
1646 Share of other comprehensive income of associates and joint ventures accounted for using equity method that will be reclassified to profit or loss, net of tax Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossNetOfTax
1647 Other comprehensive income, net of tax, exchange differences on translation Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation
1648 Investments in associates Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociates
1649 Share of profit (loss) from continuing operations of associates and joint ventures accounted for using equity method Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfContinuingOperationsOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
1650 Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss
1651 1122 - Disclosure - INVESTMENTS IN ASSOCIATES AND JOINT VENTURES (Details 2) Network

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http://www.grupobancolombia.com/role/InvestmentsInAssociatesAndJointVenturesDetails2
1652 Disclosure Of Interests In Other Entities Explanatory [Table] Table

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cib:DisclosureOfInterestsInOtherEntitiesExplanatoryTable
1653 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
1654 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
1655 Proteccion S.A. [Member] Member cib:ProteccionSaMember
1656 Titularizadora Colombiana S.A. Hitos [Member] Member cib:TitularizadoraColombianaSaHitosMember
1657 PA Viva Malls [Member] Member cib:PaVivaMallsMember
1658 Disclosure Of Interests In Other Entities Explanatory [Line Items] LineItems cib:DisclosureOfInterestsInOtherEntitiesExplanatoryLineItems
1659 Assets Concept (Monetary) As Of Debit ifrs-full:Assets
1660 Liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
1661 Income from ordinary activities Concept (Monetary) For Period Credit ifrs-full:Revenue
1662 Profits (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperations
1663 Dividends Concept (Monetary) For Period Debit ifrs-full:DividendsReceived
1664 1123 - Disclosure - INVESTMENTS IN ASSOCIATES AND JOINT VENTURES (Details 3) Network

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http://www.grupobancolombia.com/role/InvestmentsInAssociatesAndJointVenturesDetails3
1665 Disclosure Of Interests In Other Entities Explanatory [Table] Table

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cib:DisclosureOfInterestsInOtherEntitiesExplanatoryTable
1666 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
1667 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
1668 Compania de financiamiento Tuya S.A [Member] Member cib:CompaniaDeFinanciamientoTuyaSaMember
1669 Fideicomiso Ruta del Sol - compartimento A [Member] Member cib:FideicomisoRutaDelSolCompartimentoMember
1670 Servicios de Aceptacion S.A [Member] Member cib:ServiciosDeAceptacionSaMember
1671 Puntos Colombia S.A.S [Member] Member cib:PuntosColombiaSasMember
1672 PA Servicios Tecnolgicos Arus Bancolombia [Member] Member cib:PAServiciosTecnolgicosArusBancolombiaMember
1673 Disclosure Of Interests In Other Entities Explanatory [Line Items] LineItems cib:DisclosureOfInterestsInOtherEntitiesExplanatoryLineItems
1674 Principal Business of Joint Venture Concept (Text/String) For Period cib:PrincipalBusinessOfJointVenture
1675 Principal place of business of joint venture Concept (Text/String) For Period ifrs-full:PrincipalPlaceOfBusinessOfJointVenture
1676 Proportion of ownership interest in joint venture Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInJointVenture
1677 Share of other comprehensive income of associates and joint ventures accounted for using equity method, net of tax Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
1678 Accumulated other comprehensive income Concept (Monetary) As Of Credit ifrs-full:AccumulatedOtherComprehensiveIncome
1679 Share of profit (loss) from continuing operations of associates and joint ventures accounted for using equity method Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfContinuingOperationsOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
1680 Investments in joint ventures Concept (Monetary) As Of Debit ifrs-full:InvestmentsInJointVentures
1681 1124 - Disclosure - INVESTMENTS IN ASSOCIATES AND JOINT VENTURES (Details 4) Network

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http://www.grupobancolombia.com/role/InvestmentsInAssociatesAndJointVenturesDetails4
1682 Disclosure Of Interests In Other Entities Explanatory [Table] Table

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cib:DisclosureOfInterestsInOtherEntitiesExplanatoryTable
1683 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
1684 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
1685 Compania de financiamiento Tuya S.A [Member] Member cib:CompaniaDeFinanciamientoTuyaSaMember
1686 Disclosure Of Interests In Other Entities Explanatory [Line Items] LineItems cib:DisclosureOfInterestsInOtherEntitiesExplanatoryLineItems
1687 Assets Concept (Monetary) As Of Debit ifrs-full:Assets
1688 Liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
1689 Income from ordinary activities Concept (Monetary) For Period Credit ifrs-full:Revenue
1690 Profits (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperations
1691 Dividends Concept (Monetary) For Period Debit ifrs-full:DividendsReceived
1692 1125 - Disclosure - INVESTMENTS IN ASSOCIATES AND JOINT VENTURES (Details Textual) Network

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http://www.grupobancolombia.com/role/InvestmentsInAssociatesAndJointVenturesDetailsTextual
1693 Disclosure Of Interests In Other Entities Explanatory [Table] Table

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cib:DisclosureOfInterestsInOtherEntitiesExplanatoryTable
1694 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
1695 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
1696 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
1697 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
1698 Fideicomiso Ruta del Sol - Compartimiento A [Member] Member cib:FideicomisoRutaDelSolCompartimientoMember
1699 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
1700 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
1701 Disclosure Of Interests In Other Entities Explanatory [Line Items] LineItems cib:DisclosureOfInterestsInOtherEntitiesExplanatoryLineItems
1702 Share of other comprehensive income of associates and joint ventures accounted for using equity method that will be reclassified to profit or loss, net of tax Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossNetOfTax
1703 Adjustments for undistributed profits of investments accounted for using equity method Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod
1704 Other comprehensive income, before tax, exchange differences on translation Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxExchangeDifferencesOnTranslation
1705 Dividends received from associates, classified as investing activities Concept (Monetary) For Period Debit ifrs-full:DividendsReceivedFromAssociatesClassifiedAsInvestingActivities
1706 Estimated financial effect of contingent liabilities Concept (Monetary) As Of ifrs-full:EstimatedFinancialEffectOfContingentLiabilities
1707 1126 - Disclosure - GOODWILL AND INTANGIBLE ASSETS, NET (Details) Network

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http://www.grupobancolombia.com/role/GoodwillAndIntangibleAssetsNetDetails
1708 Implied Table Table

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implied:Table
1709 Disclosure of detailed information about intangible assets [abstract] Abstract ifrs-full:DisclosureOfIntangibleAssetsAbstract
1710 Intangible assets Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsOtherThanGoodwill
1711 Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
1712 Total Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
1713 1127 - Disclosure - GOODWILL AND INTANGIBLE ASSETS, NET (Details 1) Network

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http://www.grupobancolombia.com/role/GoodwillAndIntangibleAssetsNetDetails1
1714 Disclosure of detailed information about intangible assets [table] Table

*

*

ifrs-full:DisclosureOfIntangibleAssetsTable
1715 Classes of intangible assets other than goodwill [axis] Axis ifrs-full:ClassesOfIntangibleAssetsOtherThanGoodwillAxis
1716 Intangible assets other than goodwill [member] Member ifrs-full:IntangibleAssetsOtherThanGoodwillMember
1717 Trademarks [member] Member cib:TrademarkMember
1718 Licenses, software and computer applications [member] Member ifrs-full:ComputerSoftwareMember
1719 Client relationships [member] Member ifrs-full:CustomerrelatedIntangibleAssetsMember
1720 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1721 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1722 Gross carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
1723 Accumulated depreciation and amortisation [member] Member ifrs-full:AccumulatedDepreciationAndAmortisationMember
1724 Disclosure of detailed information about intangible assets [line items] LineItems ifrs-full:DisclosureOfIntangibleAssetsLineItems
1725 Intangible assets at beginning period Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsOtherThanGoodwill
1726 Acquisitions Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill
1727 Write off Concept (Monetary) For Period Credit ifrs-full:RetirementsIntangibleAssetsOtherThanGoodwill
1728 Amortization expense Concept (Monetary) For Period ifrs-full:AmortisationIntangibleAssetsOtherThanGoodwill
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1730 Intangible assets at ending period Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsOtherThanGoodwill
1731 1128 - Disclosure - GOODWILL AND INTANGIBLE ASSETS, NET (Details 2) Network

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http://www.grupobancolombia.com/role/GoodwillAndIntangibleAssetsNetDetails2
1732 Disclosure of detailed information about intangible assets [table] Table

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*

ifrs-full:DisclosureOfIntangibleAssetsTable
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1735 Disclosure of detailed information about intangible assets [line items] LineItems ifrs-full:DisclosureOfIntangibleAssetsLineItems
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1737 Effect of change in foreign exchange rate Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesGoodwill
1738 Balance Concept (Monetary) As Of Debit ifrs-full:Goodwill
1739 1129 - Disclosure - GOODWILL AND INTANGIBLE ASSETS, NET (Details 3) Network

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*

http://www.grupobancolombia.com/role/GoodwillAndIntangibleAssetsNetDetails3
1740 Disclosure of detailed information about intangible assets [table] Table

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*

ifrs-full:DisclosureOfIntangibleAssetsTable
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1751 Growth rate (real) Concept (Percent) As Of ifrs-full:DescriptionOfGrowthRateUsedToExtrapolateCashFlowProjections
1752 1130 - Disclosure - GOODWILL AND INTANGIBLE ASSETS, NET (Details 4) Network

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*

http://www.grupobancolombia.com/role/GoodwillAndIntangibleAssetsNetDetails4
1753 Disclosure of detailed information about intangible assets [table] Table

*

*

ifrs-full:DisclosureOfIntangibleAssetsTable
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1772 1131 - Disclosure - GOODWILL AND INTANGIBLE ASSETS, NET (Details Textual) Network

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*

http://www.grupobancolombia.com/role/GoodwillAndIntangibleAssetsNetDetailsTextual
1773 Disclosure of detailed information about intangible assets [table] Table

*

*

ifrs-full:DisclosureOfIntangibleAssetsTable
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1779 Research and Development Expense Concept (Monetary) For Period Debit ifrs-full:ResearchAndDevelopmentExpense
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1781 1132 - Disclosure - PREMISES AND EQUIPMENT, NET (Details) Network

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http://www.grupobancolombia.com/role/PremisesAndEquipmentNetDetails
1782 Disclosure of detailed information about property, plant and equipment [table] Table

*

*

ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
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1792 Furniture and fixtures [member] Member ifrs-full:FixturesAndFittingsMember
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1795 Airplane [member] Member ifrs-full:AircraftMember
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1802 Balance at Beginning Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
1803 Acquisitions Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
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1810 1133 - Disclosure - INVESTMENT PROPERTIES (Details) Network

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*

http://www.grupobancolombia.com/role/InvestmentPropertiesDetails
1811 Disclosure of detailed information about investment property [table] Table

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*

ifrs-full:DisclosureOfInvestmentPropertyTable
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1820 Balance at the end of the period Concept (Monetary) As Of Debit ifrs-full:InvestmentProperty
1821 1134 - Disclosure - INVESTMENT PROPERTIES (Details 1) Network

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*

http://www.grupobancolombia.com/role/InvestmentPropertiesDetails1
1822 Disclosure of detailed information about investment property [table] Table

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*

ifrs-full:DisclosureOfInvestmentPropertyTable
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1826 Land [Member] Member ifrs-full:LandMember
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1829 Investment property [member] Member ifrs-full:InvestmentPropertyMember
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1831 Balance at the beginning of the year Concept (Monetary) As Of Debit ifrs-full:InvestmentProperty
1832 Appraisals Concept (Monetary) For Period ifrs-full:GainsLossesOnFairValueAdjustmentInvestmentProperty
1833 Net increase in (decrease) in investment properties Concept (Monetary) For Period Debit ifrs-full:ChangesInInvestmentProperty
1834 Balance at the end of the period Concept (Monetary) As Of Debit ifrs-full:InvestmentProperty
1835 1135 - Disclosure - INVESTMENT PROPERTIES (Details 2) Network

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*

http://www.grupobancolombia.com/role/InvestmentPropertiesDetails2
1836 Implied Table Table

*

*

implied:Table
1837 Disclosure of detailed information about investment property [abstract] Abstract ifrs-full:DisclosureOfInvestmentPropertyAbstract
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1839 Investment properties that generated income through rentals Concept (Monetary) For Period Debit ifrs-full:DirectOperatingExpenseFromInvestmentPropertyGeneratingRentalIncome
1840 Investment properties that did not generate income through rentals Concept (Monetary) For Period Debit ifrs-full:DirectOperatingExpenseFromInvestmentPropertyNotGeneratingRentalIncome
1841 1136 - Disclosure - INCOME TAX (Details) Network

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http://www.grupobancolombia.com/role/IncomeTaxDetails
1842 Implied Table Table

*

*

implied:Table
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1846 Previous fiscal years Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForCurrentTaxOfPriorPeriod
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1851 Total tax Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
1852 1137 - Disclosure - INCOME TAX (Details 1) Network

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http://www.grupobancolombia.com/role/IncomeTaxDetails1
1853 Implied Table Table

*

*

implied:Table
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1863 Unrealized gains/(loss) on investments in associates and joint ventures using equity method. Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLoss
1864 Net profit (loss) by financial instruments measured at fair value Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
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1869 Unrealized gains/(loss) on investments in associates and joint ventures using equity method. Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossNetOfTax
1870 Net profit (loss) by financial instruments measured at fair value Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
1871 Net profit (loss) on foreign investment hedge Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxHedgesOfNetInvestmentsInForeignOperations
1872 Net Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesOnHedgingInstrumentsThatHedgeInvestmentsInEquityInstruments
1873 1138 - Disclosure - INCOME TAX (Details 2) Network

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1874 Disclosure Of Income Tax [Table] Table

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cib:DisclosureOfIncomeTaxTable
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1879 Explanation of applicable rates Abstract ifrs-full:ReconciliationOfAverageEffectiveTaxRateAndApplicableTaxRateAbstract
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1882 Surcharge Concept (Percent) For Period cib:TaxRateEffectOfSurcharge
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1884 1139 - Disclosure - INCOME TAX (Details 3) Network

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1885 Disclosure Of Income Tax [Table] Table

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*

cib:DisclosureOfIncomeTaxTable
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1896 2019 [member] Member cib:TwoThousandsNinteenMember
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1900 1140 - Disclosure - INCOME TAX (Details 4) Network

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1901 Disclosure Of Income Tax [Table] Table

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cib:DisclosureOfIncomeTaxTable
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1907 Temporary differences Concept (Monetary) As Of ifrs-full:TemporaryDifferencesAssociatedWithInvestmentsInSubsidiariesBranchesAndAssociatesAndInterestsInJointVentures
1908 1141 - Disclosure - INCOME TAX (Details 5) Network

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1909 Disclosure Of Income Tax [Table] Table

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cib:DisclosureOfIncomeTaxTable
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1911 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
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1913 Bagrícola Costa Rica S.A. [member] Member cib:BagricolaCostaRicaSaMember
1914 Grupo Agromercantil Holding [member] Member cib:GrupoAgromercantilHoldingMember
1915 Banca de Inversión Bancolombia S.A. [member] Member cib:BancaDeInversionBancolombiaSaMember
1916 Banco Agrícola S.A. [member] Member cib:BancoAgricolaSaMember
1917 Bancolombia S.A. [member] Member cib:BancolombiaSaMember
1918 Banistmo S.A. y Filiales [member] Member cib:BanistmoSaYFilialesMember
1919 BIBA Inmobiliaria S.A.S. [member] Member cib:BibaInmobiliariaSasMember
1920 Fiduciaria Bancolombia S.A. [member] Member cib:FiduciariaBancolombiaSaMember
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1932 1142 - Disclosure - INCOME TAX (Details 6) Network

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1933 Disclosure Of Income Tax [Table] Table

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cib:DisclosureOfIncomeTaxTable
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1947 Net deferred tax, With OCI effects Concept (Monetary) For Period ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome
1948 Net deferred tax, Eliminations Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDeferredTaxOfPriorPeriods
1949 Net deferred tax, Reclassifications Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseArisingFromWritedownOrReversalOfWritedownOfDeferredTaxAsset
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1951 1143 - Disclosure - INCOME TAX (Details 7) Network

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1952 Disclosure Of Income Tax [Table] Table

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1953 Temporary difference, unused tax losses and unused tax credits [axis] Axis ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
1954 Temporary difference, unused tax losses and unused tax credits [member] Member ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
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1956 Employee benefits [Member] Member cib:EmployeeBenefitsMember
1957 Deterioration assessment [Member] Member cib:ImpairmentEvaluationMember
1958 Tax credits settlement [Member] Member cib:OffsetOfTaxCreditsMember
1959 Financial obligations [Member] Member cib:FinancialObligationsMember
1960 Investments evaluation [Member] Member cib:InvestmentValuationMember
1961 Other deductions [Member] Member cib:OtherDeductionsMember
1962 Leasing re-expression [Member] Member cib:LeasingReexpressionMember
1963 Derivatives' evaluation [Member] Member cib:DerivativesValuationMember
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1965 Participatory Titles Evaluation [Member] Member cib:ParticipatoryTitlesEvaluationMember
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1967 Deferred Tax Recognition [Axis] Axis cib:DeferredTaxRecognitionAxis
1968 Deferred Tax Recognition [Domain] Member cib:DeferredTaxRecognitionDomain
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1971 Implementation of Deferred Tax Assets Concept (Monetary) For Period Debit cib:RealizationOfDeferredTaxAssets
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1975 Implementation of Deferred Tax Liability Concept (Monetary) For Period Credit cib:RealizationOfDeferredTaxLiability
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1978 1144 - Disclosure - INCOME TAX (Details 8) Network

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1979 Disclosure Of Income Tax [Table] Table

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1980 Temporary difference, unused tax losses and unused tax credits [axis] Axis ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
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1983 Investments evaluation [Member] Member cib:InvestmentValuationMember
1984 IFRS 9 implementation adjustment [Member] Member cib:IFRS9ImplementationAdjustmentMember
1985 Investments In Associates Accounted For Using Equity Method [member] Member cib:InvestmentsInAssociatesAccountedForUsingEquityMethodMember
1986 Investments Hedges In Foreign Operations [Member] Member cib:InvestmentsHedgesInForeignOperationsMember
1987 Deferred Tax Recognition [Axis] Axis cib:DeferredTaxRecognitionAxis
1988 Deferred Tax Recognition [Domain] Member cib:DeferredTaxRecognitionDomain
1989 Disclosure Of Income Tax [Line Items] LineItems cib:DisclosureOfIncomeTaxLineItems
1990 December 31,2017 Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
1991 Realization of Deferred Tax Assets Concept (Monetary) For Period Debit cib:RealizationOfDeferredTaxAssets
1992 Increase In Deferred Tax Assets Concept (Monetary) For Period Credit cib:IncreaseInDeferredTaxAssets
1993 December 31, 2018 Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
1994 December 31, 2017 Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
1995 Realization of Deferred Tax Liability Concept (Monetary) For Period Credit cib:RealizationOfDeferredTaxLiability
1996 Increase In Deferred Tax Liability Concept (Monetary) For Period Debit cib:IncreaseInDeferredTaxLiability
1997 December 31, 2018 Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
1998 1145 - Disclosure - INCOME TAX (Details 9) Network

*

*

http://www.grupobancolombia.com/role/IncomeTaxDetails9
1999 Implied Table Table

*

*

implied:Table
2000 Disclosure Of Income Tax [Abstract] Abstract cib:DisclosureOfIncomeTaxAbstract
2001 Accounting profit Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
2002 Applicable tax with nominal rate Concept (Monetary) For Period Debit ifrs-full:TaxExpenseIncomeAtApplicableTaxRate
2003 Non-deductible expenses to determine taxable profit (loss) Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss
2004 Accounting and non-tax expense (income) to determine of taxable profit (loss) Concept (Monetary) For Period Debit cib:TaxEffectOfAccountingAndNotFiscalExpensesIncomeForDeterminingTaxableProfitLoss
2005 Base Differences Concept (Monetary) For Period Debit ifrs-full:TaxEffectFromChangeInTaxRate
2006 Fiscal and non-accounting expense (income) to determine of taxable profit (loss) Concept (Monetary) For Period Debit cib:TaxEffectOfTaxAndNotAccountingAndNotFiscalExpensesIncomeForDeterminingTaxableProfitLoss
2007 Ordinary activities income exempt from taxation Concept (Monetary) For Period Credit ifrs-full:TaxEffectOfRevenuesExemptFromTaxation2011
2008 Ordinary activities income not constituting income or occasional tax gain Concept (Monetary) For Period Credit cib:TaxEffectOfIncomeFromOrdinaryActivitiesNotConstitutingIncomeOrOccasionalEarningsFromTaxation
2009 Tax deductions Concept (Monetary) For Period Credit cib:TaxEffectOfOtherFiscalDeductions
2010 Goodwill Depreciation Concept (Monetary) For Period Debit cib:TaxEffectOfGoodwillDepreciation
2011 Tax depreciation surplus Concept (Monetary) For Period Debit cib:TaxEffectOfTaxDepreciationSurplus
2012 Tax rate effect in other countries Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfForeignTaxRates
2013 Prior fiscal terms Concept (Monetary) For Period Debit cib:TaxEffectOfPriorFiscalTerms
2014 Other effects of the tax rate by reconciliation between accounting profit and tax expense (income) Concept (Monetary) For Period Debit ifrs-full:OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome
2015 Total tax Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
2016 1146 - Disclosure - INCOME TAX (Details 11) Network

*

*

http://www.grupobancolombia.com/role/IncomeTaxDetails11
2017 Implied Table Table

*

*

implied:Table
2018 Disclosure Of Income Tax [Abstract] Abstract cib:DisclosureOfIncomeTaxAbstract
2019 Income Tax loss carryforward Minimum Base Concept (Monetary) As Of Debit cib:IncomeTaxLossCarryforwardMinimumBase
2020 Unused Tax Losses for Which Deferred Tax Asset Recognised Concept (Monetary) As Of Debit cib:UnusedTaxLossesForWhichDeferredTaxAssetRecognised
2021 1147 - Disclosure - INCOME TAX (Details 12) Network

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*

http://www.grupobancolombia.com/role/IncomeTaxDetails12
2022 Statement [Table] Table

*

*

us-gaap:StatementTable
2023 Class of Stock [Axis] Axis us-gaap:StatementClassOfStockAxis
2024 Class of Stock [Domain] Member us-gaap:ClassOfStockDomain
2025 Classes of contingent liabilities [axis] Axis ifrs-full:ClassesOfContingentLiabilitiesAxis
2026 Contingent liabilities [member] Member ifrs-full:ContingentLiabilitiesMember
2027 Tax contingent liability [member] Member ifrs-full:TaxContingentLiabilityMember
2028 Statement [Line Items] LineItems us-gaap:StatementLineItems
2029 Balance At Beginning Concept (Monetary) As Of Credit cib:ContingentLiabilitiesAtTheBeginning
2030 Update Concept (Monetary) For Period Credit cib:IncreaseDecreaseDuringThePeriodInContingentLiabilities
2031 Payments Concept (Monetary) For Period Debit cib:SettlementOfContingentLiabilitiesDuringThePeriod
2032 Reversal Concept (Monetary) For Period Debit cib:ContingentLiabilitiesReversalsDuringThePeriod
2033 Balance At Ending Concept (Monetary) As Of Credit cib:ContingentLiabilitiesAtTheEnding
2034 1148 - Disclosure - INCOME TAX (Details 13) Network

*

*

http://www.grupobancolombia.com/role/IncomeTaxDetails13
2035 Statement [Table] Table

*

*

us-gaap:StatementTable
2036 Class of Stock [Axis] Axis us-gaap:StatementClassOfStockAxis
2037 Class of Stock [Domain] Member us-gaap:ClassOfStockDomain
2038 Statement [Line Items] LineItems us-gaap:StatementLineItems
2039 Rate Concept (Percent) For Period ifrs-full:ApplicableTaxRate
2040 Additional points Concept (Percent) For Period ifrs-full:TaxRateEffectOfAdjustmentsForCurrentTaxOfPriorPeriods
2041 Total rate Concept (Percent) For Period ifrs-full:AverageEffectiveTaxRate
2042 1149 - Disclosure - INCOME TAX (Details 14) Network

*

*

http://www.grupobancolombia.com/role/IncomeTaxDetails14
2043 Disclosure Of Income Tax [Table] Table

*

*

cib:DisclosureOfIncomeTaxTable
2044 Year [Axis] Axis cib:YearAxis
2045 Year [Domain] Member cib:YearDomain
2046 2019 [Member] Member cib:TwoThousandNinteenMember
2047 2020 [Member] Member cib:TwoThousandTwentyMember
2048 2021 [Member] Member cib:TwoThousandTwentyoneMember
2049 2022 [Member] Member cib:TwoThousandTwentytwoMember
2050 Disclosure Of Income Tax [Line Items] LineItems cib:DisclosureOfIncomeTaxLineItems
2051 Rent Concept (Percent) For Period cib:TaxEffectOfRentPercentage
2052 Additional points Concept (Percent) For Period ifrs-full:OtherTaxRateEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome
2053 Total Concept (Percent) For Period ifrs-full:ApplicableTaxRate
2054 1150 - Disclosure - INCOME TAX (Details Textual) Network

*

*

http://www.grupobancolombia.com/role/IncomeTaxDetailsTextual
2055 Disclosure Of Income Tax [Table] Table

*

*

cib:DisclosureOfIncomeTaxTable
2056 Range [Axis] Axis ifrs-full:RangeAxis
2057 Ranges [member] Member ifrs-full:RangesMember
2058 Top of range [member] Member ifrs-full:TopOfRangeMember
2059 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
2060 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
2061 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
2062 Disclosure Of Income Tax [Line Items] LineItems cib:DisclosureOfIncomeTaxLineItems
2063 Ordinary income tax rate Concept (Percent) For Period cib:OrdinaryIncomeTaxRate
2064 Applicable tax rate Concept (Percent) For Period ifrs-full:ApplicableTaxRate
2065 Borrowings, maturity Concept (Text/String) For Period ifrs-full:BorrowingsMaturity
2066 Percentage of Funds owned By Same Effective Subsidiary Concept (Percent) As Of cib:PercentageOfFundsOwnedBySameEffectiveSubsidiary
2067 Deductions in Income Tax Rate Concept (Percent) For Period cib:DeductionsInIncomeTaxRate
2068 Percentage of Sale Price of Commercial Value Concept (Percent) For Period cib:PercentageOfSalePriceOfCommercialValue
2069 Percentage of Sale Price of Non Listed Shares Concept (Percent) For Period cib:PercentageOfSalePriceOfNonListedShares
2070 Percentage of Marginal Income tax rate on Dividends Concept (Percent) For Period cib:PercentageOfMarginalIncomeTaxRateOnDividends
2071 Percentage of Witholding Tax Rate on Dividends Concept (Percent) For Period cib:PercentageOfWitholdingTaxRateOnDividends
2072 Percentage of General Income Tax Rates Levied on Dividends Concept (Percent) For Period cib:PercentageOfGeneralIncomeTaxRatesLeviedOnDividends
2073 Percentage of Income tax on Capital Investments Dividends Paid but yet to be Levied Concept (Percent) For Period cib:PercentageOfIncomeTaxOnCapitalInvestmentsDividendsPaidButYetToBeLevied
2074 Percentage of Income tax on Capital Investments Dividends Not Paid and Yet to be Levied Concept (Percent) For Period cib:PercentageOfIncomeTaxOnCapitalInvestmentsDividendsNotPaidAndYetToBeLevied
2075 Percentage of Retention Rate on Dividends Concept (Percent) For Period cib:PercentageOfRetentionRateOnDividends
2076 Description of Requirement to be a Beneficiary of Regime of Colombian Holding Company Concept (Percent) For Period cib:DescriptionOfRequirementToBeABeneficiaryOfRegimeOfColombianHoldingCompany
2077 Percentage of presumed Income on Net Equity Concept (Percent) For Period cib:PercentageOfPresumedIncomeOnNetEquity
2078 Deferred Tax Assets Liability Without Eliminations Concept (Monetary) As Of Credit cib:DeferredTaxAssetsLiabilityWithoutEliminations
2079 Deferred Tax Assets Liability With Eliminations Concept (Monetary) As Of Credit cib:DeferredTaxAssetsLiabilityWithEliminations
2080 Deferred tax liability (asset) Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
2081 Income And Other Terms Terms Concept (Text/String) For Period cib:IncomeAndOtherTermsTerms
2082 Previous Tax Recoveries Concept (Monetary) For Period Credit cib:PreviousTaxRecoveries
2083 1151 - Disclosure - ASSETS HELD FOR SALE AND INVENTORIES (Details) Network

*

*

http://www.grupobancolombia.com/role/AssetsHeldForSaleAndInventoriesDetails
2084 Implied Table Table

*

*

implied:Table
2085 Disclosure of Assets Held For Sale And Inventories [Abstract] Abstract cib:DisclosureOfAssetsHeldForSaleAndInventoriesAbstract
2086 Inventories Concept (Monetary) As Of Debit ifrs-full:InventoriesTotal
2087 Assets held for sale Concept (Monetary) As Of Debit cib:AssetsHeldForSale
2088 Total inventories and assets held for sale Concept (Monetary) As Of Debit cib:AssetsHeldForSaleAndInventories
2089 1152 - Disclosure - ASSETS HELD FOR SALE AND INVENTORIES (Details 1) Network

*

*

http://www.grupobancolombia.com/role/AssetsHeldForSaleAndInventoriesDetails1
2090 Disclosure of Assets Held For Sale And Inventories [Table] Table

*

*

cib:DisclosureOfAssetsHeldForSaleAndInventoriesTable
2091 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
2092 Carrying amount [member] Member ifrs-full:CarryingAmountMember
2093 Disclosure of Assets Held For Sale And Inventories [Line Items] LineItems cib:DisclosureOfAssetsHeldForSaleAndInventoriesLineItems
2094 Lands and buildings Concept (Monetary) As Of Debit ifrs-full:PropertyIntendedForSaleInOrdinaryCourseOfBusiness
2095 Vehicles Concept (Monetary) As Of Debit cib:InventoriesVehicles
2096 Machinery Concept (Monetary) As Of Debit cib:InventoriesMachinery
2097 Total inventory cost Concept (Monetary) As Of Debit cib:InventoriesCost
2098 Impairment Concept (Monetary) As Of Credit cib:TotalImpairmentLoss
2099 Total inventories, net Concept (Monetary) As Of Debit ifrs-full:InventoriesTotal
2100 1153 - Disclosure - ASSETS HELD FOR SALE AND INVENTORIES (Details 2) Network

*

*

http://www.grupobancolombia.com/role/AssetsHeldForSaleAndInventoriesDetails2
2101 Statement [Table] Table

*

*

us-gaap:StatementTable
2102 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
2103 Property, Plant and Equipment [Member] Member ifrs-full:PropertyPlantAndEquipmentMember
2104 Real Estate For Residential Purposes [Member] Member cib:RealEstateForResidentialPurposesMember
2105 Machinery [member] Member ifrs-full:MachineryMember
2106 Real Estate For Other Than Residential Purposes [Member] Member cib:RealEstateForOtherThanResidentialPurposesMember
2107 Investments held for sale [Member] Member cib:InvestmentsHeldForSaleMember
2108 Assets related to investments held for sale [Member] Member cib:AssetsRelatedToInvestmentsHeldForSaleMember
2109 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
2110 Assets [member] Member ifrs-full:ClassesOfAssetsMember
2111 Non-current assets held for sale [member] Member ifrs-full:NoncurrentAssetsHeldForSaleMember
2112 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
2113 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
2114 Others [Member] Member cib:OthersMember
2115 Panama [Member] Member country:PA
2116 Colombia [Member] Member country:CO
2117 Guatemala [Member] Member country:GT
2118 EL SALVADOR [Member] Member country:SV
2119 Statement [Line Items] LineItems us-gaap:StatementLineItems
2120 Assets held for sale Concept (Monetary) As Of Debit cib:AssetsHeldForSale
2121 Cost Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtAmortisedCost
2122 Impairment Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossOnFinancialAssets
2123 1154 - Disclosure - ASSETS HELD FOR SALE AND INVENTORIES (Details 3) Network

*

*

http://www.grupobancolombia.com/role/AssetsHeldForSaleAndInventoriesDetails3
2124 Statement [Table] Table

*

*

us-gaap:StatementTable
2125 Assets and liabilities classified as held for sale [axis] Axis ifrs-full:AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis
2126 Assets and liabilities not classified as held for sale [member] Member ifrs-full:AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember
2127 Assets and liabilities classified as held for sale [member] Member ifrs-full:AssetsAndLiabilitiesClassifiedAsHeldForSaleMember
2128 Statement [Line Items] LineItems us-gaap:StatementLineItems
2129 Assets Abstract ifrs-full:AssetsAbstract
2130 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
2131 Financial assets investment Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
2132 Premises and equipment, net Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
2133 Prepaid expenses Concept (Monetary) As Of Debit ifrs-full:CurrentPrepaidExpenses
2134 Tax receivables Concept (Monetary) As Of Debit ifrs-full:CurrentTaxAssets
2135 Deferred tax Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
2136 Assets held for sale Concept (Monetary) As Of Debit cib:AssetsHeldForSale
2137 Other assets Concept (Monetary) As Of Debit ifrs-full:OtherAssets
2138 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
2139 Liabilities Abstract ifrs-full:LiabilitiesAbstract
2140 Borrowings from other financial institutions Concept (Monetary) As Of Credit ifrs-full:Borrowings
2141 Tax liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentTaxLiabilities
2142 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
2143 Other liabilities Concept (Monetary) As Of Credit ifrs-full:OtherLiabilities
2144 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
2145 1155 - Disclosure - ASSETS HELD FOR SALE AND INVENTORIES (Details Textual) Network

*

*

http://www.grupobancolombia.com/role/AssetsHeldForSaleAndInventoriesDetailsTextual
2146 Disclosure of Assets Held For Sale And Inventories [Table] Table

*

*

cib:DisclosureOfAssetsHeldForSaleAndInventoriesTable
2147 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
2148 Property, Plant and Equipment [Member] Member ifrs-full:PropertyPlantAndEquipmentMember
2149 Disclosure of Assets Held For Sale And Inventories [Line Items] LineItems cib:DisclosureOfAssetsHeldForSaleAndInventoriesLineItems
2150 Impairment loss on financial assets Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossOnFinancialAssets
2151 1156 - Disclosure - OTHER ASSETS (Details) Network

*

*

http://www.grupobancolombia.com/role/OtherAssetsDetails
2152 Disclosure Of Other Asset [Table] Table

*

*

cib:DisclosureOfOtherAssetTable
2153 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
2154 Assets [member] Member ifrs-full:ClassesOfAssetsMember
2155 Disclosure Of Other Asset [Line Items] LineItems cib:DisclosureOfOtherAssetLineItems
2156 Tax advance Concept (Monetary) As Of Debit cib:TaxAdvance
2157 Marketable and non-marketable for sale assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAvailableforsale
2158 Other receivables Concept (Monetary) As Of Debit ifrs-full:OtherReceivables
2159 Prepaid expenses Concept (Monetary) As Of Debit ifrs-full:CurrentPrepaidExpenses
2160 Assets pledged as collateral Concept (Monetary) As Of Debit ifrs-full:RestrictedCashAndCashEquivalents
2161 Receivables related to abandoned accounts Concept (Monetary) As Of Debit cib:ReceivableRelatedToAbandonedPrivateAccounts
2162 Interbank Borrowings not classified as cash equivalents Concept (Monetary) As Of Debit ifrs-full:ShorttermDepositsNotClassifiedAsCashEquivalents
2163 Receivable Sales of goods and service Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
2164 Commission receivables Concept (Monetary) As Of Debit cib:CommissionReceivables
2165 Revenue from contracts with customers Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
2166 Commission for letters of credit Concept (Monetary) As Of Debit cib:CommissionForLettersOfCredit
2167 Balance in credit card clearning house Concept (Monetary) As Of Debit cib:BalanceInCreditCardClearningHouse
2168 Operating leases Concept (Monetary) As Of Debit ifrs-full:UndiscountedOperatingLeasePaymentsToBeReceived
2169 Debtors Concept (Monetary) As Of Debit ifrs-full:TradeReceivables
2170 Taxes Receivable Concept (Monetary) As Of Debit ifrs-full:CurrentReceivablesFromTaxesOtherThanIncomeTax
2171 Others Concept (Monetary) As Of Debit ifrs-full:OtherCurrentAssets
2172 Total other assets Concept (Monetary) As Of Debit cib:GrossOtherAssets
2173 Allowance others Concept (Monetary) As Of Debit cib:OtherAllowance
2174 Total other assets, net Concept (Monetary) As Of Debit ifrs-full:OtherAssets
2175 1157 - Disclosure - DEPOSITS FROM CUSTOMERS (Details) Network

*

*

http://www.grupobancolombia.com/role/DepositsFromCustomersDetails
2176 Implied Table Table

*

*

implied:Table
2177 Disclosure Of Deposits From Customers [Abstract] Abstract cib:DisclosureOfDepositsFromCustomersAbstract
2178 Saving accounts Concept (Monetary) As Of Credit cib:BalancesOnSavingAccountsFromCustomers
2179 Time deposits Concept (Monetary) As Of Credit ifrs-full:BalancesOnTermDepositsFromCustomers
2180 Checking accounts Concept (Monetary) As Of Credit ifrs-full:BalancesOnDemandDepositsFromCustomers
2181 Other deposits Concept (Monetary) As Of Credit ifrs-full:BalancesOnOtherDepositsFromCustomers
2182 Total Concept (Monetary) As Of Credit ifrs-full:DepositsFromCustomers
2183 1158 - Disclosure - DEPOSITS FROM CUSTOMERS (Details 1) Network

*

*

http://www.grupobancolombia.com/role/DepositsFromCustomersDetails1
2184 Disclosure Of Deposits From Customers [Table] Table

*

*

cib:DisclosureOfDepositsFromCustomersTable
2185 Range [Axis] Axis ifrs-full:RangeAxis
2186 Ranges [member] Member ifrs-full:RangesMember
2187 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
2188 Top of range [member] Member ifrs-full:TopOfRangeMember
2189 Maturity [axis] Axis ifrs-full:MaturityAxis
2190 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
2191 Later than three months and not later than six months [member] Member ifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMember
2192 Later than six months and not later than one year [member] Member ifrs-full:LaterThanSixMonthsAndNotLaterThanOneYearMember
2193 Later Than Twelve Months And Not Later Than Eighteen Months [Member] Member cib:LaterThanTwelveMonthsAndNotLaterThanEighteenMonthsMember
2194 Later Than Eighteen Months [Member] Member cib:LaterThanEighteenMonthsMember
2195 Disclosure Of Deposits From Customers [Line Items] LineItems cib:DisclosureOfDepositsFromCustomersLineItems
2196 Borrowings, interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
2197 Time deposits Concept (Monetary) As Of Credit ifrs-full:BalancesOnTermDepositsFromCustomers
2198 Fair value Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilitiesAtFairValue
2199 1159 - Disclosure - DEPOSITS FROM CUSTOMERS (Details 2) Network

*

*

http://www.grupobancolombia.com/role/DepositsFromCustomersDetails2
2200 Disclosure Of Deposits From Customers [Table] Table

*

*

cib:DisclosureOfDepositsFromCustomersTable
2201 Maturity [axis] Axis ifrs-full:MaturityAxis
2202 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
2203 Less than one year [member] Member ifrs-full:NotLaterThanOneYearMember
2204 1 to 3 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanThreeYearsMember
2205 3 to 5 years [member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFiveYearsMember
2206 More than 5 years [member] Member ifrs-full:LaterThanFiveYearsMember
2207 Disclosure Of Deposits From Customers [Line Items] LineItems cib:DisclosureOfDepositsFromCustomersLineItems
2208 Time deposits Concept (Monetary) As Of Credit ifrs-full:BalancesOnTermDepositsFromCustomers
2209 Fair value Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilitiesAtFairValue
2210 1160 - Disclosure - INTERBANK DEPOSITS AND REPURCHASE AGREEMENTS AND OTHER SIMILAR SECURED BORROWING (Details) Network

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*

http://www.grupobancolombia.com/role/InterbankDepositsAndRepurchaseAgreementsAndOtherSimilarSecuredBorrowingDetails
2211 Implied Table Table

*

*

implied:Table
2212 Disclosure of interbank deposits and repurchase agreements and other similar secured borrowing [Abstract] Abstract cib:DisclosureOfInterbankDepositsAndRepurchaseAgreementsAndOtherSimilarSecuredBorrowingAbstract
2213 Interbank Deposits Abstract cib:InterbankDepositsAbstract
2214 Interbank liabilities Concept (Monetary) As Of Credit cib:InterbankLiabilities
2215 Total interbank Concept (Monetary) As Of Credit ifrs-full:DepositsFromBanks
2216 Repurchase agreements and other similar secured borrowing Abstract cib:RepurchaseAgreementsAndOtherSimilarSecuredBorrowingAbstract
2217 Short selling operations Concept (Monetary) As Of Credit cib:ShortSellingOperations
2218 Temporary transfer of securities Concept (Monetary) As Of Credit cib:TemporaryTransferOfSecurities
2219 Total Repurchase agreements and other similar secured borrowing Concept (Monetary) As Of Credit ifrs-full:RepurchaseAgreementsAndCashCollateralOnSecuritiesLent
2220 Total money market transactions Concept (Monetary) As Of Credit cib:TotalMoneyMarketTransactions
2221 1161 - Disclosure - INTERBANK DEPOSITS AND REPURCHASE AGREEMENTS AND OTHER SIMILAR SECURED BORROWING (Details 1) Network

*

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http://www.grupobancolombia.com/role/InterbankDepositsAndRepurchaseAgreementsAndOtherSimilarSecuredBorrowingDetails1
2222 Disclosure of interbank deposits and repurchase agreements and other similar secured borrowing [Table] Table

*

*

cib:DisclosureOfInterbankDepositsAndRepurchaseAgreementsAndOtherSimilarSecuredBorrowingTable
2223 Transactions Type [Axis] Axis cib:TransactionsTypeAxis
2224 Transactions [Domain] Member cib:TransactionsDomain
2225 Securities sold under repurchase agreements [Member] Member cib:SecuritiesSoldUnderRepurchaseAgreementsMember
2226 Disclosure of interbank deposits and repurchase agreements and other similar secured borrowing [Line Items] LineItems cib:DisclosureOfInterbankDepositsAndRepurchaseAgreementsAndOtherSimilarSecuredBorrowingLineItems
2227 Assets / liabilities gross Concept (Monetary) As Of Credit cib:LiabilitiesAssetsGross
2228 Amounts offset in the statement of financial position Concept (Monetary) As Of Credit cib:AmountsOffset
2229 Net balance presented in the statement of financial position Concept (Monetary) As Of Credit cib:NetBalance
2230 Financial instruments as collaterals Concept (Monetary) As Of Debit ifrs-full:NoncashAssetsPledgedAsCollateralForWhichTransfereeHasRightByContractOrCustomToSellOrRepledgeCollateral
2231 Assets / liabilities net Concept (Monetary) As Of Credit cib:LiabilitiesAssetsNet
2232 1162 - Disclosure - INTERBANK DEPOSITS AND REPURCHASE AGREEMENTS AND OTHER SIMILAR SECURED BORROWING (Details Textual) Network

*

*

http://www.grupobancolombia.com/role/InterbankDepositsAndRepurchaseAgreementsAndOtherSimilarSecuredBorrowingDetailsTextual
2233 Implied Table Table

*

*

implied:Table
2234 Disclosure of interbank deposits and repurchase agreements and other similar secured borrowing [Abstract] Abstract cib:DisclosureOfInterbankDepositsAndRepurchaseAgreementsAndOtherSimilarSecuredBorrowingAbstract
2235 Borrowings, maturity Concept (Text/String) For Period ifrs-full:BorrowingsMaturity
2236 1163 - Disclosure - BORROWINGS FROM OTHER FINANCIAL INSTITUTIONS (Details) Network

*

*

http://www.grupobancolombia.com/role/BorrowingsFromOtherFinancialInstitutionsDetails
2237 Disclosure of Borrowings from other financial institutions [Table] Table

*

*

cib:DisclosureOfBorrowingsFromOtherFinancialInstitutionsTable
2238 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
2239 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
2240 Disclosure of Borrowings from other financial institutions [Line Items] LineItems cib:DisclosureOfBorrowingsFromOtherFinancialInstitutionsLineItems
2241 Obligations granted by foreign banks Concept (Monetary) As Of Credit cib:ObligationsGrantedByForeignBanks
2242 Obligations granted by domestic banks Concept (Monetary) As Of Credit cib:ObligationsGrantedByDomesticBanks
2243 Total Concept (Monetary) As Of Credit ifrs-full:OtherBorrowings
2244 1164 - Disclosure - BORROWINGS FROM OTHER FINANCIAL INSTITUTIONS (Details 1) Network

*

*

http://www.grupobancolombia.com/role/BorrowingsFromOtherFinancialInstitutionsDetails1
2245 Disclosure of Borrowings from other financial institutions [Table] Table

*

*

cib:DisclosureOfBorrowingsFromOtherFinancialInstitutionsTable
2246 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
2247 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
2248 Financiera de desarrollo territorial (Findeter) Member cib:DomesticBankOneMember
2249 Banco de comercio exterior de Colombia (Bancoldex) Member cib:DomesticBankTwoMember
2250 Fondo para el financiamiento del sector agropecuario (Finagro) Member cib:DomesticBankThreeMember
2251 Other private financial entities [Member] Member cib:DomesticBankFourMember
2252 Range [Axis] Axis ifrs-full:RangeAxis
2253 Ranges [member] Member ifrs-full:RangesMember
2254 Top of range [member] Member ifrs-full:TopOfRangeMember
2255 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
2256 Disclosure of Borrowings from other financial institutions [Line Items] LineItems cib:DisclosureOfBorrowingsFromOtherFinancialInstitutionsLineItems
2257 Borrowings, interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
2258 Obligations granted by domestic banks Concept (Monetary) As Of Credit cib:ObligationsGrantedByDomesticBanks
2259 1165 - Disclosure - BORROWINGS FROM OTHER FINANCIAL INSTITUTIONS (Details 2) Network

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http://www.grupobancolombia.com/role/BorrowingsFromOtherFinancialInstitutionsDetails2
2260 Disclosure of Borrowings from other financial institutions [Table] Table

*

*

cib:DisclosureOfBorrowingsFromOtherFinancialInstitutionsTable
2261 Maturity [axis] Axis ifrs-full:MaturityAxis
2262 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
2263 No more than twelve months after the reporting period [member] Member ifrs-full:NotLaterThanOneYearMember
2264 More than twelve months after the reporting period [member] Member ifrs-full:LaterThanOneYearMember
2265 Disclosure of Borrowings from other financial institutions [Line Items] LineItems cib:DisclosureOfBorrowingsFromOtherFinancialInstitutionsLineItems
2266 Obligations granted by domestic banks Concept (Monetary) As Of Credit cib:ObligationsGrantedByDomesticBanks
2267 1166 - Disclosure - BORROWINGS FROM OTHER FINANCIAL INSTITUTIONS (Details 3) Network

*

*

http://www.grupobancolombia.com/role/BorrowingsFromOtherFinancialInstitutionsDetails3
2268 Disclosure of Borrowings from other financial institutions [Table] Table

*

*

cib:DisclosureOfBorrowingsFromOtherFinancialInstitutionsTable
2269 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
2270 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
2271 Financing with correspondent banks [Member] Member cib:FinancingWithCorrespondentBanksMember
2272 Corporacion Andina de Fomento CAF [Member] Member cib:CorporacionAndinaDeFomentoCafMember
2273 Banco Latinoamericano de Comercio Exterior Bladex [Member] Member cib:BancoLatinoamericanoDeComercioExteriorBladexMember
2274 Banco Interamericano de Desarrollo BID [Member] Member cib:BancoInteramericanoDeDesarrolloBidMember
2275 Range [Axis] Axis ifrs-full:RangeAxis
2276 Ranges [member] Member ifrs-full:RangesMember
2277 Top of range [member] Member ifrs-full:TopOfRangeMember
2278 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
2279 Disclosure of Borrowings from other financial institutions [Line Items] LineItems cib:DisclosureOfBorrowingsFromOtherFinancialInstitutionsLineItems
2280 Borrowings, interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
2281 Obligations granted by foreign banks Concept (Monetary) As Of Credit cib:ObligationsGrantedByForeignBanks
2282 1167 - Disclosure - BORROWINGS FROM OTHER FINANCIAL INSTITUTIONS (Details 4) Network

*

*

http://www.grupobancolombia.com/role/BorrowingsFromOtherFinancialInstitutionsDetails4
2283 Disclosure of financial assets investments and derivatives [Table] Table

*

*

cib:DisclosureOfFinancialAssetsInvestmentsAndDerivativesTable
2284 Maturity [axis] Axis ifrs-full:MaturityAxis
2285 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
2286 No more than twelve months after the reporting period [member] Member ifrs-full:NotLaterThanOneYearMember
2287 More than twelve months after the reporting period [member] Member ifrs-full:LaterThanOneYearMember
2288 Disclosure of Borrowings from other financial institutions [Line Items] LineItems cib:DisclosureOfBorrowingsFromOtherFinancialInstitutionsLineItems
2289 Obligations granted by foreign banks Concept (Monetary) As Of Credit cib:ObligationsGrantedByForeignBanks
2290 1168 - Disclosure - DEBT SECURITIES IN ISSUE (Details) Network

*

*

http://www.grupobancolombia.com/role/DebtSecuritiesInIssueDetails
2291 Disclosure of debt securities in issue [Table] Table

*

*

cib:DisclosureOfDebtSecuritiesInIssueTable
2292 Range [Axis] Axis ifrs-full:RangeAxis
2293 Ranges [member] Member ifrs-full:RangesMember
2294 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
2295 Top of range [member] Member ifrs-full:TopOfRangeMember
2296 Counterparties [axis] Axis ifrs-full:CounterpartiesAxis
2297 Counterparties [member] Member ifrs-full:CounterpartiesMember
2298 Bancolombia S.A. Member cib:EntityOneMember
2299 Bancolombia S.A. Member cib:EntityTwoMember
2300 Banco Agrícola S.A. Member cib:EntityThreeMember
2301 Bancolombia Panama S.A. Member cib:EntityFourMember
2302 Grupo Agromercantil Holding S.A. Member cib:EntityFiveMember
2303 Banismo S.A. y filiales Member cib:EntitySixMember
2304 Bancolombia Puerto Rico International Inc Member cib:EntitySevenMemberMember
2305 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
2306 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
2307 Country of domicile [member] Member ifrs-full:CountryOfDomicileMember
2308 Foreign countries [member] Member ifrs-full:ForeignCountriesMember
2309 Disclosure of debt securities in issue [Line Items] LineItems cib:DisclosureOfDebtSecuritiesInIssueLineItems
2310 Notional amount Concept (Monetary) As Of ifrs-full:NotionalAmount
2311 Debt instruments issued Concept (Monetary) As Of Credit ifrs-full:DebtSecurities
2312 Borrowings, interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
2313 1169 - Disclosure - DEBT SECURITIES IN ISSUE (Details 1) Network

*

*

http://www.grupobancolombia.com/role/DebtSecuritiesInIssueDetails1
2314 Disclosure of debt securities in issue [Table] Table

*

*

cib:DisclosureOfDebtSecuritiesInIssueTable
2315 Maturity [axis] Axis ifrs-full:MaturityAxis
2316 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
2317 Less than a year [member] Member ifrs-full:NotLaterThanOneYearMember
2318 1 to 3 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanThreeYearsMember
2319 3 to 5 years [member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFiveYearsMember
2320 more than 5 years [member] Member ifrs-full:LaterThanFiveYearsMember
2321 Types of financial liabilities [axis] Axis ifrs-full:TypesOfFinancialLiabilitiesAxis
2322 Financial liabilities, type [member] Member ifrs-full:FinancialLiabilitiesTypeMember
2323 Subordinated bonds [member] Member cib:SubordinatedBondsMember
2324 Ordinary bonds [member] Member cib:OrdinaryBondsMember
2325 Type of Currency [Axis] Axis cib:TypeOfCurrencyAxis
2326 Type of currency [Domain] Member cib:TypeOfCurrencyDomain
2327 Local Currency One [Member] Member cib:LocalCurrencyOneMember
2328 Local Currency Two [Member] Member cib:LocalCurrencyTwoMember
2329 Foreign Currency One [Member] Member cib:ForeignCurrencyOneMember
2330 Foreign Currency Two [Member] Member cib:ForeignCurrencyTwoMember
2331 Disclosure of debt securities in issue [Line Items] LineItems cib:DisclosureOfDebtSecuritiesInIssueLineItems
2332 Debt instruments issued Concept (Monetary) As Of Credit ifrs-full:DebtSecurities
2333 1170 - Disclosure - DEBT SECURITIES IN ISSUE (Details 2) Network

*

*

http://www.grupobancolombia.com/role/DebtSecuritiesInIssueDetails2
2334 Disclosure of debt securities in issue [Table] Table

*

*

cib:DisclosureOfDebtSecuritiesInIssueTable
2335 Maturity [axis] Axis ifrs-full:MaturityAxis
2336 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
2337 No more than twelve months after the reporting period [member] Member ifrs-full:NotLaterThanOneYearMember
2338 More than twelve months after the reporting period [member] Member ifrs-full:LaterThanOneYearMember
2339 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
2340 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
2341 Held to maturity Security [Member] Member cib:HeldToMaturitySecurityMember
2342 Disclosure of debt securities in issue [Line Items] LineItems cib:DisclosureOfDebtSecuritiesInIssueLineItems
2343 Debt instruments issued Concept (Monetary) As Of Credit ifrs-full:DebtSecurities
2344 1171 - Disclosure - DEBT SECURITIES IN ISSUE (Details Textual) Network

*

*

http://www.grupobancolombia.com/role/DebtSecuritiesInIssueDetailsTextual
2345 Disclosure of debt securities in issue [Table] Table

*

*

cib:DisclosureOfDebtSecuritiesInIssueTable
2346 Continuing and discontinued operations [axis] Axis ifrs-full:ContinuingAndDiscontinuedOperationsAxis
2347 Aggregate continuing and discontinued operations [member] Member ifrs-full:AggregateContinuingAndDiscontinuedOperationsMember
2348 Types of financial liabilities [axis] Axis ifrs-full:TypesOfFinancialLiabilitiesAxis
2349 Financial liabilities, type [member] Member ifrs-full:FinancialLiabilitiesTypeMember
2350 Ordinary bonds [Member] Member cib:OrdinaryBondsMember
2351 Banistmo bonds [Member] Member cib:BanistmoBondsMember
2352 Subordinated note three [Member] Member cib:SubordinatedNoteThreeMember
2353 Subordinated note two [Member] Member cib:SubordinatedNoteTwoMember
2354 Subordinated note one [Member] Member cib:SubordinatedNoteOneMember
2355 Subordinated notes [Member] Member cib:SubordinatedNotesMember
2356 Disclosure of debt securities in issue [Line Items] LineItems cib:DisclosureOfDebtSecuritiesInIssueLineItems
2357 Bonds issued Concept (Monetary) As Of Credit ifrs-full:BondsIssued
2358 Borrowings, maturity Concept (Text/String) For Period ifrs-full:BorrowingsMaturity
2359 Proportion of issue price Concept (Percent) As Of cib:ProportionOfIssuePrice
2360 Rate of return Concept (Percent) As Of cib:RateOfReturn
2361 Borrowings, interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
2362 Notional amount Concept (Monetary) As Of ifrs-full:NotionalAmount
2363 Notes and debentures issued Concept (Monetary) As Of Credit ifrs-full:NotesAndDebenturesIssued
2364 Proceeds from issue of bonds, notes and debentures Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssueOfBondsNotesAndDebentures
2365 Fee and commission expense Concept (Monetary) For Period Debit ifrs-full:FeeAndCommissionExpense
2366 Finance costs Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
2367 1172 - Disclosure - EMPLOYEE BENEFIT PLANS (Details) Network

*

*

http://www.grupobancolombia.com/role/EmployeeBenefitPlansDetails
2368 Implied Table Table

*

*

implied:Table
2369 Disclosure of employee benefit plans [Abstract] Abstract cib:DisclosureOfEmployeeBenefitPlansAbstract
2370 Defined benefit pension plan Concept (Monetary) As Of Credit cib:DefinedBenefitPensionPlan
2371 Severance obligation Concept (Monetary) As Of Credit cib:SeveranceObligation
2372 Retirement Pension Premium Plan and Senior Management Pension Plan Premium Concept (Monetary) As Of Credit cib:RetirementPensionPremiumPlanAndSeniorManagementPensionPlanPremium
2373 Other long term benefits Concept (Monetary) As Of Credit cib:OtherLongTermBenefits
2374 Post-employment and long-term benefit plans Concept (Monetary) As Of Credit ifrs-full:RecognisedLiabilitiesDefinedBenefitPlan
2375 1173 - Disclosure - EMPLOYEE BENEFIT PLANS (Details 1) Network

*

*

http://www.grupobancolombia.com/role/EmployeeBenefitPlansDetails1
2376 Implied Table Table

*

*

implied:Table
2377 Disclosure of employee benefit plans [Abstract] Abstract cib:DisclosureOfEmployeeBenefitPlansAbstract
2378 Current severance obligation Concept (Monetary) As Of Credit cib:CurrentSeveranceObligation
2379 Other bonuses and short-term benefits Concept (Monetary) As Of Credit ifrs-full:ShorttermEmployeeBenefitsAccruals
2380 Other employment benefit plans Concept (Monetary) As Of Credit cib:OtherEmploymentBenefitPlans
2381 1174 - Disclosure - EMPLOYEE BENEFIT PLANS (Details 2) Network

*

*

http://www.grupobancolombia.com/role/EmployeeBenefitPlansDetails2
2382 Disclosure of employee benefit plans [Table] Table

*

*

cib:DisclosureOfEmployeeBenefitPlansTable
2383 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
2384 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
2385 Domestic Defined Benefit Plan [Member] Member cib:DomesticDefinedBenefitPlanMember
2386 Foreign defined benefit plans [member] Member cib:ForeignDefinedBenefitPlanMember
2387 Disclosure of employee benefit plans [Line Items] LineItems cib:DisclosureOfEmployeeBenefitPlansLineItems
2388 Present value of the obligation as of January 1 Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
2389 Interest cost Concept (Monetary) For Period Credit ifrs-full:InterestExpenseIncomeNetDefinedBenefitLiabilityAsset
2390 Actuarial (gain)/loss - experience Concept (Monetary) For Period Debit cib:NetActuarialGainLossDueToPlanExperience
2391 Benefits paid or payable Concept (Monetary) For Period Debit cib:BenefitPaidOrPayable
2392 Actuarial (gain)/loss - financial assumptions Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInDemographicAssumptionsNetDefinedBenefitLiabilityAsset
2393 Benefits paid from plan assets Concept (Monetary) For Period Debit ifrs-full:PaymentsFromPlanNetDefinedBenefitLiabilityAsset
2394 Foreign currency translation effect Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangesInForeignExchangeRatesNetDefinedBenefitLiabilityAsset
2395 Defined obligation, unfunded as of December 31 Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
2396 1175 - Disclosure - EMPLOYEE BENEFIT PLANS (Details 3) Network

*

*

http://www.grupobancolombia.com/role/EmployeeBenefitPlansDetails3
2397 Disclosure of employee benefit plans [Table] Table

*

*

cib:DisclosureOfEmployeeBenefitPlansTable
2398 Actuarial assumptions [axis] Axis ifrs-full:ActuarialAssumptionsAxis
2399 Actuarial assumptions [member] Member ifrs-full:ActuarialAssumptionsMember
2400 Severance regimen [Member] Member cib:SeveranceRegimenMember
2401 Disclosure of employee benefit plans [Line Items] LineItems cib:DisclosureOfEmployeeBenefitPlansLineItems
2402 Present value of the obligation as of January 1 Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
2403 Current service cost Concept (Monetary) For Period Credit ifrs-full:CurrentServiceCostNetDefinedBenefitLiabilityAsset
2404 Interest cost Concept (Monetary) For Period Credit ifrs-full:InterestExpenseIncomeNetDefinedBenefitLiabilityAsset
2405 Benefits paid Concept (Monetary) For Period Debit ifrs-full:PaymentsFromPlanNetDefinedBenefitLiabilityAsset
2406 Net actuarial (gain) / loss due to assumption changes and plan experience Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset
2407 Defined obligation, unfunded as of December 31 Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
2408 Current severance regimen Concept (Monetary) As Of Credit cib:CurrentSeveranceObligation
2409 Total Concept (Monetary) As Of Credit cib:TotalSeveranceObligation
2410 1176 - Disclosure - EMPLOYEE BENEFIT PLANS (Details 4) Network

*

*

http://www.grupobancolombia.com/role/EmployeeBenefitPlansDetails4
2411 Disclosure of employee benefit plans [Table] Table

*

*

cib:DisclosureOfEmployeeBenefitPlansTable
2412 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
2413 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
2414 Net defined benefit liability (asset) [axis] Axis ifrs-full:NetDefinedBenefitLiabilityAssetAxis
2415 Net defined benefit liability (asset) [member] Member ifrs-full:NetDefinedBenefitLiabilityAssetMember
2416 Pension plan premium [Member] Member cib:PensionPlanPremiumMember
2417 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
2418 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
2419 Transportempo S.A.S. [Member] Member cib:TransportempoSasMember
2420 Banistmo S.A. y Filiales [Member] Member cib:BanistmoSaYFilialesMember
2421 Banagricola S.A. [Member] Member cib:BanagricolaSaMember
2422 Disclosure of employee benefit plans [Line Items] LineItems cib:DisclosureOfEmployeeBenefitPlansLineItems
2423 Present value of the obligation as of January 1 Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
2424 Current service cost Concept (Monetary) For Period Credit ifrs-full:CurrentServiceCostNetDefinedBenefitLiabilityAsset
2425 Interest cost Concept (Monetary) For Period Credit ifrs-full:InterestExpenseIncomeNetDefinedBenefitLiabilityAsset
2426 Benefits paid Concept (Monetary) For Period Debit ifrs-full:PaymentsFromPlanNetDefinedBenefitLiabilityAsset
2427 First time application effect of IAS 19 to new defined benefit obligationof Transportempo at December 31, 2017 Concept (Monetary) For Period Credit cib:IncreaseDecreaseThroughInitialApplicationOfAccountingStandardsNetDefinedBenefitLiabilityAsset
2428 First time application effect of IAS 19 to new defined benefit obligation of Banistmo at December 31, 2018 (2) Concept (Monetary) For Period Credit cib:IncreaseDecreaseThroughInitialApplicationOfAccountingStandardsNetDefinedBenefitLiabilityAsset
2429 First time application effect of IAS 19 to new defined benefit obligation of Banagrícola at December 31, 2018 (3) Concept (Monetary) For Period Credit cib:IncreaseDecreaseThroughInitialApplicationOfAccountingStandardsNetDefinedBenefitLiabilityAsset
2430 Net actuarial (gain) / loss due to assumption changes and plan experience Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset
2431 Foreign currency translation effect Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangesInForeignExchangeRatesNetDefinedBenefitLiabilityAsset
2432 Defined obligation, unfunded as of December 31 Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
2433 1177 - Disclosure - EMPLOYEE BENEFIT PLANS (Details 5) Network

*

*

http://www.grupobancolombia.com/role/EmployeeBenefitPlansDetails5
2434 Disclosure of employee benefit plans [Table] Table

*

*

cib:DisclosureOfEmployeeBenefitPlansTable
2435 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
2436 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
2437 Other long term benefits [Member] Member cib:OtherLongTermBenefitsMember
2438 CIBPension Plan Premium [Member] Member cib:CibpensionPlanPremiumMember
2439 Net defined benefit liability (asset) [axis] Axis ifrs-full:NetDefinedBenefitLiabilityAssetAxis
2440 Net defined benefit liability (asset) [member] Member ifrs-full:NetDefinedBenefitLiabilityAssetMember
2441 Foreign Defined Benefit Plan [Member] Member cib:ForeignDefinedBenefitPlanMember
2442 Disclosure of employee benefit plans [Line Items] LineItems cib:DisclosureOfEmployeeBenefitPlansLineItems
2443 Present value of the obligation as of January 1 Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
2444 Current service cost Concept (Monetary) For Period Credit ifrs-full:CurrentServiceCostNetDefinedBenefitLiabilityAsset
2445 Interest cost Concept (Monetary) For Period Credit ifrs-full:InterestExpenseIncomeNetDefinedBenefitLiabilityAsset
2446 Benefits paid Concept (Monetary) For Period Debit ifrs-full:PaymentsFromPlanNetDefinedBenefitLiabilityAsset
2447 Unfunded benefit obligation assumed for Grupo Agromercantil at December 31, 2017 Concept (Monetary) For Period Debit cib:UnfundedBenefitObligationAssumedNetDefinedBenefitLiabilityAsset
2448 First time application effect of IAS 19 to new defined benefit obligationof Transportempo at December 31, 2017 Concept (Monetary) For Period Credit cib:IncreaseDecreaseThroughInitialApplicationOfAccountingStandardsNetDefinedBenefitLiabilityAsset
2449 Loss due to assumption changes and plan experience Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset
2450 Foreign currency translation effect Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangesInForeignExchangeRatesNetDefinedBenefitLiabilityAsset
2451 Defined obligation, unfunded as of December 31 Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
2452 1178 - Disclosure - EMPLOYEE BENEFIT PLANS (Details 6) Network

*

*

http://www.grupobancolombia.com/role/EmployeeBenefitPlansDetails6
2453 Implied Table Table

*

*

implied:Table
2454 Disclosure of employee benefit plans [Abstract] Abstract cib:DisclosureOfEmployeeBenefitPlansAbstract
2455 Retirement Pension Premium Plan Concept (Monetary) As Of Credit cib:RetirementPensionPremiumPlan
2456 Post-employment and long-term benefit plans Concept (Monetary) As Of Credit ifrs-full:RecognisedLiabilitiesDefinedBenefitPlan
2457 Fair value of assets as of January 1 Concept (Monetary) As Of Debit ifrs-full:PlanAssetsAtFairValue
2458 Employer contributions Concept (Monetary) For Period Credit ifrs-full:EmployerContributions
2459 Fair value assets at the end of the year Concept (Monetary) As Of Debit ifrs-full:PlanAssetsAtFairValue
2460 1179 - Disclosure - EMPLOYEE BENEFIT PLANS (Details 7) Network

*

*

http://www.grupobancolombia.com/role/EmployeeBenefitPlansDetails7
2461 Disclosure of employee benefit plans [Table] Table

*

*

cib:DisclosureOfEmployeeBenefitPlansTable
2462 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
2463 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
2464 Employee pension plan [Member] Member cib:EmployeePensionPlanMember
2465 Disclosure of employee benefit plans [Line Items] LineItems cib:DisclosureOfEmployeeBenefitPlansLineItems
2466 Employee pension plan Concept (Monetary) As Of Debit ifrs-full:PlanAssetsAtFairValue
2467 Total Concept (Monetary) As Of Debit ifrs-full:PlanAssetsAtFairValue
2468 1180 - Disclosure - EMPLOYEE BENEFIT PLANS (Details 8) Network

*

*

http://www.grupobancolombia.com/role/EmployeeBenefitPlansDetails8
2469 Disclosure of employee benefit plans [Table] Table

*

*

cib:DisclosureOfEmployeeBenefitPlansTable
2470 Net defined benefit liability (asset) [axis] Axis ifrs-full:NetDefinedBenefitLiabilityAssetAxis
2471 Net defined benefit liability (asset) [member] Member ifrs-full:NetDefinedBenefitLiabilityAssetMember
2472 Plan assets [member] Member ifrs-full:PlanAssetsMember
2473 Disclosure of employee benefit plans [Line Items] LineItems cib:DisclosureOfEmployeeBenefitPlansLineItems
2474 Fair value of assets as of January 1 Concept (Monetary) As Of Debit ifrs-full:PlanAssetsAtFairValue
2475 Interest income on plan assets Concept (Monetary) For Period Credit ifrs-full:InterestExpenseIncomeNetDefinedBenefitLiabilityAsset
2476 Return on plan assets greater/(less) than discount rate Concept (Monetary) For Period Debit ifrs-full:ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset
2477 Benefits paid Concept (Monetary) For Period Debit ifrs-full:PaymentsFromPlanNetDefinedBenefitLiabilityAsset
2478 Foreign currency translation effect Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangesInForeignExchangeRatesNetDefinedBenefitLiabilityAsset
2479 Fair value assets at the end of the year Concept (Monetary) As Of Debit ifrs-full:PlanAssetsAtFairValue
2480 1181 - Disclosure - EMPLOYEE BENEFIT PLANS (Details 9) Network

*

*

http://www.grupobancolombia.com/role/EmployeeBenefitPlansDetails9
2481 Disclosure of employee benefit plans [Table] Table

*

*

cib:DisclosureOfEmployeeBenefitPlansTable
2482 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
2483 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
2484 Pension [Member] Member cib:PensionMember
2485 Current severance regimen [Member] Member cib:CurrentSeveranceRegimenMember
2486 Disclosure of employee benefit plans [Line Items] LineItems cib:DisclosureOfEmployeeBenefitPlansLineItems
2487 Post-employment benefit expense, defined contribution plans Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedContributionPlans
2488 1182 - Disclosure - EMPLOYEE BENEFIT PLANS (Details 10) Network

*

*

http://www.grupobancolombia.com/role/EmployeeBenefitPlansDetails10
2489 Disclosure of employee benefit plans [Table] Table

*

*

cib:DisclosureOfEmployeeBenefitPlansTable
2490 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
2491 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
2492 Bancolombia Panama [Member] Member cib:BancolombiaPanamaMember
2493 Banistmo [Member] Member cib:BanistmoMember
2494 Colombia [Member] Member country:CO
2495 Guatemala [Member] Member country:GT
2496 EL SALVADOR [Member] Member country:SV
2497 Disclosure of employee benefit plans [Line Items] LineItems cib:DisclosureOfEmployeeBenefitPlansLineItems
2498 Discount rate Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfDiscountRates
2499 Rate of wage increase Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases
2500 Projected inflation Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfInflation
2501 1183 - Disclosure - EMPLOYEE BENEFIT PLANS (Details 11) Network

*

*

http://www.grupobancolombia.com/role/EmployeeBenefitPlansDetails11
2502 Disclosure of employee benefit plans [Table] Table

*

*

cib:DisclosureOfEmployeeBenefitPlansTable
2503 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
2504 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
2505 Pension Benefits [Member] Member cib:PensionBenefitsMember
2506 Other Benefits [Member] Member cib:OtherBenefitsMember
2507 Maturity [axis] Axis ifrs-full:MaturityAxis
2508 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
2509 2019 Member ifrs-full:NotLaterThanOneYearMember
2510 2020 Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
2511 2021 Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
2512 2022 Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
2513 2023 Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFiveYearsMember
2514 2024 to 2028 Member ifrs-full:LaterThanFiveYearsMember
2515 Disclosure of employee benefit plans [Line Items] LineItems cib:DisclosureOfEmployeeBenefitPlansLineItems
2516 Actuarial present value of promised retirement benefits Concept (Monetary) As Of Credit ifrs-full:ActuarialPresentValueOfPromisedRetirementBenefits
2517 1184 - Disclosure - EMPLOYEE BENEFIT PLANS (Details 12) Network

*

*

http://www.grupobancolombia.com/role/EmployeeBenefitPlansDetails12
2518 Disclosure of employee benefit plans [Table] Table

*

*

cib:DisclosureOfEmployeeBenefitPlansTable
2519 Range [Axis] Axis ifrs-full:RangeAxis
2520 Ranges [member] Member ifrs-full:RangesMember
2521 Actuarial assumptions [axis] Axis ifrs-full:ActuarialAssumptionsAxis
2522 Actuarial assumptions [member] Member ifrs-full:ActuarialAssumptionsMember
2523 Discount rate [Member] Member ifrs-full:ActuarialAssumptionOfDiscountRatesMember
2524 Salary Level [Member] Member ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember
2525 Mortality Table [Member] Member ifrs-full:OtherMaterialActuarialAssumptionsMember
2526 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
2527 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
2528 Pension plans [Member] Member cib:PensionPlanBancolombiaMember
2529 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
2530 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
2531 Bancolombia [Member] Member cib:BancolombiaMember
2532 Defined Benefit Obligations [Axis] Axis cib:DefinedBenefitObligationsAxis
2533 Defined Benefit Obligations [Domain] Member cib:DefinedBenefitObligationsDomain
2534 Increase [Member] Member cib:IncreaseLevelMember
2535 Decrease [Member] Member cib:DecreaseLevelMember
2536 Disclosure of employee benefit plans [Line Items] LineItems cib:DisclosureOfEmployeeBenefitPlansLineItems
2537 Discount rate Value Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfDiscountRates
2538 Salary rate Value Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases
2539 Percentage of Increase Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleIncreaseInActuarialAssumption
2540 Percentage of Decrease Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleDecreaseInActuarialAssumption
2541 Mortality Table (Increase/Decrease) Concept (Text/String) For Period ifrs-full:DescriptionOfMethodsAndAssumptionsUsedInPreparingSensitivityAnalysisForActuarialAssumptions
2542 Effect on DBO Increase Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption
2543 Effect on DBO Decrease Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption
2544 1185 - Disclosure - EMPLOYEE BENEFIT PLANS (Details 13) Network

*

*

http://www.grupobancolombia.com/role/EmployeeBenefitPlansDetails13
2545 Disclosure of employee benefit plans [Table] Table

*

*

cib:DisclosureOfEmployeeBenefitPlansTable
2546 Range [Axis] Axis ifrs-full:RangeAxis
2547 Ranges [member] Member ifrs-full:RangesMember
2548 Actuarial assumptions [axis] Axis ifrs-full:ActuarialAssumptionsAxis
2549 Actuarial assumptions [member] Member ifrs-full:ActuarialAssumptionsMember
2550 Discount rate [Member] Member ifrs-full:ActuarialAssumptionOfDiscountRatesMember
2551 Salary Level [Member] Member ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember
2552 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
2553 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
2554 Retirement Pension Premium Plan [Member] Member cib:RetirementPensionPremiumPlanMember
2555 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
2556 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
2557 Increase and Decrease Level [Axis] Axis cib:IncreaseAndDecreaseLevelAxis
2558 Increase And Decrease Level [Domain] Member cib:IncreaseAndDecreaseLevelDomain
2559 Increase [Member] Member cib:IncreaseLevelMember
2560 Decrease [Member] Member cib:DecreaseLevelMember
2561 Disclosure of employee benefit plans [Line Items] LineItems cib:DisclosureOfEmployeeBenefitPlansLineItems
2562 Discount rate Value Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfDiscountRates
2563 Percentage of Increase Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleIncreaseInActuarialAssumption
2564 Percentage of Decrease Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleDecreaseInActuarialAssumption
2565 Effect on DBO Increase Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption
2566 Effect on DBO Decrease Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption
2567 1186 - Disclosure - EMPLOYEE BENEFIT PLANS (Details 14) Network

*

*

http://www.grupobancolombia.com/role/EmployeeBenefitPlansDetails14
2568 Disclosure of employee benefit plans [Table] Table

*

*

cib:DisclosureOfEmployeeBenefitPlansTable
2569 Range [Axis] Axis ifrs-full:RangeAxis
2570 Ranges [member] Member ifrs-full:RangesMember
2571 Actuarial assumptions [axis] Axis ifrs-full:ActuarialAssumptionsAxis
2572 Actuarial assumptions [member] Member ifrs-full:ActuarialAssumptionsMember
2573 Discount rate [Member] Member ifrs-full:ActuarialAssumptionOfDiscountRatesMember
2574 Salary Level [Member] Member ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember
2575 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
2576 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
2577 Severance obligation [Member] Member cib:SeveranceObligationMember
2578 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
2579 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
2580 Bancolombia [Member] Member cib:BancolombiaMember
2581 Increase and Decrease Level [Axis] Axis cib:IncreaseAndDecreaseLevelAxis
2582 Increase And Decrease Level [Domain] Member cib:IncreaseAndDecreaseLevelDomain
2583 Increase [Member] Member cib:IncreaseLevelMember
2584 Decrease [Member] Member cib:DecreaseLevelMember
2585 Disclosure of employee benefit plans [Line Items] LineItems cib:DisclosureOfEmployeeBenefitPlansLineItems
2586 Discount rate Value Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfDiscountRates
2587 Salary rate Value Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases
2588 Percentage of Increase Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleIncreaseInActuarialAssumption
2589 Percentage of Decrease Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleDecreaseInActuarialAssumption
2590 Effect on DBO Increase Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption
2591 Effect on DBO Decrease Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption
2592 1187 - Disclosure - EMPLOYEE BENEFIT PLANS (Details 15) Network

*

*

http://www.grupobancolombia.com/role/EmployeeBenefitPlansDetails15
2593 Disclosure of employee benefit plans [Table] Table

*

*

cib:DisclosureOfEmployeeBenefitPlansTable
2594 Range [Axis] Axis ifrs-full:RangeAxis
2595 Ranges [member] Member ifrs-full:RangesMember
2596 Actuarial assumptions [axis] Axis ifrs-full:ActuarialAssumptionsAxis
2597 Actuarial assumptions [member] Member ifrs-full:ActuarialAssumptionsMember
2598 Discount rate [Member] Member ifrs-full:ActuarialAssumptionOfDiscountRatesMember
2599 Salary Level [Member] Member ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember
2600 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
2601 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
2602 Senior Management Pension Premium Plan [Member] Member cib:SeniorManagementPensionPremiumPlanMember
2603 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
2604 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
2605 Bancolombia [Member] Member cib:BancolombiaMember
2606 Level [Axis] Axis cib:LevelAxis
2607 Level [Domain] Member cib:LevelDomain
2608 Increase [Member] Member cib:IncreaseLevelMember
2609 Decrease [Member] Member cib:DecreaseLevelMember
2610 Disclosure of employee benefit plans [Line Items] LineItems cib:DisclosureOfEmployeeBenefitPlansLineItems
2611 Discount rate Value Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfDiscountRates
2612 Salary rate Value Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases
2613 Percentage of Increase Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleIncreaseInActuarialAssumption
2614 Percentage of Decrease Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleDecreaseInActuarialAssumption
2615 Effect on DBO Increase Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption
2616 Effect on DBO Decrease Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption
2617 1188 - Disclosure - EMPLOYEE BENEFIT PLANS (Details 16) Network

*

*

http://www.grupobancolombia.com/role/EmployeeBenefitPlansDetails16
2618 Disclosure of employee benefit plans [Table] Table

*

*

cib:DisclosureOfEmployeeBenefitPlansTable
2619 Range [Axis] Axis ifrs-full:RangeAxis
2620 Ranges [member] Member ifrs-full:RangesMember
2621 Actuarial assumptions [axis] Axis ifrs-full:ActuarialAssumptionsAxis
2622 Actuarial assumptions [member] Member ifrs-full:ActuarialAssumptionsMember
2623 Actuarial assumption of discount rates [member] Member ifrs-full:ActuarialAssumptionOfDiscountRatesMember
2624 Actuarial assumption of expected rates of salary increases [member] Member ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember
2625 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
2626 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
2627 Senior Management Pension Plan Premium [Member] Member cib:SeniorManagementPensionPlanPremiumMember
2628 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
2629 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
2630 Banagricola S.A. [Member] Member cib:BanagricolaSaMember
2631 Level [Axis] Axis cib:LevelAxis
2632 Level [Domain] Member cib:LevelDomain
2633 Increase Level [Member] Member cib:IncreaseLevelMember
2634 Decrease Level [Member] Member cib:DecreaseLevelMember
2635 Disclosure of employee benefit plans [Line Items] LineItems cib:DisclosureOfEmployeeBenefitPlansLineItems
2636 Discount rate Value Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfDiscountRates
2637 Salary rate Value Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases
2638 Percentage of Increase Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleIncreaseInActuarialAssumption
2639 Percentage of Decrease Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleDecreaseInActuarialAssumption
2640 Effect on DBO Increase Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption
2641 Effect on DBO Decrease Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption
2642 1189 - Disclosure - EMPLOYEE BENEFIT PLANS (Details 17) Network

*

*

http://www.grupobancolombia.com/role/EmployeeBenefitPlansDetails17
2643 Disclosure of employee benefit plans [Table] Table

*

*

cib:DisclosureOfEmployeeBenefitPlansTable
2644 Actuarial assumptions [axis] Axis ifrs-full:ActuarialAssumptionsAxis
2645 Actuarial assumptions [member] Member ifrs-full:ActuarialAssumptionsMember
2646 Actuarial assumption of discount rates [member] Member ifrs-full:ActuarialAssumptionOfDiscountRatesMember
2647 Actuarial assumption of expected rates of salary increases [member] Member ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember
2648 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
2649 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
2650 Senior Management Pension Plan Premium [Member] Member cib:SeniorManagementPensionPlanPremiumMember
2651 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
2652 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
2653 Banistmo S.A. [Member] Member cib:BanistmoSaMember
2654 Level [Axis] Axis cib:LevelAxis
2655 Level [Domain] Member cib:LevelDomain
2656 Increase Level [Member] Member cib:IncreaseLevelMember
2657 Decrease Level [Member] Member cib:DecreaseLevelMember
2658 Disclosure of employee benefit plans [Line Items] LineItems cib:DisclosureOfEmployeeBenefitPlansLineItems
2659 Discount rate Value Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfDiscountRates
2660 Salary rate Value Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases
2661 Percentage of Increase Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleIncreaseInActuarialAssumption
2662 Percentage of Decrease Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleDecreaseInActuarialAssumption
2663 Effect on DBO Increase Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption
2664 Effect on DBO Decrease Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption
2665 1190 - Disclosure - EMPLOYEE BENEFIT PLANS (Details 18) Network

*

*

http://www.grupobancolombia.com/role/EmployeeBenefitPlansDetails18
2666 Disclosure of employee benefit plans [Table] Table

*

*

cib:DisclosureOfEmployeeBenefitPlansTable
2667 Range [Axis] Axis ifrs-full:RangeAxis
2668 Ranges [member] Member ifrs-full:RangesMember
2669 Actuarial assumptions [axis] Axis ifrs-full:ActuarialAssumptionsAxis
2670 Actuarial assumptions [member] Member ifrs-full:ActuarialAssumptionsMember
2671 Discount rate [Member] Member ifrs-full:ActuarialAssumptionOfDiscountRatesMember
2672 Mortality Table [Member] Member ifrs-full:OtherMaterialActuarialAssumptionsMember
2673 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
2674 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
2675 Pension plans [Member] Member cib:PensionPlansMember
2676 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
2677 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
2678 Banistmo [Member] Member cib:BanistmoMember
2679 Pension Plan Banistmo level [Axis] Axis cib:PensionPlanBanistmoLevelAxis
2680 Pension Plan Banistmo level [Domain] Member cib:PensionPlanBanistmoLevelDomain
2681 Increase [Member] Member cib:IncreaseLevelMember
2682 Decrease [Member] Member cib:DecreaseLevelMember
2683 Disclosure of employee benefit plans [Line Items] LineItems cib:DisclosureOfEmployeeBenefitPlansLineItems
2684 Discount rate Value Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfDiscountRates
2685 Mortality Table Value Concept (Text/String) For Period cib:OtherMaterialActuarialAssumptionsMortalityValue
2686 Percentage of Increase Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleIncreaseInActuarialAssumption
2687 Percentage of Decrease Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleDecreaseInActuarialAssumption
2688 Mortality Table (Increase/Decrease) Concept (Text/String) For Period ifrs-full:DescriptionOfMethodsAndAssumptionsUsedInPreparingSensitivityAnalysisForActuarialAssumptions
2689 Effect on DBO Increase Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption
2690 Effect on DBO Decrease Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption
2691 1191 - Disclosure - EMPLOYEE BENEFIT PLANS (Details 19) Network

*

*

http://www.grupobancolombia.com/role/EmployeeBenefitPlansDetails19
2692 Disclosure of employee benefit plans [Table] Table

*

*

cib:DisclosureOfEmployeeBenefitPlansTable
2693 Range [Axis] Axis ifrs-full:RangeAxis
2694 Ranges [member] Member ifrs-full:RangesMember
2695 Actuarial assumptions [axis] Axis ifrs-full:ActuarialAssumptionsAxis
2696 Actuarial assumptions [member] Member ifrs-full:ActuarialAssumptionsMember
2697 Discount rate [Member] Member ifrs-full:ActuarialAssumptionOfDiscountRatesMember
2698 Salary Level [Member] Member ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember
2699 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
2700 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
2701 Other long term benefits [Member] Member cib:OtherLongTermBenefitsMember
2702 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
2703 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
2704 Colombia [Member] Member country:CO
2705 Colombia Level [Axis] Axis cib:ColombiaLevelAxis
2706 Colombia Level [Domain] Member cib:ColombiaLevelDomain
2707 Increase [Member] Member cib:IncreaseLevelMember
2708 Decrease [Member] Member cib:DecreaseLevelMember
2709 Disclosure of employee benefit plans [Line Items] LineItems cib:DisclosureOfEmployeeBenefitPlansLineItems
2710 Discount rate Value Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfDiscountRates
2711 Salary rate Value Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases
2712 Percentage of Increase Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleIncreaseInActuarialAssumption
2713 Percentage of Decrease Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleDecreaseInActuarialAssumption
2714 Effect on DBO Increase Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption
2715 Effect on DBO Decrease Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption
2716 1192 - Disclosure - EMPLOYEE BENEFIT PLANS (Details 20) Network

*

*

http://www.grupobancolombia.com/role/EmployeeBenefitPlansDetails20
2717 Disclosure of employee benefit plans [Table] Table

*

*

cib:DisclosureOfEmployeeBenefitPlansTable
2718 Range [Axis] Axis ifrs-full:RangeAxis
2719 Ranges [member] Member ifrs-full:RangesMember
2720 Actuarial assumptions [axis] Axis ifrs-full:ActuarialAssumptionsAxis
2721 Actuarial assumptions [member] Member ifrs-full:ActuarialAssumptionsMember
2722 Discount rate [Member] Member ifrs-full:ActuarialAssumptionOfDiscountRatesMember
2723 Salary Level [Member] Member ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember
2724 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
2725 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
2726 Other long term benefits [Member] Member cib:OtherLongTermBenefitsMember
2727 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
2728 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
2729 EL SALVADOR [Member] Member country:SV
2730 El Salvador Level [Axis] Axis cib:ElSalvadorLevelAxis
2731 El Salvador Level [Domain] Member cib:ElSalvadorLevelDomain
2732 Decrease [Member] Member cib:DecreaseLevelMember
2733 Increase [Member] Member cib:IncreaseLevelMember
2734 Disclosure of employee benefit plans [Line Items] LineItems cib:DisclosureOfEmployeeBenefitPlansLineItems
2735 Discount rate Value Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfDiscountRates
2736 Salary rate Value Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases
2737 Percentage of Increase Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleIncreaseInActuarialAssumption
2738 Percentage of Decrease Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleDecreaseInActuarialAssumption
2739 Effect on DBO Increase Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption
2740 Effect on DBO Decrease Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption
2741 1193 - Disclosure - EMPLOYEE BENEFIT PLANS (Details 21) Network

*

*

http://www.grupobancolombia.com/role/EmployeeBenefitPlansDetails21
2742 Disclosure of employee benefit plans [Table] Table

*

*

cib:DisclosureOfEmployeeBenefitPlansTable
2743 Range [Axis] Axis ifrs-full:RangeAxis
2744 Ranges [member] Member ifrs-full:RangesMember
2745 Actuarial assumptions [axis] Axis ifrs-full:ActuarialAssumptionsAxis
2746 Actuarial assumptions [member] Member ifrs-full:ActuarialAssumptionsMember
2747 Discount rate [Member] Member ifrs-full:ActuarialAssumptionOfDiscountRatesMember
2748 Salary Level [Member] Member ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember
2749 Mortality Table [Member] Member ifrs-full:OtherMaterialActuarialAssumptionsMember
2750 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
2751 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
2752 Other long term benefits [Member] Member cib:OtherLongTermBenefitsMember
2753 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
2754 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
2755 Guatemala [Member] Member country:GT
2756 Guatemala Level [Axis] Axis cib:GuatemalaLevelAxis
2757 Guatemala Level [Domain] Member cib:GuatemalaLevelDomain
2758 Increase [Member] Member cib:IncreaseLevelMember
2759 Decrease [Member] Member cib:DecreasesLevelMember
2760 Disclosure of employee benefit plans [Line Items] LineItems cib:DisclosureOfEmployeeBenefitPlansLineItems
2761 Discount rate Value Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfDiscountRates
2762 Salary rate Value Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases
2763 Mortality Table Value Concept (Text/String) For Period cib:OtherMaterialActuarialAssumptionsMortalityValue
2764 Percentage of Increase Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleIncreaseInActuarialAssumption
2765 Percentage of Decrease Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleDecreaseInActuarialAssumption
2766 Mortality Table (Increase/Decrease) Concept (Text/String) For Period ifrs-full:DescriptionOfMethodsAndAssumptionsUsedInPreparingSensitivityAnalysisForActuarialAssumptions
2767 Effect on DBO Increase Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption
2768 Effect on DBO Decrease Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption
2769 1194 - Disclosure - EMPLOYEE BENEFIT PLANS (Details Textual) Network

*

*

http://www.grupobancolombia.com/role/EmployeeBenefitPlansDetailsTextual
2770 Disclosure of employee benefit plans [Table] Table

*

*

cib:DisclosureOfEmployeeBenefitPlansTable
2771 Participants [Axis] Axis cib:ParticipantsAxis
2772 Participants [Domain] Member cib:ParticipantsDomain
2773 Participants receiving benefits [Member] Member cib:ParticipantsReceivingBenefitsMember
2774 Employees of Banco Agricola and its subsidiaries [Member] Member cib:EmployeesOfBancoAgricolaAndItsSubsidiariesMember
2775 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
2776 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
2777 Severance obligation [Member] Member cib:SeveranceObligationMember
2778 Retirement and senior management pension plan [Member] Member cib:RetirementAndSeniorManagementPensionPlanMember
2779 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
2780 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
2781 Banistmo [Member] Member cib:BanistmoMember
2782 EL SALVADOR [Member] Member country:SV
2783 Characteristics of defined benefit plans [axis] Axis ifrs-full:CharacteristicsOfDefinedBenefitPlansAxis
2784 Characteristics of defined benefit plans [member] Member ifrs-full:CharacteristicsOfDefinedBenefitPlansMember
2785 Grupo Agromercantil Holding [Member] Member cib:GrupoAgromercantilHoldingMember
2786 Range [Axis] Axis ifrs-full:RangeAxis
2787 Ranges [member] Member ifrs-full:RangesMember
2788 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
2789 Top of range [member] Member ifrs-full:TopOfRangeMember
2790 Period [Axis] Axis cib:PeriodAxis
2791 Period [Domain] Member cib:PeriodDomain
2792 Employees Services Above Sixty years age [Member] Member cib:EmployeesServicesAboveSixtyYearsAgeMember
2793 Employees Services Above forty years age [Member] Member cib:EmployeesServicesAboveFortyYearsAgeMember
2794 Disclosure of employee benefit plans [Line Items] LineItems cib:DisclosureOfEmployeeBenefitPlansLineItems
2795 Current service cost and interest cost Concept (Monetary) For Period Credit cib:CurrentServiceCostAndInterestCost
2796 Actuarial gains (losses) arising from changes in demographic assumptions, net defined benefit liability (asset) Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInDemographicAssumptionsNetDefinedBenefitLiabilityAsset
2797 Short-term employee benefits accruals Concept (Monetary) As Of Credit ifrs-full:ShorttermEmployeeBenefitsAccruals
2798 Number of participants of retirement benefit plan receiving benefits Concept (Decimal) For Period ifrs-full:NumberOfParticipantsOfRetirementBenefitPlanReceivingBenefits
2799 Description of plan amendments, curtailments and settlements Concept (Text/String) For Period ifrs-full:DescriptionOfPlanAmendmentsCurtailmentsAndSettlements
2800 Description of retirement benefits promised to participants Concept (Text/String) For Period ifrs-full:DescriptionOfRetirementBenefitsPromisedToParticipants
2801 Percentage of Monthly Nominal Wage in Retirement Pension Plan Concept (Percent) For Period cib:PercentageOfMonthlyNominalWageInRetirementPensionPlan
2802 Actuarial assumption of mortality rates (in years) Concept (Decimal) As Of ifrs-full:ActuarialAssumptionOfMortalityRates
2803 1195 - Disclosure - OTHER LIABILITIES (Details) Network

*

*

http://www.grupobancolombia.com/role/OtherLiabilitiesDetails
2804 Implied Table Table

*

*

implied:Table
2805 Disclosure Of Other Liabilities Explanatory [Abstract] Abstract cib:DisclosureOfOtherLiabilitiesExplanatoryAbstract
2806 Payables Concept (Monetary) As Of Credit ifrs-full:OtherPayables
2807 Suppliers Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayablesToTradeSuppliers
2808 Advances Concept (Monetary) As Of Credit ifrs-full:Advances
2809 Collection services Concept (Monetary) As Of Credit cib:CollectionServices
2810 Security contributions Concept (Monetary) As Of Credit cib:SecurityContributions
2811 Employee benefits and bonuses Concept (Monetary) As Of Credit cib:EmployeeBenefitsAndBonuses
2812 Salaries and other labor obligations Concept (Monetary) As Of Credit cib:SalariesAndOtherLaborObligations
2813 Deferred interests Concept (Monetary) As Of Credit ifrs-full:InterestPayable
2814 Advances received in leasing operations and loans Concept (Monetary) As Of Credit cib:AdvancesReceivedInLeasingOperationsAndLoans
2815 Liabilities from contracts with customers Concept (Monetary) As Of Credit ifrs-full:CurrentContractLiabilities
2816 Provisions Concept (Monetary) As Of Credit cib:OtherProvision
2817 Dividends Concept (Monetary) As Of Credit ifrs-full:DividendPayables
2818 Other Concept (Monetary) As Of Credit ifrs-full:OtherCurrentLiabilities
2819 Total Concept (Monetary) As Of Credit ifrs-full:OtherLiabilities
2820 1196 - Disclosure - OTHER LIABILITIES (Details Textual) Network

*

*

http://www.grupobancolombia.com/role/OtherLiabilitiesDetailsTextual
2821 Disclosure Of Other Liabilities Explanatory [Table] Table

*

*

cib:DisclosureOfOtherLiabilitiesExplanatoryTable
2822 Fiscal year [Axis] Axis cib:FiscalYearAxis
2823 Fiscal year [Domain] Member cib:FiscalYearDomain
2824 Disclosure Of Other Liabilities Explanatory [Line Items] LineItems cib:DisclosureOfOtherLiabilitiesExplanatoryLineItems
2825 Gain on derivatives first day valuation Concept (Monetary) As Of Credit cib:GainOnDerivativesFirstDayValuation
2826 Balances related to insurance operations Concept (Monetary) As Of Credit cib:BalancesRelatedToInsuranceOperations
2827 Balances held by court order Concept (Monetary) As Of Credit cib:BalancesHeldByCourtOrder
2828 Bank overdrafts Concept (Monetary) As Of Credit ifrs-full:BankOverdraftsClassifiedAsCashEquivalents
2829 Current accrued expenses and other current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentAccruedExpensesAndOtherCurrentLiabilities
2830 Balance Related To Foreign Currency Transactions Concept (Monetary) As Of Debit cib:BalanceRelatedToForeignCurrencyTransactions
2831 1197 - Disclosure - PROVISIONS AND CONTINGENT LIABILITIES (Details) Network

*

*

http://www.grupobancolombia.com/role/ProvisionsAndContingentLiabilitiesDetails
2832 Disclosure Of Provisions And Contingent Liabilites [Table] Table

*

*

cib:DisclosureOfProvisionsAndContingentLiabilitesTable
2833 Classes of other provisions [axis] Axis ifrs-full:ClassesOfProvisionsAxis
2834 Other provisions [member] Member ifrs-full:OtherProvisionsMember
2835 Legal proceedings provision [member] Member ifrs-full:LegalProceedingsProvisionMember
2836 Administrative proceedings provision [Member] Member cib:AdministrativeProceedingsProvisionMember
2837 Financial guarantees provision [Member] Member cib:FinancialGuaranteesProvisionMember
2838 Loan commitments [member] Member ifrs-full:LoanCommitmentsMember
2839 Onerous contracts provision [member] Member ifrs-full:OnerousContractsProvisionMember
2840 Financial effect of transition from previous GAAP to IFRSs [axis] Axis ifrs-full:FinancialEffectOfTransitionFromPreviousGAAPToIFRSsAxis
2841 IFRSs [member] Member ifrs-full:IFRSsMember
2842 Effect of transition to IFRSs [member] Member ifrs-full:EffectOfTransitionToIFRSsMember
2843 Disclosure Of Provisions And Contingent Liabilites [Line Items] LineItems cib:DisclosureOfProvisionsAndContingentLiabilitesLineItems
2844 Initial balance at beginning Concept (Monetary) As Of Credit ifrs-full:OtherProvisions
2845 Additions recognized in the year Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseInExistingProvisionsOtherProvisions
2846 Provisions used during the period Concept (Monetary) For Period Debit ifrs-full:ProvisionUsedOtherProvisions
2847 Provisions reversed during the period Concept (Monetary) For Period Debit ifrs-full:UnusedProvisionReversedOtherProvisions
2848 Foreign currency translation adjustment Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesOtherProvisions
2849 Effect of discounted cash flows Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangeInDiscountRateOtherProvisions
2850 Final balance at the end of the period Concept (Monetary) As Of Credit ifrs-full:OtherProvisions
2851 Effect Of Adoption Of Ifrs 9 Concept (Monetary) For Period Credit cib:EffectOfAdoptionOfIfrs9
2852 1198 - Disclosure - PROVISIONS AND CONTINGENT LIABILITIES (Details 1) Network

*

*

http://www.grupobancolombia.com/role/ProvisionsAndContingentLiabilitiesDetails1
2853 Disclosure Of Provisions And Contingent Liabilites [Table] Table

*

*

cib:DisclosureOfProvisionsAndContingentLiabilitesTable
2854 Type of measurement of expected credit losses [axis] Axis ifrs-full:TypeOfMeasurementOfExpectedCreditLossesAxis
2855 Type of measurement of expected credit losses [member] Member ifrs-full:TypeOfMeasurementOfExpectedCreditLossesMember
2856 12-month expected credit losses [member] Member ifrs-full:TwelvemonthExpectedCreditLossesMember
2857 Life time Expected Credit Losses Not Credit impaired Member [Member] Member cib:LifeTimeExpectedCreditLossesNotCreditImpairedMemberMember
2858 Life time Expected Credit Losses Credit impaired Member [Member] Member cib:LifeTimeExpectedCreditLossesCreditImpairedMemberMember
2859 Financial Guarantees And Loan Commitments [Axis] Axis cib:FinancialGuaranteesAndLoanCommitmentsAxis
2860 Financial Guarantees And Loan Commitments [Domain] Member cib:FinancialGuaranteesAndLoanCommitmentsDomain
2861 Stage 1 Member cib:FinancialGuaranteesAndLoanCommitmentsStageOneMember
2862 Stage 2 Member cib:FinancialGuaranteesAndLoanCommitmentsStageTwoMember
2863 Stage 3 Member cib:FinancialGuaranteesAndLoanCommitmentsStageThreeMember
2864 Disclosure Of Provisions And Contingent Liabilites [Line Items] LineItems cib:DisclosureOfProvisionsAndContingentLiabilitesLineItems
2865 Beginning balance Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
2866 Net remeasurement of loss allowance Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangesInModelsOrRiskParametersExposureToCreditRiskOnLoanCommitmentsAndFinancialGuaranteeContracts
2867 Provisions used during the period Concept (Monetary) For Period Debit ifrs-full:ProvisionUsedOtherProvisions
2868 Provisions reversed during the period Concept (Monetary) For Period Debit ifrs-full:UnusedProvisionReversedOtherProvisions
2869 Translation adjustment Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesOtherProvisions
2870 Ending balance Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
2871 1199 - Disclosure - PROVISIONS AND CONTINGENT LIABILITIES (Details 2) Network

*

*

http://www.grupobancolombia.com/role/ProvisionsAndContingentLiabilitiesDetails2
2872 Disclosure Of Provisions And Contingent Liabilites [Table] Table

*

*

cib:DisclosureOfProvisionsAndContingentLiabilitesTable
2873 Maturity [axis] Axis ifrs-full:MaturityAxis
2874 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
2875 Not later than one month [member] Member ifrs-full:NotLaterThanOneMonthMember
2876 Later than one month and not later than three months [member] Member ifrs-full:LaterThanOneMonthAndNotLaterThanThreeMonthsMember
2877 Later than three months and not later than one year [member] Member ifrs-full:LaterThanThreeMonthsAndNotLaterThanOneYearMember
2878 Later than three years and not later than five years [member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFiveYearsMember
2879 Later than five years [member] Member ifrs-full:LaterThanFiveYearsMember
2880 Later than one year and not later than three years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanThreeYearsMember
2881 Disclosure Of Provisions And Contingent Liabilites [Line Items] LineItems cib:DisclosureOfProvisionsAndContingentLiabilitesLineItems
2882 Financial Guarantees Concept (Monetary) As Of Credit cib:FinancialGuarantees
2883 1200 - Disclosure - PROVISIONS AND CONTINGENT LIABILITIES (Details 3) Network

*

*

http://www.grupobancolombia.com/role/ProvisionsAndContingentLiabilitiesDetails3
2884 Implied Table Table

*

*

implied:Table
2885 Disclosure Of Provisions And Contingent Liabilities [Abstract] Abstract cib:DisclosureOfProvisionsAndContingentLiabilitiesAbstract
2886 Contingent Liabilities Concept (Monetary) As Of Credit cib:ContingentLiabilities
2887 Revocatory Action Claim Concept (Text/String) For Period cib:RevocatoryActionClaim
2888 Contingent Liabilitiies Decision Concept (Text/String) For Period cib:ContingentLiabilitiiesDecision
2889 1201 - Disclosure - PROVISIONS AND CONTINGENT LIABILITIES (Details Textual ) Network

*

*

http://www.grupobancolombia.com/role/ProvisionsAndContingentLiabilitiesDetailsTextual
2890 Disclosure Of Capital [Table] Table

*

*

cib:DisclosureOfCapitalTable
2891 Plaintiff name [Axis] Axis cib:PlaintiffNameAxis
2892 Plaintiff name [Domain] Member cib:PlaintiffNameDomain
2893 Municipality of chia [Member] Member cib:MunicipalityOfChiaMember
2894 Melenao Mora and Said Diaz [Member] Member cib:MelenaoMoraAndSaidDiazMember
2895 Deniss Rafael Perez Perozo and others [Member] Member cib:DenissRafaelPerezPerozoAndOthersMember
2896 Corporacion de Alimentos S.A. de CV [Member] Member cib:CorporacionDeAlimentosSaDeCvMember
2897 North Shore Development Company [Member] Member cib:NorthShoreDevelopmentCompanyMember
2898 Superintendence Of Tax Administration [Member] Member cib:SuperintendenceOfTaxAdministrationMember
2899 Tax Authority [Member] Member cib:TaxAuthorityMember
2900 Colombia Direccion De Impuestos Y Aduanas [Member] Member cib:ColombiaDireccionDeImpuestosYAduanasMember
2901 Separate management entities [axis] Axis ifrs-full:SeparateManagementEntitiesAxis
2902 Separate management entities [member] Member ifrs-full:SeparateManagementEntitiesMember
2903 Promotara Terramar [Member] Member cib:PromotaraTerramarMember
2904 Consolidated structured entities [axis] Axis ifrs-full:ConsolidatedStructuredEntitiesAxis
2905 Entity's total for consolidated structured entities [member] Member ifrs-full:EntitysTotalForConsolidatedStructuredEntitiesMember
2906 HSBC Bank [Member] Member cib:HsbcBankMember
2907 Defendant name [Axis] Axis cib:DefendantNameAxis
2908 Defendant name [Domain] Member cib:DefendantNameDomain
2909 Bancolombia [Member] Member cib:BancolombiaMember
2910 Banistmo [Member] Member cib:BanistmoMember
2911 Banco Agromercantil [Member] Member cib:BancoAgromercantilMember
2912 BAM And Mercom Bank [Member] Member cib:BAMAndMercomBankMember
2913 Banagricola S.A. [Member] Member cib:BanagricolaSaMember
2914 Disclosure Of Capital [Line Items] LineItems cib:DisclosureOfCapitalLineItems
2915 Value of damages sought by the plaintiff Concept (Monetary) For Period Debit cib:ValueOfDamagesSoughtByPlaintiff
2916 Amount received through irregular means by other entity Concept (Monetary) For Period Debit cib:AmountReceivedThroughIrregularMeansByOtherEntity
2917 Share of the company in amount received through irregular means Concept (Monetary) For Period Debit cib:ShareOfCompanyInAmountReceivedThroughIrregularMeans
2918 Other provisions Concept (Monetary) As Of Credit ifrs-full:OtherProvisions
2919 1202 - Disclosure - CAPITAL (Details) Network

*

*

http://www.grupobancolombia.com/role/CapitalDetails
2920 Disclosure Of Capital [Table] Table

*

*

cib:DisclosureOfCapitalTable
2921 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
2922 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
2923 Ordinary shares [member] Member ifrs-full:OrdinarySharesMember
2924 Preference shares [member] Member ifrs-full:PreferenceSharesMember
2925 Disclosure Of Capital [Line Items] LineItems cib:DisclosureOfCapitalLineItems
2926 Authorized shares Concept (Shares) As Of ifrs-full:NumberOfSharesAuthorised
2927 Shares with a nominal value of COP 500 pesos Concept (Shares) As Of ifrs-full:NumberOfSharesIssuedAndFullyPaid
2928 Total shares Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
2929 Subscribed and paid capital (nominal value) Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
2930 1203 - Disclosure - CAPITAL (Details) (Parenthetical) Network

*

*

http://www.grupobancolombia.com/role/CapitalDetailsParenthetical
2931 Disclosure Of Capital [Table] Table

*

*

cib:DisclosureOfCapitalTable
2932 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
2933 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
2934 Ordinary shares [member] Member ifrs-full:OrdinarySharesMember
2935 Preference shares [member] Member ifrs-full:PreferenceSharesMember
2936 Disclosure Of Capital [Line Items] LineItems cib:DisclosureOfCapitalLineItems
2937 Par value per share Concept (Share) As Of ifrs-full:ParValuePerShare
2938 1204 - Disclosure - CAPITAL (Details 1) Network

*

*

http://www.grupobancolombia.com/role/CapitalDetails1
2939 Disclosure Of Capital [Table] Table

*

*

cib:DisclosureOfCapitalTable
2940 Period [Axis] Axis cib:PeriodAxis
2941 Period [Domain] Member cib:PeriodDomain
2942 2017 Member cib:YearOneMember
2943 2016 Member cib:YearTwoMember
2944 2015 Member cib:YearThreeMember
2945 2014 Member cib:YearFourMember
2946 2013 Member cib:YearFiveMember
2947 2012 Member cib:YearSixMember
2948 Disclosure Of Capital [Line Items] LineItems cib:DisclosureOfCapitalLineItems
2949 Cash dividends per share Concept (Share) For Period cib:CashDividendsPerShare
2950 1205 - Disclosure - CAPITAL (Details Textual) Network

*

*

http://www.grupobancolombia.com/role/CapitalDetailsTextual
2951 Implied Table Table

*

*

implied:Table
2952 Disclosure Of Capital [Abstract] Abstract cib:DisclosureOfCapitalAbstract
2953 Description Of conditions for declaration of dividend Concept (Text/String) For Period cib:DescriptionOfConditionsForDeclarationOfDividend
2954 1206 - Disclosure - APPROPRIATED RESERVES (Details) Network

*

*

http://www.grupobancolombia.com/role/AppropriatedReservesDetails
2955 Disclosure Of Appropiated Reserves [Table] Table

*

*

cib:DisclosureOfAppropiatedReservesTable
2956 Reserves within equity [axis] Axis ifrs-full:ReservesWithinEquityAxis
2957 Other reserves [member] Member ifrs-full:OtherReservesMember
2958 Appropriation of net income [Member] Member cib:AppropriationOfNetIncomeMember
2959 Fiscal provisions [Member] Member cib:FiscalProvisionsMember
2960 Others [Member] Member cib:OthersMember
2961 RESERVES [Axis] Axis cib:ReservesAxis
2962 RESERVES [Domain] Member cib:ReservesDomain
2963 Appropriated Reserves [Member] Member cib:AppropriatedReservesMember
2964 Disclosure Of Appropiated Reserves [Line Items] LineItems cib:DisclosureOfAppropiatedReservesLineItems
2965 Other reserves Concept (Monetary) As Of Credit ifrs-full:OtherReserves
2966 1207 - Disclosure - APPROPRIATED RESERVES (Details Textual) Network

*

*

http://www.grupobancolombia.com/role/AppropriatedReservesDetailsTextual
2967 Implied Table Table

*

*

implied:Table
2968 Disclosure Of Appropriated Reserves [Abstract] Abstract cib:DisclosureOfAppropriatedReservesAbstract
2969 Explanation of terms to maintain non distributable reserve Concept (Text/String) For Period cib:ExplanationOfTermsToMaintainNonDistributableReserve
2970 1208 - Disclosure - UNCONSOLIDATED STRUCTURED ENTITIES (Details) Network

*

*

http://www.grupobancolombia.com/role/UnconsolidatedStructuredEntitiesDetails
2971 Disclosure of unconsolidated structured entities [table] Table

*

*

ifrs-full:DisclosureOfUnconsolidatedStructuredEntitiesTable
2972 Unconsolidated structured entities [axis] Axis ifrs-full:UnconsolidatedStructuredEntitiesAxis
2973 Entity's total for unconsolidated structured entities [member] Member ifrs-full:EntitysTotalForUnconsolidatedStructuredEntitiesMember
2974 Securitisation [Member] Member cib:SecuritisationMember
2975 Bank's managed funds [Member] Member cib:BanksManagedFundsMember
2976 Total [Member] Member cib:TotalMember
2977 Disclosure of unconsolidated structured entities [line items] LineItems ifrs-full:DisclosureOfUnconsolidatedStructuredEntitiesLineItems
2978 Total assets of the entities Concept (Monetary) As Of Debit cib:TotalAssetsOfEntities
2979 Investments at fair value through profit or loss Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLoss
2980 Investments at fair value through other comprehensive income Concept (Monetary) As Of Debit ifrs-full:FairValueOfInvestmentsInEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeAtDateOfDerecognition
2981 Loans and advances to customers Concept (Monetary) As Of Debit ifrs-full:LoansAndAdvancesToCustomers
2982 Total assets in relation to The Bank's interests in the unconsolidated structured entities Concept (Monetary) As Of Debit ifrs-full:AssetsRecognisedInEntitysFinancialStatementsInRelationToStructuredEntities
2983 The Bank's maximum exposure Concept (Monetary) As Of ifrs-full:MaximumExposureToLossFromInterestsInStructuredEntities
2984 1209 - Disclosure - OPERATING INCOME (Details) Network

*

*

http://www.grupobancolombia.com/role/OperatingIncomeDetails
2985 Disclosure of operating income and operating expense [Table] Table

*

*

cib:DisclosureOfOperatingIncomeAndOperatingExpenseTable
2986 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
2987 Assets [member] Member ifrs-full:ClassesOfAssetsMember
2988 Debt Securities [Member] Member ifrs-full:DebtSecuritiesMember
2989 Derivatives [member] Member ifrs-full:DerivativesMember
2990 Spot transactions [Member] Member cib:SpotTransactionsMember
2991 Repos [Member] Member cib:ReposMember
2992 Disclosure of operating income and operating expense [Line Items] LineItems cib:DisclosureOfOperatingIncomeAndOperatingExpenseLineItems
2993 Debt investments, net Concept (Monetary) For Period Credit ifrs-full:TradingIncomeExpenseOnDebtInstruments
2994 Gains (losses) on financial assets at fair value through profit or loss Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss
2995 Total Interest on investment securities Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnHeldtomaturityInvestments
2996 1210 - Disclosure - OPERATING INCOME (Details 1) Network

*

*

http://www.grupobancolombia.com/role/OperatingIncomeDetails1
2997 Implied Table Table

*

*

implied:Table
2998 Disclosure of operating income and operating expense [Abstract] Abstract cib:DisclosureOfOperatingIncomeAndOperatingExpenseAbstract
2999 Deposits Concept (Monetary) For Period Debit ifrs-full:InterestExpenseOnDepositsFromCustomers
3000 Debt securities in issue Concept (Monetary) For Period Debit ifrs-full:InterestExpenseOnDebtInstrumentsIssued
3001 Financial borrowings Concept (Monetary) For Period Debit ifrs-full:InterestExpenseOnBorrowings
3002 Preferred shares Concept (Monetary) For Period Debit cib:InterestExpenseOnPreferredShares
3003 Borrowings from other financial institutions Concept (Monetary) For Period Debit cib:InterestExpenseOnBorrowingsFromOtherFinancialInstitutions
3004 Other interest Concept (Monetary) For Period Debit ifrs-full:InterestExpenseOnOtherFinancialLiabilities
3005 Interest expenses Concept (Monetary) For Period Debit ifrs-full:InterestExpense
3006 1211 - Disclosure - OPERATING INCOME (Details 2) Network

*

*

http://www.grupobancolombia.com/role/OperatingIncomeDetails2
3007 Statement [Table] Table

*

*

us-gaap:StatementTable
3008 Class of Stock [Axis] Axis us-gaap:StatementClassOfStockAxis
3009 Class of Stock [Domain] Member us-gaap:ClassOfStockDomain
3010 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
3011 Products and services [member] Member ifrs-full:ProductsAndServicesMember
3012 Banking services [Member] Member cib:BankingServicesMember
3013 Credit and debit card fees and commercial estabilshments [Member] Member cib:CreditAndDebitCardFeesAndCommercialEstabilshmentsMember
3014 Brokerage [Member] Member cib:BrokerageMember
3015 Acceptances Guarantees and Standby Letters of Credit [Member] Member cib:AcceptancesGuaranteesAndStandbyLettersOfCreditMember
3016 Trust [Member] Member cib:TrustMember
3017 Securities brokerage [Member] Member cib:SecuritiesBrokerageMember
3018 Bancassurance [Member] Member cib:BancassuranceMember
3019 Payment and collections [Member] Member cib:PaymentAndCollectionsMember
3020 Others [Member] Member cib:OthersMember
3021 Segments [axis] Axis ifrs-full:SegmentsAxis
3022 Segments [member] Member ifrs-full:SegmentsMember
3023 Brokerage [Member] Member cib:BrokerageMember
3024 Trust [Member] Member cib:TrustMember
3025 Banking Colombia [Member] Member cib:BankingColombiaMember
3026 Banking Panama [Member] Member cib:BankingPanamaMember
3027 Banking El Salvador [Member] Member cib:BankingElSalvadorMember
3028 Banking Guatemala [Member] Member cib:BankingGuatemalaMember
3029 Investment banking [Member] Member cib:InvestmentBankingMember
3030 Off shore [Member] Member cib:OffShoreMember
3031 Other Segments [Member] Member ifrs-full:AllOtherSegmentsMember
3032 Total before eliminations [Member] Member cib:TotalBeforeEliminationsMember
3033 Adjustments for consolidation purposes [Member] Member cib:AdjustmentsForConsolidationPurposesMember
3034 Total aftere liminations [Member] Member cib:TotalAftereLiminationsMember
3035 Statement [Line Items] LineItems us-gaap:StatementLineItems
3036 Revenue from contracts with customers Abstract ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersAbstract
3037 Revenue from contracts with customers Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
3038 1212 - Disclosure - OPERATING INCOME (Details 3) Network

*

*

http://www.grupobancolombia.com/role/OperatingIncomeDetails3
3039 Implied Table Table

*

*

implied:Table
3040 Disclosure of operating income and operating expense [Abstract] Abstract cib:DisclosureOfOperatingIncomeAndOperatingExpenseAbstract
3041 Receivables from contracts with customers Concept (Monetary) As Of Debit ifrs-full:ReceivablesFromContractsWithCustomers
3042 Contract liabilities Concept (Monetary) As Of Credit ifrs-full:ContractLiabilities
3043 1213 - Disclosure - OPERATING INCOME (Details 4) Network

*

*

http://www.grupobancolombia.com/role/OperatingIncomeDetails4
3044 Implied Table Table

*

*

implied:Table
3045 Disclosure of operating income and operating expense [Abstract] Abstract cib:DisclosureOfOperatingIncomeAndOperatingExpenseAbstract
3046 Banking services Concept (Monetary) For Period Debit cib:BankingServicesExpenses
3047 Call Center and Website Concept (Monetary) For Period Debit cib:CallCenterAndWebsiteExpenses
3048 Others Concept (Monetary) For Period Debit ifrs-full:OtherFeeAndCommissionExpense
3049 Fees and commission expenses Concept (Monetary) For Period Debit ifrs-full:FeeAndCommissionExpense
3050 1214 - Disclosure - OPERATING INCOME (Details 5) Network

*

*

http://www.grupobancolombia.com/role/OperatingIncomeDetails5
3051 Implied Table Table

*

*

implied:Table
3052 Disclosure of operating income and operating expense [Abstract] Abstract cib:DisclosureOfOperatingIncomeAndOperatingExpenseAbstract
3053 Operating leases Concept (Monetary) For Period Credit ifrs-full:OperatingLeaseIncome
3054 Net foreign exchange Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
3055 Derivatives foreign exchange contracts Concept (Monetary) For Period Credit ifrs-full:TradingIncomeExpenseOnForeignExchangeContracts
3056 Services Concept (Monetary) For Period Credit ifrs-full:RevenueFromRenderingOfServices
3057 Investment property valuation Concept (Monetary) For Period ifrs-full:GainsLossesOnFairValueAdjustmentInvestmentProperty
3058 Gains on sale of assets Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnAvailableforsaleFinancialAssets
3059 Insurance Concept (Monetary) For Period Credit ifrs-full:IncomeArisingFromInsuranceContracts
3060 Other reversals Concept (Monetary) For Period Credit ifrs-full:OtherReversalsOfProvisions
3061 Hedging Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnHedgingInstrument
3062 Penalties for failure to contracts Concept (Monetary) For Period Credit ifrs-full:IncomeFromFinesAndPenalties
3063 Others Concept (Monetary) For Period Credit ifrs-full:OtherOperatingIncomeExpense
3064 Total Other operating income Concept (Monetary) For Period Credit ifrs-full:MiscellaneousOtherOperatingIncome
3065 1215 - Disclosure - OPERATING INCOME (Details 6) Network

*

*

http://www.grupobancolombia.com/role/OperatingIncomeDetails6
3066 Disclosure of operating income and operating expense [Table] Table

*

*

cib:DisclosureOfOperatingIncomeAndOperatingExpenseTable
3067 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
3068 Assets [member] Member ifrs-full:ClassesOfAssetsMember
3069 Profits of equity method investees [Member] Member ifrs-full:InvestmentsAccountedForUsingEquityMethodMember
3070 Disclosure of operating income and operating expense [Line Items] LineItems cib:DisclosureOfOperatingIncomeAndOperatingExpenseLineItems
3071 Dividends Concept (Monetary) For Period Debit ifrs-full:DividendsReceived
3072 Equity investments Concept (Monetary) For Period ifrs-full:GainsLossesRecognisedInProfitOrLossFairValueMeasurementAssets
3073 Equity method Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod
3074 Gains (Losses) on sale of Discontinued Operations Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfDiscontinuedOperationsOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
3075 Total dividends received, and share of profits of equity method investees Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
3076 1216 - Disclosure - OPERATING INCOME (Details Textual) Network

*

*

http://www.grupobancolombia.com/role/OperatingIncomeDetailsTextual
3077 Disclosure of operating income and operating expense [Table] Table

*

*

cib:DisclosureOfOperatingIncomeAndOperatingExpenseTable
3078 Continuing and discontinued operations [axis] Axis ifrs-full:ContinuingAndDiscontinuedOperationsAxis
3079 Aggregate continuing and discontinued operations [member] Member ifrs-full:AggregateContinuingAndDiscontinuedOperationsMember
3080 Measurement [axis] Axis ifrs-full:MeasurementAxis
3081 Aggregated measurement [member] Member ifrs-full:AggregatedMeasurementMember
3082 Fair value through profit or loss [Member] Member cib:FairValueThroughProfitOrLossMember
3083 Fair value through other comprehensive income [Member] Member cib:FairValueThroughOtherComprehensiveIncomeMember
3084 Range [Axis] Axis ifrs-full:RangeAxis
3085 Ranges [member] Member ifrs-full:RangesMember
3086 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
3087 Top of range [member] Member ifrs-full:TopOfRangeMember
3088 Disclosure of operating income and operating expense [Line Items] LineItems cib:DisclosureOfOperatingIncomeAndOperatingExpenseLineItems
3089 Interest income (expense) Concept (Monetary) For Period Credit ifrs-full:InterestRevenueExpense
3090 Dividends received Concept (Monetary) For Period Debit ifrs-full:DividendsReceived
3091 Increase (decrease) through cumulative catch-up adjustments to revenue, contract liabilities Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughCumulativeCatchupAdjustmentsToRevenueContractLiabilities
3092 Impairment loss on receivables or contract assets arising from contracts with customers Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossOnReceivablesOrContractAssetsArisingFromContractsWithCustomers
3093 Dividends From Derecognized Investments Concept (Monetary) For Period Credit cib:DividendsFromDerecognizedInvestments
3094 Intermediation Margin Concept (Percent) For Period cib:IntermediationMargin
3095 Gains on disposals of investments Concept (Monetary) For Period Credit ifrs-full:GainsOnDisposalsOfInvestments
3096 1217 - Disclosure - OPERATING EXPENSES (Details) Network

*

*

http://www.grupobancolombia.com/role/OperatingExpensesDetails
3097 Implied Table Table

*

*

implied:Table
3098 Disclosure of operating expenses [Abstract] Abstract cib:DisclosureOfOperatingExpensesAbstract
3099 Maintenance and repairs Concept (Monetary) For Period Debit ifrs-full:RepairsAndMaintenanceExpense
3100 Others Fees Concept (Monetary) For Period Debit cib:OtherFees
3101 Insurance Concept (Monetary) For Period Debit ifrs-full:InsuranceExpense
3102 Leasing Concept (Monetary) For Period Debit ifrs-full:MinimumOperatingLeasePayments
3103 Transport Concept (Monetary) For Period Debit ifrs-full:TransportationExpense
3104 Disputes, fines and sanctions Concept (Monetary) For Period Debit cib:DisputesFinesAndSanctionsExpense
3105 Frauds and claims Concept (Monetary) For Period Debit cib:FraudAndClaimsExpense
3106 Data processing Concept (Monetary) For Period Debit cib:DataProcessingExpense
3107 Advertising Concept (Monetary) For Period Debit ifrs-full:SalesAndMarketingExpense
3108 Public services Concept (Monetary) For Period Debit cib:PublicServicesExpense
3109 Cleaning and security services Concept (Monetary) For Period Debit cib:CleaningAndSecurityServicesExpense
3110 communications Concept (Monetary) For Period Debit ifrs-full:CommunicationExpense
3111 Contributions and affiliations Concept (Monetary) For Period Debit cib:ContributionsAndAffiliationsExpense
3112 Properties improvements and installation Concept (Monetary) For Period Debit cib:PropertiesImprovementsAndInstallationExpense
3113 Useful and stationery Concept (Monetary) For Period Debit cib:UsefulAndStationeryExpense
3114 Travel expenses Concept (Monetary) For Period Debit ifrs-full:TravelExpense
3115 Production and supply cards Concept (Monetary) For Period Debit cib:ProductionAndSupplyCardsExpense
3116 Trust Concept (Monetary) For Period Debit cib:TrustExpense
3117 Legal and financial consultants Concept (Monetary) For Period Debit ifrs-full:ProfessionalFeesExpense
3118 Real estate management Concept (Monetary) For Period Debit cib:RealEstateManagementExpense
3119 Board of directors and audit fee Concept (Monetary) For Period Debit cib:BoardOfDirectorsAndAuditFeeExpense
3120 Donations Concept (Monetary) For Period Debit ifrs-full:DonationsAndSubsidiesExpense
3121 Storage services Concept (Monetary) For Period Debit cib:StorageServicesExpense
3122 Activities Joint Operations Concept (Monetary) For Period Debit cib:ActivitiesJointOperationsExpense
3123 Public relations Concept (Monetary) For Period Debit cib:PublicRelationsExpense
3124 Legal expenses Concept (Monetary) For Period Debit cib:LegalExpenses
3125 Temporary services Concept (Monetary) For Period Debit cib:TemporaryServicesExpense
3126 Others Concept (Monetary) For Period Debit ifrs-full:MiscellaneousOtherOperatingExpense
3127 Total other administrative and general expenses Concept (Monetary) For Period Debit ifrs-full:SellingGeneralAndAdministrativeExpense
3128 Wealth tax, contributions and other tax burden Concept (Monetary) For Period Debit ifrs-full:TaxExpenseOtherThanIncomeTaxExpense
3129 1218 - Disclosure - OPERATING EXPENSES (Details 1) Network

*

*

http://www.grupobancolombia.com/role/OperatingExpensesDetails1
3130 Implied Table Table

*

*

implied:Table
3131 Disclosure of operating expenses [Abstract] Abstract cib:DisclosureOfOperatingExpensesAbstract
3132 Impairment of the other assets Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss
3133 Depreciation of premises and equipment Concept (Monetary) For Period Debit ifrs-full:DepreciationExpense
3134 Amortization of intangible assets Concept (Monetary) For Period Debit ifrs-full:AmortisationExpense
3135 Total impairment, depreciation and amortization Concept (Monetary) For Period Debit ifrs-full:DepreciationAmortisationAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss
3136 1219 - Disclosure - OPERATING EXPENSES (Details 2) Network

*

*

http://www.grupobancolombia.com/role/OperatingExpensesDetails2
3137 Disclosure of operating expenses [Table] Table

*

*

cib:DisclosureOfOperatingExpensesTable
3138 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
3139 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
3140 Banking El Salvador [Member] Member cib:BankingElSalvadorMember
3141 Banking Colombia [Member] Member cib:BankingColombiaMember
3142 Banking Guatemala [Member] Member cib:BankingGuatemalaMember
3143 Banking Panama [Member] Member cib:BankingPanamaMember
3144 Off shore [Member] Member cib:OffShoreMember
3145 All Other Segments [Member] Member ifrs-full:AllOtherSegmentsMember
3146 Brokerage [Member] Member cib:BrokerageMember
3147 Disclosure of operating expenses [Line Items] LineItems cib:DisclosureOfOperatingExpensesLineItems
3148 Impairment loss (reversal of impairment loss) recognised in profit or loss Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss
3149 1220 - Disclosure - OPERATING EXPENSES (Details Textual) Network

*

*

http://www.grupobancolombia.com/role/OperatingExpensesDetailsTextual
3150 Disclosure of operating expenses [Table] Table

*

*

cib:DisclosureOfOperatingExpensesTable
3151 Fiscal year [Axis] Axis cib:FiscalYearAxis
3152 Fiscal year [Domain] Member cib:FiscalYearDomain
3153 Disclosure of operating expenses [Line Items] LineItems cib:DisclosureOfOperatingExpensesLineItems
3154 Unrecognized Tax Benefits Concept (Monetary) As Of Credit us-gaap:UnrecognizedTaxBenefits
3155 1221 - Disclosure - EARNING PER SHARE ('EPS') (Details) Network

*

*

http://www.grupobancolombia.com/role/EarningPerShareEpsDetails
3156 Implied Table Table

*

*

implied:Table
3157 Disclosure of earnings per share [Abstract] Abstract cib:DisclosureOfEarningsPerShareAbstract
3158 Income from continuing operations before attribution of non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperations
3159 Less: Non-controlling interests from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperationsAttributableToNoncontrollingInterests
3160 Net income from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperationsAttributableToOrdinaryEquityHoldersOfParentEntity
3161 Income from operations and disposals of discontinued operations, net of taxes Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromDiscontinuedOperations
3162 Less: Non-controlling interests from discontinuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromDiscontinuedOperationsAttributableToNoncontrollingInterests
3163 Net income attributable to the controlling interest Concept (Monetary) For Period Credit ifrs-full:IncomeFromDiscontinuedOperationsAttributableToOwnersOfParent
3164 Less: Preferred dividends declared Concept (Monetary) For Period Debit ifrs-full:DividendsClassifiedAsExpense
3165 Less: Allocation of undistributed earnings to preferred stockholders Concept (Monetary) For Period Debit cib:UndistributedEarningsPreferredStock
3166 Continuing operations Concept (Monetary) For Period Debit cib:UndistributedEarningsPreferredStockContinuingOperation
3167 Discontinued operations Concept (Monetary) For Period Debit cib:UndistributedEarningsPreferredStockDiscontinuingOperation
3168 Net income allocated to common shareholders for basic and diluted EPS Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOrdinaryEquityHoldersOfParentEntityIncludingDilutiveEffects
3169 Weighted average number of common shares outstanding used in basic EPS calculation (in millions) Concept (Shares) For Period ifrs-full:WeightedAverageShares
3170 Basic and Diluted earnings per share to common shareholders Concept (Share) For Period ifrs-full:BasicAndDilutedEarningsLossPerShare
3171 From continuing operations Concept (Share) For Period ifrs-full:BasicAndDilutedEarningsLossPerShareFromContinuingOperations
3172 From discontinuing operations Concept (Share) For Period ifrs-full:BasicAndDilutedEarningsLossPerShareFromDiscontinuedOperations
3173 1222 - Disclosure - RELATED PARTY TRANSACTIONS (Details) Network

*

*

http://www.grupobancolombia.com/role/RelatedPartyTransactionsDetails
3174 Disclosure of related party transactions [Table] Table

*

*

cib:DisclosureOfRelatedPartyTransactionsTable
3175 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
3176 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
3177 Stockholders with an interest equal or higher than 20% of the Bank's capital [Member] Member cib:StockholdersWithInterestEqualOrHigherThan10OfBanksCapitalMember
3178 Directors and senior management [Member] Member cib:DirectorsAndSeniorManagementMember
3179 Associates and joint ventures [Member] Member cib:AssociatesAndJointVenturesMember
3180 Disclosure of related party transactions [Line Items] LineItems cib:DisclosureOfRelatedPartyTransactionsLineItems
3181 Assets Abstract ifrs-full:AssetsAbstract
3182 Investments Concept (Monetary) As Of Debit ifrs-full:InvestmentsInSubsidiariesJointVenturesAndAssociates
3183 Loans and advances to customers and financial entities, net Concept (Monetary) For Period Credit ifrs-full:CashAdvancesAndLoansMadeToRelatedParties
3184 Assets held for sale and inventories Concept (Monetary) As Of Debit cib:AssetsHeldForSaleAndInventories
3185 Other Assets Concept (Monetary) As Of Debit ifrs-full:OtherAssets
3186 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
3187 Liabilities Abstract ifrs-full:LiabilitiesAbstract
3188 Deposits Concept (Monetary) As Of Credit ifrs-full:DepositsFromCustomers
3189 Other Liabilities Concept (Monetary) As Of Credit ifrs-full:OtherLiabilities
3190 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
3191 Income Abstract cib:IncomeAbstract
3192 Interest and other operating income Concept (Monetary) For Period Credit ifrs-full:RevenueFromInterest
3193 Dividends Concept (Monetary) For Period Credit ifrs-full:RevenueFromDividends
3194 Others Concept (Monetary) For Period Credit ifrs-full:OtherIncome
3195 Net income Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
3196 Expenses Abstract cib:ExpensesAbstract
3197 Interests and other operating expenses Concept (Monetary) For Period Debit ifrs-full:InterestExpense
3198 Fees Concept (Monetary) For Period Debit ifrs-full:FeeAndCommissionExpense
3199 Others Concept (Monetary) For Period Debit ifrs-full:OtherExpenseByNature
3200 Total expenses Concept (Monetary) For Period Debit ifrs-full:ExpenseByNature
3201 1223 - Disclosure - RELATED PARTY TRANSACTIONS (Details 1) Network

*

*

http://www.grupobancolombia.com/role/RelatedPartyTransactionsDetails1
3202 Disclosure of related party transactions [Table] Table

*

*

cib:DisclosureOfRelatedPartyTransactionsTable
3203 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
3204 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
3205 Financial Conglomerate Operations [Member] Member cib:FinancialConglomerateOperationsMember
3206 Disclosure of related party transactions [Line Items] LineItems cib:DisclosureOfRelatedPartyTransactionsLineItems
3207 Assets Abstract ifrs-full:AssetsAbstract
3208 Investments Concept (Monetary) As Of Debit ifrs-full:InvestmentsInSubsidiariesJointVenturesAndAssociates
3209 Loans and advances to customers and financial entities, net Concept (Monetary) For Period Credit ifrs-full:CashAdvancesAndLoansMadeToRelatedParties
3210 Other assets Concept (Monetary) As Of Debit ifrs-full:OtherAssets
3211 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
3212 Liabilities Abstract ifrs-full:LiabilitiesAbstract
3213 Deposits Concept (Monetary) As Of Credit ifrs-full:DepositsFromCustomers
3214 Other Liabilities Concept (Monetary) As Of Credit ifrs-full:OtherLiabilities
3215 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
3216 Income Abstract ifrs-full:RevenueAbstract
3217 Interest and other operating income Concept (Monetary) For Period Credit ifrs-full:RevenueFromInterest
3218 Dividends Concept (Monetary) For Period Credit ifrs-full:RevenueFromDividends
3219 Net income Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
3220 Expenses Abstract ifrs-full:ExpenseByNatureAbstract
3221 Interests and other operating expenses Concept (Monetary) For Period Debit ifrs-full:InterestExpense
3222 Fees Concept (Monetary) For Period Debit ifrs-full:FeeAndCommissionExpense
3223 Others Concept (Monetary) For Period Debit ifrs-full:OtherExpenseByNature
3224 Total expenses Concept (Monetary) For Period Debit ifrs-full:ExpenseByNature
3225 1224 - Disclosure - RELATED PARTY TRANSACTIONS (Details Textual) Network

*

*

http://www.grupobancolombia.com/role/RelatedPartyTransactionsDetailsTextual
3226 Disclosure of related party transactions [Table] Table

*

*

cib:DisclosureOfRelatedPartyTransactionsTable
3227 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
3228 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
3229 Stockholders [Member] Member cib:StockholdersMember
3230 Board of Directors and Senior Management [Member] Member cib:BoardOfDirectorsAndSeniorManagementMember
3231 Assorciates and joint ventures [Member] Member cib:AssorciatesAndJointVenturesMember
3232 Board of Directors [Member] Member cib:BoardOfDirectorsMember
3233 Senior Managment [Member] Member cib:SeniorManagmentMember
3234 Other related parties [member] Member ifrs-full:OtherRelatedPartiesMember
3235 Parent [Member] Member ifrs-full:ParentMember
3236 Range [Axis] Axis ifrs-full:RangeAxis
3237 Ranges [member] Member ifrs-full:RangesMember
3238 Top of range [member] Member ifrs-full:TopOfRangeMember
3239 Disclosure of related party transactions [Line Items] LineItems cib:DisclosureOfRelatedPartyTransactionsLineItems
3240 Description of ownership interest percentage Concept (Percent) As Of cib:DescriptionOfOwnershipInterestPercentage
3241 Key management personnel compensation Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensation
3242 Key management personnel compensation, short-term employee benefits Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationShorttermEmployeeBenefits
3243 Key management personnel compensation, other long-term employee benefits Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationOtherLongtermBenefits
3244 Key management personnel compensation, post-employment benefits Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationPostemploymentBenefits
3245 Portfolio loans and financial leasing contracts Concept (Monetary) As Of Debit cib:PortfolioLoansAndFinancialLeasingContracts
3246 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
3247 Other Assets Concept (Monetary) As Of Debit ifrs-full:OtherAssets
3248 Deposits from customers Concept (Monetary) As Of Credit ifrs-full:DepositsFromCustomers
3249 Debt instruments issued Concept (Monetary) As Of Credit ifrs-full:DebtSecurities
3250 Other Liabilities Concept (Monetary) As Of Credit ifrs-full:OtherLiabilities
3251 1225 - Disclosure - LIABILITIES FROM FINANCING ACTIVITIES (Details) Network

*

*

http://www.grupobancolombia.com/role/LiabilitiesFromFinancingActivitiesDetails
3252 Disclosure of liabilities from financing activities [Table] Table

*

*

cib:DisclosureOfLiabilitiesFromFinancingActivitiesTable
3253 Liabilities arising from financing activities [axis] Axis ifrs-full:LiabilitiesArisingFromFinancingActivitiesAxis
3254 Liabilities arising from financing activities [member] Member ifrs-full:LiabilitiesArisingFromFinancingActivitiesMember
3255 Repurchase agreements and other similar secured borrowing [Member] Member cib:RepurchaseAgreementsAndOtherSimilarSecuredBorrowingMember
3256 Borrowings from other financial institutions [member] Member ifrs-full:LongtermBorrowingsMember
3257 Debt securities in issue [Member] Member cib:DebtSecuritiesInIssueMember
3258 Preferred shares [Member] Member cib:PreferredSharesMember
3259 Disclosure of liabilities from financing activities [Line Items] LineItems cib:DisclosureOfLiabilitiesFromFinancingActivitiesLineItems
3260 Balance as of January 1, 2018 Concept (Monetary) As Of Credit ifrs-full:LiabilitiesArisingFromFinancingActivities
3261 Cash flows Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughFinancingCashFlowsLiabilitiesArisingFromFinancingActivities
3262 Foreign currency translation adjustment Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughEffectOfChangesInForeignExchangeRatesLiabilitiesArisingFromFinancingActivities
3263 Interests accrued Concept (Monetary) For Period Credit cib:IncreaseDecreaseThroughInterestAccruedLiabilitiesArisingFromFinancingActivities
3264 Other movements Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughOtherChangesLiabilitiesArisingFromFinancingActivities
3265 Balance as of December 31, 2018 Concept (Monetary) As Of Credit ifrs-full:LiabilitiesArisingFromFinancingActivities
3266 1226 - Disclosure - LIABILITIES FROM FINANCING ACTIVITIES (Details Textual) Network

*

*

http://www.grupobancolombia.com/role/LiabilitiesFromFinancingActivitiesDetailsTextual
3267 Disclosure of liabilities from financing activities [Table] Table

*

*

cib:DisclosureOfLiabilitiesFromFinancingActivitiesTable
3268 Liabilities arising from financing activities [axis] Axis ifrs-full:LiabilitiesArisingFromFinancingActivitiesAxis
3269 Liabilities arising from financing activities [member] Member ifrs-full:LiabilitiesArisingFromFinancingActivitiesMember
3270 Borrowings from other financial institutions [member] Member ifrs-full:LongtermBorrowingsMember
3271 Debt securities in issue [Member] Member cib:DebtSecuritiesInIssueMember
3272 Range [Axis] Axis ifrs-full:RangeAxis
3273 Ranges [member] Member ifrs-full:RangesMember
3274 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
3275 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
3276 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
3277 Disclosure of liabilities from financing activities [Line Items] LineItems cib:DisclosureOfLiabilitiesFromFinancingActivitiesLineItems
3278 Interest paid, classified as operating activities Concept (Monetary) For Period Credit ifrs-full:InterestPaidClassifiedAsOperatingActivities
3279 Reclassification of liabilities related to assets held for sale Concept (Monetary) For Period Debit cib:ReclassificationOfLiabilitiesRelatedToAssetsHeldForSale
3280 Dividends paid, classified as financing activities Concept (Monetary) For Period Credit ifrs-full:DividendsPaidClassifiedAsFinancingActivities
3281 1227 - Disclosure - FAIR VALUE OF ASSETS AND LIABILITIES (Details) Network

*

*

http://www.grupobancolombia.com/role/FairValueOfAssetsAndLiabilitiesDetails
3282 Disclosure of fair value of assets and liabilities [Table] Table

*

*

cib:DisclosureOfFairValueOfAssetsAndLiabilitiesTable
3283 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
3284 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
3285 Carrying amount Member cib:FinancialAssetsAtAmortisedCostsMember
3286 Fair Value Member cib:FinancialAssetsAtFairValuesMember
3287 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
3288 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
3289 Financial assets at fair value through profit or loss, category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
3290 Financial assets at fair value through other comprehensive income, category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember
3291 Disclosure of fair value of assets and liabilities [Line Items] LineItems cib:DisclosureOfFairValueOfAssetsAndLiabilitiesLineItems
3292 Assets Abstract ifrs-full:AssetsAbstract
3293 Debt securities at fair value Concept (Monetary) As Of Debit cib:SecurityInvestments
3294 Debt securities at amortized cost Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtAmortisedCost
3295 Equity securities at fair value Concept (Monetary) As Of Debit ifrs-full:EquityInstrumentsHeld
3296 Derivative financial instruments Concept (Monetary) As Of Debit ifrs-full:DerivativeFinancialAssets
3297 Loans and advances to customers and financial institutions, net Concept (Monetary) As Of Debit ifrs-full:LoansAndAdvancesToCustomers
3298 Investment property Concept (Monetary) As Of Debit ifrs-full:InvestmentProperty
3299 Invesments in associates and joint ventures Concept (Monetary) As Of Debit cib:InvestmentsInAssociatesAndJointVentures
3300 Equity securities - Assets held for sale Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading
3301 Total Concept (Monetary) As Of Debit ifrs-full:Assets
3302 Liabilities Abstract ifrs-full:LiabilitiesAbstract
3303 Deposits by customers Concept (Monetary) As Of Credit ifrs-full:DepositsFromCustomers
3304 Interbank deposits Concept (Monetary) As Of Credit ifrs-full:DepositsFromBanks
3305 Repurchase agreements and other similar secured borrowing Concept (Monetary) As Of Credit ifrs-full:RepurchaseAgreementsAndCashCollateralOnSecuritiesLent
3306 Derivative financial instruments Concept (Monetary) As Of Credit ifrs-full:DerivativeFinancialLiabilities
3307 Borrowings from other financial institutions Concept (Monetary) As Of Credit ifrs-full:Borrowings
3308 Preferred shares Concept (Monetary) As Of Credit cib:PreferredShares
3309 Debt securities in issue Concept (Monetary) As Of Credit ifrs-full:DebtSecurities
3310 Total Concept (Monetary) As Of Credit ifrs-full:Liabilities
3311 1228 - Disclosure - FAIR VALUE OF ASSETS AND LIABILITIES (Details 1) Network

*

*

http://www.grupobancolombia.com/role/FairValueOfAssetsAndLiabilitiesDetails1
3312 Disclosure of fair value of assets and liabilities [Table] Table

*

*

cib:DisclosureOfFairValueOfAssetsAndLiabilitiesTable
3313 Levels of fair value hierarchy [axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
3314 All levels of fair value hierarchy [member] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
3315 Level 1 of fair value hierarchy [member] Member ifrs-full:Level1OfFairValueHierarchyMember
3316 Level 2 of fair value hierarchy [member] Member ifrs-full:Level2OfFairValueHierarchyMember
3317 Level 3 of fair value hierarchy [member] Member ifrs-full:Level3OfFairValueHierarchyMember
3318 Measurement [axis] Axis ifrs-full:MeasurementAxis
3319 Aggregated measurement [member] Member ifrs-full:AggregatedMeasurementMember
3320 Recurring fair value measurement [member] Member ifrs-full:RecurringFairValueMeasurementMember
3321 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
3322 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
3323 Securities issued by the Colombian Government [Member] Member cib:SecuritiesIssuedByColombianGovernmentMember
3324 Securities issued by government entities [Member] Member cib:SecuritiesIssuedByGovernmentEntitiesMember
3325 Securities issued by other financial institutions [Member] Member cib:SecuritiesIssuedByOtherFinancialInstitutionsMember
3326 Securities issued by foreign governments [Member] Member cib:SecuritiesIssuedByForeignGovernmentsMember
3327 Corporate bonds [Member] Member cib:CorporateBondsMember
3328 Forward contract [member] Member ifrs-full:ForwardContractMember
3329 Option contract [member] Member ifrs-full:OptionContractMember
3330 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
3331 Assets [member] Member ifrs-full:ClassesOfAssetsMember
3332 Trading equity securities [member] Member ifrs-full:TradingEquitySecuritiesMember
3333 Equity securities held for sale [Member] Member cib:EquitySecuritiesHeldForSaleMember
3334 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
3335 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
3336 Interest rate contracts [Member] Member cib:InterestRateContractsMember
3337 Foreign exchange contracts [Member] Member cib:DerivativeFinancialInstrumentsForeignExchangeContractsMember
3338 Equity contracts [Member] Member cib:DerivativeFinancialInstrumentsEquityContractsMember
3339 Debt instruments at fair value through OCI Member cib:SecurityInvestmentsMember
3340 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
3341 Property, Plant and Equipment [Member] Member ifrs-full:PropertyPlantAndEquipmentMember
3342 Buildings [member] Member ifrs-full:BuildingsMember
3343 Land [Member] Member ifrs-full:LandMember
3344 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
3345 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
3346 PA Viva Malls [Member] Member cib:PaVivaMallsMember
3347 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
3348 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
3349 Associates [member] Member ifrs-full:AssociatesMember
3350 Disclosure of fair value of assets and liabilities [Line Items] LineItems cib:DisclosureOfFairValueOfAssetsAndLiabilitiesLineItems
3351 Total Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValue
3352 Debt instruments held Concept (Monetary) As Of Debit ifrs-full:DebtInstrumentsHeld
3353 Debt instruments at fair value through OCI Concept (Monetary) As Of Debit ifrs-full:FairValueOfInvestmentsInEquityInstrumentsDesignatedAsMeasuredAtFairValueThroughOtherComprehensiveIncome
3354 Equity instruments held Concept (Monetary) As Of Debit ifrs-full:EquityInstrumentsHeld
3355 Derivative financial assets Concept (Monetary) As Of Debit ifrs-full:DerivativeFinancialAssets
3356 Investment property Concept (Monetary) As Of Debit ifrs-full:InvestmentProperty
3357 Investments in associates Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociates
3358 Equity securities - Assets held for sale Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading
3359 1229 - Disclosure - FAIR VALUE OF ASSETS AND LIABILITIES (Details 2) Network

*

*

http://www.grupobancolombia.com/role/FairValueOfAssetsAndLiabilitiesDetails2
3360 Disclosure of fair value of assets and liabilities [Table] Table

*

*

cib:DisclosureOfFairValueOfAssetsAndLiabilitiesTable
3361 Measurement [axis] Axis ifrs-full:MeasurementAxis
3362 Aggregated measurement [member] Member ifrs-full:AggregatedMeasurementMember
3363 Recurring fair value measurement [member] Member ifrs-full:RecurringFairValueMeasurementMember
3364 Levels of fair value hierarchy [axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
3365 All levels of fair value hierarchy [member] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
3366 Level 1 of fair value hierarchy [member] Member ifrs-full:Level1OfFairValueHierarchyMember
3367 Level 2 of fair value hierarchy [member] Member ifrs-full:Level2OfFairValueHierarchyMember
3368 Level 3 of fair value hierarchy [member] Member ifrs-full:Level3OfFairValueHierarchyMember
3369 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
3370 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
3371 Foreign exchange contracts [Member] Member cib:ForeignExchangeContractsMember
3372 Equity contracts [Member] Member cib:EquityContractsMember
3373 Interest rate contracts [Member] Member cib:InterestRateContractsMember
3374 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
3375 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
3376 Forward contract [member] Member ifrs-full:ForwardContractMember
3377 Swap contract [member] Member ifrs-full:SwapContractMember
3378 Option contract [member] Member ifrs-full:OptionContractMember
3379 Disclosure of fair value of assets and liabilities [Line Items] LineItems cib:DisclosureOfFairValueOfAssetsAndLiabilitiesLineItems
3380 Derivative financial liabilities Concept (Monetary) As Of Credit ifrs-full:DerivativeFinancialLiabilities
3381 Financial liabilities, at fair value Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilitiesAtFairValue
3382 1230 - Disclosure - FAIR VALUE OF ASSETS AND LIABILITIES (Details 3) Network

*

*

http://www.grupobancolombia.com/role/FairValueOfAssetsAndLiabilitiesDetails3
3383 Disclosure of fair value of assets and liabilities [Table] Table

*

*

cib:DisclosureOfFairValueOfAssetsAndLiabilitiesTable
3384 Levels of fair value hierarchy [axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
3385 All levels of fair value hierarchy [member] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
3386 Level 1 of fair value hierarchy [member] Member ifrs-full:Level1OfFairValueHierarchyMember
3387 Level 2 of fair value hierarchy [member] Member ifrs-full:Level2OfFairValueHierarchyMember
3388 Level 3 of fair value hierarchy [member] Member ifrs-full:Level3OfFairValueHierarchyMember
3389 Measurement [axis] Axis ifrs-full:MeasurementAxis
3390 Aggregated measurement [member] Member ifrs-full:AggregatedMeasurementMember
3391 Not measured at fair value in statement of financial position but for which fair value is disclosed [member] Member ifrs-full:NotMeasuredAtFairValueInStatementOfFinancialPositionButForWhichFairValueIsDisclosedMember
3392 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
3393 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
3394 Securities issued by the Colombian Government [Member] Member cib:SecuritiesIssuedByColombianGovernmentMember
3395 Securities issued by government entities [Member] Member cib:SecuritiesIssuedByGovernmentEntitiesMember
3396 Securities issued by other financial institutions [Member] Member cib:SecuritiesIssuedByOtherFinancialInstitutionsMember
3397 Securities issued by foreign governments [Member] Member cib:SecuritiesIssuedByForeignGovernmentsMember
3398 Corporate bonds [Member] Member cib:CorporateBondsMember
3399 Disclosure of fair value of assets and liabilities [Line Items] LineItems cib:DisclosureOfFairValueOfAssetsAndLiabilitiesLineItems
3400 Financial assets at amortised cost Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtAmortisedCost
3401 Loans and advances to customers and financial institutions, net Concept (Monetary) As Of Debit ifrs-full:LoansAndAdvancesToCustomers
3402 Total Concept (Monetary) As Of Debit ifrs-full:Assets
3403 Deposits by customers Concept (Monetary) As Of Credit ifrs-full:DepositsFromCustomers
3404 Interbank deposits Concept (Monetary) As Of Credit ifrs-full:DepositsFromBanks
3405 Repurchase agreements and other similar secured borrowing Concept (Monetary) As Of Credit ifrs-full:RepurchaseAgreementsAndCashCollateralOnSecuritiesLent
3406 Borrowings from other financial institutions Concept (Monetary) As Of Credit ifrs-full:Borrowings
3407 Preferred shares Concept (Monetary) As Of Credit cib:PreferredShares
3408 Debt securities in issue Concept (Monetary) As Of Credit ifrs-full:DebtSecurities
3409 Total Concept (Monetary) As Of Credit cib:LiabilitiesNotMeasuredAtFairValue
3410 1231 - Disclosure - FAIR VALUE OF ASSETS AND LIABILITIES (Details 4) Network

*

*

http://www.grupobancolombia.com/role/FairValueOfAssetsAndLiabilitiesDetails4
3411 Disclosure of fair value of assets and liabilities [Table] Table

*

*

cib:DisclosureOfFairValueOfAssetsAndLiabilitiesTable
3412 Levels of fair value hierarchy [axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
3413 All levels of fair value hierarchy [member] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
3414 Level 1 of fair value hierarchy [member] Member ifrs-full:Level1OfFairValueHierarchyMember
3415 Level 2 of fair value hierarchy [member] Member ifrs-full:Level2OfFairValueHierarchyMember
3416 Level 3 of fair value hierarchy [member] Member ifrs-full:Level3OfFairValueHierarchyMember
3417 Measurement [axis] Axis ifrs-full:MeasurementAxis
3418 Aggregated measurement [member] Member ifrs-full:AggregatedMeasurementMember
3419 Non-recurring fair value measurement [member] Member ifrs-full:NonrecurringFairValueMeasurementMember
3420 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
3421 Assets [member] Member ifrs-full:ClassesOfAssetsMember
3422 Non-current assets held for sale [member] Member ifrs-full:NoncurrentAssetsHeldForSaleMember
3423 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
3424 Property, Plant and Equipment [Member] Member ifrs-full:PropertyPlantAndEquipmentMember
3425 Machinery [member] Member ifrs-full:MachineryMember
3426 Real Estate For Residential Purposes [Member] Member cib:RealEstateForResidentialPurposesMember
3427 Real Estate For Other Than Residential Purposes [Member] Member cib:RealEstateForOtherThanResidentialPurposesMember
3428 Collateralized Loans [Member] Member cib:CollateralizedLoansMember
3429 Disclosure of fair value of assets and liabilities [Line Items] LineItems cib:DisclosureOfFairValueOfAssetsAndLiabilitiesLineItems
3430 Financial assets, at fair value Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValue
3431 1232 - Disclosure - FAIR VALUE OF ASSETS AND LIABILITIES (Details 5) Network

*

*

http://www.grupobancolombia.com/role/FairValueOfAssetsAndLiabilitiesDetails5
3432 Disclosure of fair value of assets and liabilities [Table] Table

*

*

cib:DisclosureOfFairValueOfAssetsAndLiabilitiesTable
3433 Levels of fair value hierarchy [axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
3434 All levels of fair value hierarchy [member] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
3435 Level 1 of fair value hierarchy [member] Member ifrs-full:Level1OfFairValueHierarchyMember
3436 Level 2 of fair value hierarchy [member] Member ifrs-full:Level2OfFairValueHierarchyMember
3437 Level 3 of fair value hierarchy [member] Member ifrs-full:Level3OfFairValueHierarchyMember
3438 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
3439 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
3440 Compania de Financiemiento TUYA S.A. [Member] Member cib:CompaniaDeFinanciemientoTuyaSaMember
3441 Disclosure of fair value of assets and liabilities [Line Items] LineItems cib:DisclosureOfFairValueOfAssetsAndLiabilitiesLineItems
3442 Fair value of investments in associates for which there are quoted market prices Concept (Monetary) As Of Debit ifrs-full:FairValueOfInvestmentsInAssociatesWherePriceQuotationsPublished
3443 Investments in associates Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociates
3444 1233 - Disclosure - FAIR VALUE OF ASSETS AND LIABILITIES (Details 6) Network

*

*

http://www.grupobancolombia.com/role/FairValueOfAssetsAndLiabilitiesDetails6
3445 Disclosure of fair value of assets and liabilities [Table] Table

*

*

cib:DisclosureOfFairValueOfAssetsAndLiabilitiesTable
3446 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
3447 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
3448 Securities issued or secured by other financial entities [member] Member cib:SecuritiesIssuedByOtherFinancialInstitutionsMember
3449 Derivative financial instruments [member] Member ifrs-full:DerivativesMember
3450 Corporate bonds [Member] Member cib:CorporateBondsMember
3451 Securities issued by the Colombian Government [Member] Member cib:SecuritiesIssuedByColombianGovernmentMember
3452 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
3453 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
3454 Foreign exchange contracts [Member] Member cib:ForeignExchangeContractsMember
3455 Interest rate contracts [Member] Member cib:InterestRateContractsMember
3456 Equity contracts [Member] Member cib:EquityContractsMember
3457 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
3458 Assets [member] Member ifrs-full:ClassesOfAssetsMember
3459 Equity securities [member] Member ifrs-full:TradingEquitySecuritiesMember
3460 Debt Securities [Member] Member ifrs-full:DebtSecuritiesMember
3461 Equity securities held for sale [Member] Member cib:EquitySecuritiesHeldForSaleMember
3462 Total equity securities [Member] Member cib:TotalEquitySecuritiesMember
3463 Total equity securities assets held for sale [Member] Member cib:TotalEquitySecuritiesAssetsHeldForSaleMember
3464 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
3465 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
3466 PA Viva Malls [Member] Member cib:PaVivaMallsMember
3467 Total Investment In Associates [Member] Member cib:TotalInvestmentInAssociatesMember
3468 Levels of fair value hierarchy [axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
3469 All levels of fair value hierarchy [member] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
3470 Disclosure of fair value of assets and liabilities [Line Items] LineItems cib:DisclosureOfFairValueOfAssetsAndLiabilitiesLineItems
3471 Balance as on January 1, Concept (Monetary) As Of Debit cib:FairValueNetDerivativeAssetAndLiabilityMeasuredOnRecurringBasisWithUnobservableInputsChanges
3472 Included in earnings Concept (Monetary) For Period ifrs-full:GainsLossesRecognisedInProfitOrLossFairValueMeasurementAssets
3473 OCI Concept (Monetary) For Period ifrs-full:GainsLossesRecognisedInOtherComprehensiveIncomeFairValueMeasurementAssets
3474 Purchases / reclassifications Concept (Monetary) For Period Debit ifrs-full:PurchasesFairValueMeasurementAssets
3475 Settlement Concept (Monetary) For Period Credit ifrs-full:SettlementsFairValueMeasurementAssets
3476 Prepaids Concept (Monetary) For Period Debit cib:PrepaidFairValueMeasurementAssets
3477 Transfers in to Level 3 Concept (Monetary) For Period Debit ifrs-full:TransfersIntoLevel3OfFairValueHierarchyAssets
3478 Transfers out of Level 3 Concept (Monetary) For Period Credit ifrs-full:TransfersOutOfLevel3OfFairValueHierarchyAssets
3479 Balance as on December 31, Concept (Monetary) As Of Debit cib:FairValueNetDerivativeAssetAndLiabilityMeasuredOnRecurringBasisWithUnobservableInputsChanges
3480 1234 - Disclosure - FAIR VALUE OF ASSETS AND LIABILITIES (Details 7) Network

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*

http://www.grupobancolombia.com/role/FairValueOfAssetsAndLiabilitiesDetails7
3481 Disclosure of fair value of assets and liabilities [Table] Table

*

*

cib:DisclosureOfFairValueOfAssetsAndLiabilitiesTable
3482 Range [Axis] Axis ifrs-full:RangeAxis
3483 Ranges [member] Member ifrs-full:RangesMember
3484 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
3485 Top of range [member] Member ifrs-full:TopOfRangeMember
3486 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
3487 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
3488 Corporate bonds [Member] Member cib:CorporateBondsMember
3489 Option contract [member] Member ifrs-full:OptionContractMember
3490 Forward contract [member] Member ifrs-full:ForwardContractMember
3491 Swap contract [member] Member ifrs-full:SwapContractMember
3492 TIPS, securities issued by other institutions one [Member] Member cib:TipsSecuritiesIssuedByOtherInstitutionsOneMember
3493 TIPS, securities issued by other institutions two [Member] Member cib:TipsSecuritiesIssuedByOtherInstitutionsTwoMember
3494 TIPS, securities issued by other institutions TIPS three [Member] Member cib:TipsSecuritiesIssuedByOtherInstitutionsTipsThreeMember
3495 Other bonds, securities issued by other institutions [Member] Member cib:OtherBondsSecuritiesIssuedByOtherInstitutionsMember
3496 Securitisations, securities issued by other institutions [Member] Member cib:SecuritisationsSecuritiesIssuedByOtherInstitutionsMember
3497 Time deposit, securities issued by other institutions [Member] Member cib:TimeDepositSecuritiesIssuedByOtherInstitutionsMember
3498 Multilateral bonds [Member] Member cib:MultilateralBondsMember
3499 Governments bonds [Member] Member cib:GovernmentsBondsMember
3500 Total securities issued by foreign governments [Member] Member cib:TotalSecuritiesIssuedByForeignGovernmentsMember
3501 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
3502 Assets [member] Member ifrs-full:ClassesOfAssetsMember
3503 Debt Securities [Member] Member ifrs-full:DebtSecuritiesMember
3504 Trading equity securities [member] Member ifrs-full:TradingEquitySecuritiesMember
3505 Equity securities held for sale [Member] Member cib:EquitySecuritiesHeldForSaleMember
3506 Securities issued by other financial institutions [Member] Member cib:SecuritiesIssuedByOtherFinancialInstitutionsMember
3507 Valuation techniques used in fair value measurement [axis] Axis ifrs-full:ValuationTechniquesUsedInFairValueMeasurementAxis
3508 Valuation techniques [member] Member ifrs-full:ValuationTechniquesMember
3509 Discounted cash flow [member] Member ifrs-full:DiscountedCashFlowMember
3510 Market comparable prices [member] Member ifrs-full:MarketComparablePricesMember
3511 Black-Scholes [Member] Member cib:BlackscholesMember
3512 Unobservable Input [Axis] Axis cib:UnobservableInputAxis
3513 Unobservable Input [Domain] Member cib:UnobservableInputDomain
3514 Yield [Member] Member cib:YieldMember
3515 Liquidity risk premium [Member] Member cib:LiquidityRiskPremiumMember
3516 Prepayment speed [Member] Member cib:PrepaymentSpeedMember
3517 Price [Member] Member cib:PriceMember
3518 Recovery rate [Member] Member cib:RecoveryRateMember
3519 Credit spread [Member] Member cib:CreditSpreadMember
3520 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
3521 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
3522 PA Viva Malls [Member] Member cib:PaVivaMallsMember
3523 Disclosure of fair value of assets and liabilities [Line Items] LineItems cib:DisclosureOfFairValueOfAssetsAndLiabilitiesLineItems
3524 Fair Value Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValue
3525 Interest rate, significant unobservable inputs, assets Concept (Percent) For Period ifrs-full:InterestRateSignificantUnobservableInputsAssets
3526 Effect on fairvalue of assets due to increase in basis point Concept (Monetary) For Period Debit cib:EffectOnFairvalueOfAssetsDueToIncreaseInBasisPoint
3527 Effect on fair value of assets due to decrease in basis point Concept (Monetary) For Period Credit cib:EffectOnFairValueOfAssetsDueToDecreaseInBasisPoint
3528 1235 - Disclosure - FAIR VALUE OF ASSETS AND LIABILITIES (Details Textual) Network

*

*

http://www.grupobancolombia.com/role/FairValueOfAssetsAndLiabilitiesDetailsTextual
3529 Disclosure of fair value of assets and liabilities [Table] Table

*

*

cib:DisclosureOfFairValueOfAssetsAndLiabilitiesTable
3530 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
3531 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
3532 Associates [member] Member ifrs-full:AssociatesMember
3533 Measurement [axis] Axis ifrs-full:MeasurementAxis
3534 Aggregated measurement [member] Member ifrs-full:AggregatedMeasurementMember
3535 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
3536 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
3537 Debt Securities [Member] Member ifrs-full:DebtSecuritiesMember
3538 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
3539 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
3540 Securities issued by other financial institutions [Member] Member cib:SecuritiesIssuedByOtherFinancialInstitutionsMember
3541 Corporate bonds [Member] Member cib:CorporateBondsMember
3542 Equity Securities [Member] Member cib:EquitySecurities1Member
3543 Securities issued by the Colombian Government [Member] Member cib:SecuritiesIssuedByColombianGovernmentMember
3544 Derrivative Foreign Exchange Contracts And Interest Rate Contracts [Member] Member cib:DerrivativeForeignExchangeContractsAndInterestRateContractsMember
3545 Valuation techniques used in fair value measurement [axis] Axis ifrs-full:ValuationTechniquesUsedInFairValueMeasurementAxis
3546 Valuation techniques [member] Member ifrs-full:ValuationTechniquesMember
3547 Direct capitalization-initial rate [Member] Member cib:DirectCapitalizationinitialRateMember
3548 Discounted cash flow [member] Member ifrs-full:DiscountedCashFlowMember
3549 Range [Axis] Axis ifrs-full:RangeAxis
3550 Ranges [member] Member ifrs-full:RangesMember
3551 Terminal rate [Member] Member cib:TerminalRateMember
3552 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
3553 Assets [member] Member ifrs-full:ClassesOfAssetsMember
3554 Trading equity securities [member] Member ifrs-full:TradingEquitySecuritiesMember
3555 Disclosure of fair value of assets and liabilities [Line Items] LineItems cib:DisclosureOfFairValueOfAssetsAndLiabilitiesLineItems
3556 Transfers out of Level 3 of fair value hierarchy, assets Concept (Monetary) For Period Credit ifrs-full:TransfersOutOfLevel3OfFairValueHierarchyAssets
3557 Transfers out of Level 2 into Level 1 of fair value hierarchy, assets held at end of reporting period Concept (Monetary) For Period ifrs-full:TransfersOutOfLevel2IntoLevel1OfFairValueHierarchyAssets
3558 Interest rate, significant unobservable inputs, assets Concept (Percent) For Period ifrs-full:InterestRateSignificantUnobservableInputsAssets
3559 Ratio between monthly gross income and real estate value Concept (Percent) For Period cib:RatioBetweenMonthlyGrossIncomeAndRealEstateValue
3560 Revenue multiple, significant unobservable inputs, assets Concept (Pure) For Period ifrs-full:RevenueMultipleSignificantUnobservableInputsAssets
3561 Unrealized gains and losses Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeNetOfTax
3562 Transfers out of Level 1 into Level 2 of fair value hierarchy, assets held at end of reporting period Concept (Monetary) For Period ifrs-full:TransfersOutOfLevel1IntoLevel2OfFairValueHierarchyAssets
3563 1236 - Disclosure - DISCONTINUED OPERATIONS (Details) Network

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*

http://www.grupobancolombia.com/role/DiscontinuedOperationsDetails
3564 Disclosure of discontinued operations [Table] Table

*

*

cib:DisclosureOfDiscontinuedOperationsTable
3565 Continuing and discontinued operations [axis] Axis ifrs-full:ContinuingAndDiscontinuedOperationsAxis
3566 Aggregate continuing and discontinued operations [member] Member ifrs-full:AggregateContinuingAndDiscontinuedOperationsMember
3567 Discontinued operations [member] Member ifrs-full:DiscontinuedOperationsMember
3568 Disclosure of discontinued operations [Line Items] LineItems cib:DisclosureOfDiscontinuedOperationsLineItems
3569 Interest income on loans Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnLoansAndReceivables
3570 Overnight and market funds Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnCashAndCashEquivalents
3571 Interest and valuation on investment Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnHeldtomaturityInvestments
3572 Total interest and valuation Concept (Monetary) For Period Credit ifrs-full:RevenueFromInterest
3573 Interest expense Concept (Monetary) For Period Debit ifrs-full:InterestExpense
3574 Net margin on financial instruments Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss
3575 Credit impairment charges on loans, net Concept (Monetary) For Period Debit cib:CreditImpairmentChargesOnLoansnet
3576 Net interest and valuation income after provision for loans and financial leases Concept (Monetary) For Period Credit cib:NetInterestAndValuationIncomeExpenseAfterProvisionForLoansAndFinancialLeases
3577 Fees and other service income, net Concept (Monetary) For Period Credit ifrs-full:FeeAndCommissionIncomeExpense
3578 Other operating income Concept (Monetary) For Period Credit ifrs-full:OtherOperatingIncomeExpense
3579 Total income, net Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
3580 Total operating expenses Concept (Monetary) For Period Debit ifrs-full:OperatingExpense
3581 Profit before tax Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
3582 Income tax Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
3583 Net profit of discontinued operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromDiscontinuedOperations
3584 1237 - Disclosure - DISCONTINUED OPERATIONS (Details Textual) Network

*

*

http://www.grupobancolombia.com/role/DiscontinuedOperationsDetailsTextual
3585 Disclosure of discontinued operations [Table] Table

*

*

cib:DisclosureOfDiscontinuedOperationsTable
3586 Measurement [axis] Axis ifrs-full:MeasurementAxis
3587 Aggregated measurement [member] Member ifrs-full:AggregatedMeasurementMember
3588 At fair value [member] Member ifrs-full:AtFairValueMember
3589 Continuing and discontinued operations [axis] Axis ifrs-full:ContinuingAndDiscontinuedOperationsAxis
3590 Aggregate continuing and discontinued operations [member] Member ifrs-full:AggregateContinuingAndDiscontinuedOperationsMember
3591 Discontinued operations [member] Member ifrs-full:DiscontinuedOperationsMember
3592 Financiamiento Tuya S.A [Axis] Axis cib:FinanciamientoTuyaSaAxis
3593 Financiamiento Tuya S.A. [Domain] Member cib:FinanciamientoTuyaSaDomain
3594 Financiamiento Tuya S.A. [Member] Member cib:FinanciamientoTuyaSaMember
3595 Disclosure of discontinued operations [Line Items] LineItems cib:DisclosureOfDiscontinuedOperationsLineItems
3596 Investments in joint ventures Concept (Monetary) As Of Debit ifrs-full:InvestmentsInJointVentures
3597 Consideration transferred, acquisition-date fair value Concept (Monetary) As Of Credit ifrs-full:AcquisitiondateFairValueOfTotalConsiderationTransferred
3598 Profit (loss) from discontinued operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromDiscontinuedOperations
3599 Tax expense relating to gain (loss) on discontinuance Concept (Monetary) For Period Debit ifrs-full:TaxExpenseRelatingToGainLossOnDiscontinuance
3600 Deferred tax expense (income) recognised in profit or loss Concept (Monetary) For Period ifrs-full:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
3601 Percentage of voting equity interests acquired Concept (Percent) As Of ifrs-full:PercentageOfVotingEquityInterestsAcquired
3602 1238 - Disclosure - RISK MANAGEMENT (Details) Network

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*

http://www.grupobancolombia.com/role/RiskManagementDetails
3603 Disclosure Of Risk Management [Table] Table

*

*

cib:DisclosureOfRiskManagementsTable
3604 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
3605 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
3606 Loans and Advances [member] Member ifrs-full:LoansAndReceivablesCategoryMember
3607 Off-Balance Sheet Exposures [member] Member cib:OffBalanceSheetFinancialAssetsMember
3608 Other Financial Instruments [member] Member cib:OtherFinancialInstrumentMember
3609 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
3610 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
3611 Commercial Loans [member] Member cib:CommercialLoansMember
3612 Consumer loans [member] Member ifrs-full:ConsumerLoansMember
3613 Mortgages [member] Member ifrs-full:MortgagesMember
3614 Small Business Loans [member] Member ifrs-full:CorporateLoansMember
3615 Financial Leases [member] Member ifrs-full:LeaseReceivablesMember
3616 Financial guarantee contracts [member] Member ifrs-full:FinancialGuaranteeContractsMember
3617 Loan commitments [member] Member ifrs-full:LoanCommitmentsMember
3618 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
3619 Assets [member] Member ifrs-full:ClassesOfAssetsMember
3620 Debt Securities [Member] Member cib:DebtSecuritieMember
3621 Derivatives [member] Member ifrs-full:DerivativesMember
3622 Trading equity securities [member] Member ifrs-full:TradingEquitySecuritiesMember
3623 Type of measurement of expected credit losses [axis] Axis ifrs-full:TypeOfMeasurementOfExpectedCreditLossesAxis
3624 Type of measurement of expected credit losses [member] Member ifrs-full:TypeOfMeasurementOfExpectedCreditLossesMember
3625 Stage One [Member] Member cib:StageOneMember
3626 Stage Two [Member] Member cib:StageTwoMember
3627 Stage Three [Member] Member cib:StageThreeMember
3628 Disclosure Of Risk Management [Line Items] LineItems cib:DisclosureOfRiskManagementLineItems
3629 Maximum exposure Concept (Monetary) As Of ifrs-full:MaximumExposureToCreditRisk
3630 Collateral Concept (Monetary) As Of Debit ifrs-full:AssetsHeldAsCollateralPermittedToBeSoldOrRepledgedAtFairValue
3631 Net exposure Concept (Monetary) As Of ifrs-full:CreditExposure
3632 Allowance for loans, advances and lease losses Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
3633 1239 - Disclosure - RISK MANAGEMENT (Details 1) Network

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http://www.grupobancolombia.com/role/RiskManagementDetails1
3634 Disclosure Of Risk Managements [Table] Table

*

*

cib:DisclosureOfRiskManagementsTable
3635 Borrower Portfolio Segment [Axis] Axis cib:BorrowerPortfolioSegmentAxis
3636 Borrower Portfolio Segment [Domain] Member cib:BorrowerPortfolioSegmentDomain
3637 Business [Member] Member cib:BusinessMember
3638 Business Construction [Member] Member cib:BusinessConstructionMember
3639 Corporate Construction [Member] Member cib:CorporateConstructionMember
3640 Corporate [Member] Member cib:CorporatesMember
3641 Institutional Financing [Member] Member cib:InstitutionalFinancingMember
3642 Government [Member] Member cib:GovernmentsMember
3643 SME [Member] Member cib:SmeMember
3644 SME Construction [Member] Member cib:SMEConstructionMember
3645 Disclosure Of Risk Management [Line Items] LineItems cib:DisclosureOfRiskManagementLineItems
3646 Information about risk management strategy for rights that lessor retains in underlying assets Concept (Text/String) For Period ifrs-full:InformationAboutRiskManagementStrategyForRightsThatLessorRetainsInUnderlyingAssets
3647 1240 - Disclosure - RISK MANAGEMENT (Details 2) Network

*

*

http://www.grupobancolombia.com/role/RiskManagementDetails2
3648 Statement [Table] Table

*

*

us-gaap:StatementTable
3649 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
3650 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
3651 Small Business Loans [Member] Member cib:SmallBusinessLoansMember
3652 Risk Level [Axis] Axis cib:RiskLevelAxis
3653 Risk Level [Domain] Member cib:RiskLevelDomain
3654 Level 1 - Low Risk [Member] Member cib:Level1LowRiskMember
3655 Level 2 - Medium Risk [Member] Member cib:Level2MediumRiskMember
3656 Level 3 - High Risk [Member] Member cib:Level3HighRiskMember
3657 Level 4 - Default [Member] Member cib:Level4DefaultMember
3658 Statement [Line Items] LineItems us-gaap:StatementLineItems
3659 Financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
3660 Percentage of Allowance Recorded on Financial Assets Concept (Percent) For Period cib:PercentageOfAllowanceRecordedOnFinancialAssets
3661 Allowance account for credit losses of financial assets Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
3662 1241 - Disclosure - RISK MANAGEMENT (Details 3) Network

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http://www.grupobancolombia.com/role/RiskManagementDetails3
3663 Schedule Of Risk Management [Table] Table

*

*

cib:ScheduleOfRiskManagementTable
3664 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
3665 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
3666 Commercial Loans [member] Member cib:CommercialLoansMember
3667 Consumer loans [member] Member ifrs-full:ConsumerLoansMember
3668 Mortgages [Member] Member ifrs-full:MortgagesMember
3669 Lease receivables [member] Member ifrs-full:LeaseReceivablesMember
3670 Corporate loans [member] Member ifrs-full:CorporateLoansMember
3671 Collateral Type [Axis] Axis cib:CollateralTypeAxis
3672 Collateral Type [Domain] Member cib:CollateralTypeDomain
3673 Real Estate and Residential [Member] Member cib:RealEstateAndResidentialMember
3674 Goods Given in Real Estate Leasing [Member] Member cib:GoodsGivenInRealEstateLeasingMember
3675 Goods Given in Leasing Other Than Real Estate [Member] Member cib:GoodsGivenInLeasingOtherThanRealEstateMember
3676 Stand by Letter of Credit [Member] Member cib:StandByLetterOfCreditMember
3677 Security Deposits [Member] Member cib:SecurityDepositsMember
3678 Guarantee Fund [Member] Member cib:GuaranteeFundMember
3679 Sovereign of the Nation [Member] Member cib:SovereignOfNationMember
3680 Collection Rights [Member] Member cib:CollectionRightsMember
3681 Other Collateral [Member] Member cib:OtherCollateralMember
3682 Without Guarantee [Member] Member cib:WithoutGuaranteeMember
3683 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
3684 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
3685 Loans and receivables, category [member] Member ifrs-full:LoansAndReceivablesCategoryMember
3686 Disclosure Of Risk Management [Line Items] LineItems cib:DisclosureOfRiskManagementLineItems
3687 Maximum exposure to credit risk Concept (Monetary) As Of ifrs-full:MaximumExposureToCreditRisk
3688 1242 - Disclosure - RISK MANAGEMENT (Details 4) Network

*

*

http://www.grupobancolombia.com/role/RiskManagementDetails4
3689 Disclosure of risk management [Table] Table

*

*

cib:DisclosureOfRisksManagementTable
3690 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
3691 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
3692 Commercial [member] Member cib:CommercialLoansMember
3693 Corporate loans [member] Member ifrs-full:CorporateLoansMember
3694 SME Loans [member] Member cib:SmeLoansMember
3695 Other Commercial Loans [member] Member cib:OtherCommercialLoansMember
3696 Consumer [member] Member ifrs-full:ConsumerLoansMember
3697 Credit card Loans [member] Member cib:CreditCardLoansMember
3698 Vehicle Loans [member] Member cib:VehicleLoansMember
3699 Payroll loans [member] Member cib:PayrollLoansMember
3700 Others Consumer Loans [member] Member cib:OthersConsumerLoansMember
3701 Mortgage [member] Member ifrs-full:MortgagesMember
3702 VIS Mortgage Loans [member] Member cib:VisMortgageLoansMember
3703 Non-VIS Mortgage Loans [member] Member cib:NonvisMortgageLoansMember
3704 Financial Leases [member] Member ifrs-full:LeaseReceivablesMember
3705 Small business loans [member] Member cib:SmallBusinessLoanMember
3706 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
3707 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
3708 Loans and receivables, category [member] Member ifrs-full:LoansAndReceivablesCategoryMember
3709 Disclosure Of Risk Management [Line Items] LineItems cib:DisclosureOfRiskManagementLineItems
3710 Debt instruments held Concept (Monetary) As Of Debit ifrs-full:DebtInstrumentsHeld
3711 Allowance for loans, advances and lease losses Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
3712 Loans and advances to customers Concept (Monetary) As Of Debit ifrs-full:LoansAndAdvancesToCustomers
3713 1243 - Disclosure - RISK MANAGEMENT (Details 5) Network

*

*

http://www.grupobancolombia.com/role/RiskManagementDetails5
3714 Disclosure Of Risk Managements [Table] Table

*

*

cib:DisclosureOfRiskManagementsTable
3715 Maturity [axis] Axis ifrs-full:MaturityAxis
3716 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
3717 2019 Member ifrs-full:NotLaterThanOneYearMember
3718 Later than one year and not later than three years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanThreeYearsMember
3719 Later than three years and not later than five years [member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFiveYearsMember
3720 Later than five years [member] Member ifrs-full:LaterThanFiveYearsMember
3721 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
3722 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
3723 Commercial Loans [member] Member cib:CommercialLoansMember
3724 Corporate loans [member] Member ifrs-full:CorporateLoansMember
3725 SME Loans [member] Member cib:SmeLoansMember
3726 Other Commercial Loans [member] Member cib:OtherCommercialLoansMember
3727 Consumer loans [member] Member ifrs-full:ConsumerLoansMember
3728 Credit card Loans [member] Member cib:CreditCardLoansMember
3729 Vehicle Loans [member] Member cib:VehicleLoansMember
3730 Payroll loans [member] Member cib:PayrollLoansMember
3731 Others Consumer Loans [member] Member cib:OthersConsumerLoansMember
3732 Mortgages [Member] Member ifrs-full:MortgagesMember
3733 VIS Mortgage Loans [member] Member cib:VisMortgageLoansMember
3734 Non-VIS Mortgage Loans [member] Member cib:NonvisMortgageLoansMember
3735 Lease receivables [member] Member ifrs-full:LeaseReceivablesMember
3736 Small Business Loans [member] Member cib:SmallBusinessLoansMember
3737 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
3738 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
3739 Loans and receivables, category [member] Member ifrs-full:LoansAndReceivablesCategoryMember
3740 Disclosure Of Risk Management [Line Items] LineItems cib:DisclosureOfRiskManagementLineItems
3741 Debt instruments held Concept (Monetary) As Of Debit ifrs-full:DebtInstrumentsHeld
3742 1244 - Disclosure - RISK MANAGEMENT (Details 6) Network

*

*

http://www.grupobancolombia.com/role/RiskManagementDetails6
3743 Disclosure Of Risk Management [Table] Table

*

*

cib:DisclosureOfRiskManagementsTable
3744 Past due status [axis] Axis ifrs-full:PastDueStatusAxis
3745 Past due status [member] Member ifrs-full:PastDueStatusMember
3746 Not later than one month [member] Member ifrs-full:NotLaterThanOneMonthMember
3747 Later than one month and not later than three months [member] Member ifrs-full:LaterThanOneMonthAndNotLaterThanThreeMonthsMember
3748 Later than three months and not later than six months [member] Member ifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMember
3749 Later than six months and not later than one year [member] Member ifrs-full:LaterThanSixMonthsAndNotLaterThanOneYearMember
3750 Later than one year [member] Member ifrs-full:LaterThanOneYearMember
3751 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
3752 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
3753 Commercial Loans [member] Member cib:CommercialLoansMember
3754 Consumer loans [member] Member ifrs-full:ConsumerLoansMember
3755 Mortgages [Member] Member ifrs-full:MortgagesMember
3756 Lease receivables [member] Member ifrs-full:LeaseReceivablesMember
3757 Small Business Loans [member] Member cib:SmallBusinessLoansMember
3758 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
3759 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
3760 Loans and receivables, category [member] Member ifrs-full:LoansAndReceivablesCategoryMember
3761 Disclosure Of Risk Management [Line Items] LineItems cib:DisclosureOfRiskManagementLineItems
3762 Debt instruments held Concept (Monetary) As Of Debit ifrs-full:DebtInstrumentsHeld
3763 1245 - Disclosure - RISK MANAGEMENT (Details 7) Network

*

*

http://www.grupobancolombia.com/role/RiskManagementDetails7
3764 Disclosure Of Risk Management [Table] Table

*

*

cib:DisclosureOfRiskManagementsTable
3765 Markets of customers [axis] Axis ifrs-full:MarketsOfCustomersAxis
3766 Markets of customers [member] Member ifrs-full:MarketsOfCustomersMember
3767 Local Market [Member] Member cib:LocalMarketMember
3768 Foreign Market [Member] Member cib:ForeignMarketMember
3769 Economic sector [Axis] Axis cib:EconomicSectorAxis
3770 Economic sector [Domain] Member cib:EconomicSectorDomain
3771 Agriculture Sector [Member] Member cib:AgricultureSectorMember
3772 Petroleum and Mining Products Sector [Member] Member cib:PetroleumAndMiningProductsSectorMember
3773 Food, Beverages and Tobacco Sector [Member] Member cib:FoodBeveragesAndTobaccoSectorMember
3774 Chemical Production Sector [Member] Member cib:ChemicalProductionSectorMember
3775 Government Sector [Member] Member cib:GovernmentSectorsMember
3776 Construction Sector [Member] Member cib:ConstructionSectorMember
3777 Commerce and Tourism Sector [Member] Member cib:CommerceAndTourismSectorMember
3778 Transport and Communications Sector [Member] Member cib:TransportAndCommunicationsSectorMember
3779 Public Services Sector [Member] Member cib:PublicServicesSectorMember
3780 Consumer Services Sector [Member] Member cib:ConsumerServicesSectorMember
3781 Commercial Services Sector [Member] Member cib:CommercialServicesSectorMember
3782 Other Industries and Manufactured Products Sector [Member] Member cib:OtherIndustriesAndManufacturedProductsSectorMember
3783 Disclosure Of Risk Management [Line Items] LineItems cib:DisclosureOfRiskManagementLineItems
3784 Debt instruments held Concept (Monetary) As Of Debit ifrs-full:DebtInstrumentsHeld
3785 1246 - Disclosure - RISK MANAGEMENT (Details 8) Network

*

*

http://www.grupobancolombia.com/role/RiskManagementDetails8
3786 Disclosure Of Risk Management [Table] Table

*

*

cib:DisclosureOfRiskManagementsTable
3787 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
3788 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
3789 Other Countries [Member] Member cib:OtherCountriesMember
3790 Puerto rico [Member] Member country:PR
3791 Panama [Member] Member country:PA
3792 Colombia [Member] Member country:CO
3793 Guatemala [Member] Member country:GT
3794 EL SALVADOR [Member] Member country:SV
3795 Disclosure Of Risk Management [Line Items] LineItems cib:DisclosureOfRiskManagementLineItems
3796 Loans and advances Concept (Monetary) As Of Debit ifrs-full:DebtInstrumentsHeld
3797 % Participation Concept (Percent) As Of cib:ParticipationPercentageInLoansAndFinancialLeases
3798 Allowance for loans and advances and lease losses Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
3799 % Participation Concept (Percent) As Of cib:ParticipationPercentageInAllowanceForLoansAndFinancialLeases
3800 1247 - Disclosure - RISK MANAGEMENT (Details 9) Network

*

*

http://www.grupobancolombia.com/role/RiskManagementDetails9
3801 Disclosure Of Risk Management [Table] Table

*

*

cib:DisclosureOfRiskManagementsTable
3802 Impairment of financial assets [axis] Axis ifrs-full:ImpairmentOfFinancialAssetsAxis
3803 Entity's total for impairment of financial assets [member] Member ifrs-full:EntitysTotalForImpairmentOfFinancialAssetsMember
3804 Financial assets neither past due nor impaired [member] Member ifrs-full:FinancialAssetsNeitherPastDueNorImpairedMember
3805 Financial assets past due but not impaired [member] Member ifrs-full:FinancialAssetsPastDueButNotImpairedMember
3806 Financial assets impaired [member] Member ifrs-full:FinancialAssetsImpairedMember
3807 Financial Assets Past Due And Impaired [Member] Member cib:FinancialAssetsPastDueAndImpairedMember
3808 Stage 1 Member cib:CreditQualityOfTheBorrowerStageOneMember
3809 Stage 2 Member cib:CreditQualityOfTheBorrowerStageTwoMember
3810 Stage 3 Member cib:CreditQualityOfTheBorrowerStageThreeMember
3811 Simplified methodology Member cib:CreditQualityOfTheBorrowerSimplifiedMethodologyMember
3812 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
3813 Risks [member] Member ifrs-full:TypesOfRisksMember
3814 Normal Risk [Member] Member cib:NormalRiskMember
3815 Acceptable Risk [Member] Member cib:AcceptableRiskMember
3816 Appreciable Risk [Member] Member cib:AppreciableRiskMember
3817 Significant Risk [Member] Member cib:SignificantRiskMember
3818 Unrecoverable Risk [Member] Member cib:UnrecoverableRiskMember
3819 Disclosure Of Risk Management [Line Items] LineItems cib:DisclosureOfRiskManagementLineItems
3820 Debt instruments held Concept (Monetary) As Of Debit ifrs-full:DebtInstrumentsHeld
3821 1248 - Disclosure - RISK MANAGEMENT (Details 10) Network

*

*

http://www.grupobancolombia.com/role/RiskManagementDetails10
3822 Disclosure Of Risk Management [Table] Table

*

*

cib:DisclosureOfRiskManagementsTable
3823 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
3824 Carrying amount [member] Member ifrs-full:CarryingAmountMember
3825 Gross carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
3826 Accumulated impairment [member] Member ifrs-full:AccumulatedImpairmentMember
3827 ECL Member cib:EconomicConformanceLevelMember
3828 Impairment of financial assets [axis] Axis ifrs-full:ImpairmentOfFinancialAssetsAxis
3829 Entity's total for impairment of financial assets [member] Member ifrs-full:EntitysTotalForImpairmentOfFinancialAssetsMember
3830 Financial assets individually assessed for credit losses [member] Member ifrs-full:FinancialAssetsIndividuallyAssessedForCreditLossesMember
3831 Financial assets collectively assessed for credit losses [member] Member ifrs-full:FinancialAssetsCollectivelyAssessedForCreditLossesMember
3832 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
3833 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
3834 Commercial Loans [member] Member cib:CommercialLoansMember
3835 Consumer loans [member] Member ifrs-full:ConsumerLoansMember
3836 Mortgages [Member] Member ifrs-full:MortgagesMember
3837 Lease receivables [member] Member ifrs-full:LeaseReceivablesMember
3838 Small Business Loan [member] Member cib:SmallBusinessLoanMember
3839 Disclosure Of Risk Management [Line Items] LineItems cib:DisclosureOfRiskManagementLineItems
3840 Financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
3841 1249 - Disclosure - RISK MANAGEMENT (Details 12) Network

*

*

http://www.grupobancolombia.com/role/RiskManagementDetails12
3842 Disclosure Of Risk Managements [Table] Table

*

*

cib:DisclosureOfRiskManagementsTable
3843 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
3844 Assets [member] Member ifrs-full:ClassesOfAssetsMember
3845 Debt Securities [Member] Member ifrs-full:DebtSecuritiesMember
3846 Trading equity securities [member] Member ifrs-full:TradingEquitySecuritiesMember
3847 Derivatives [member] Member ifrs-full:DerivativesMember
3848 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
3849 Risks [member] Member ifrs-full:TypesOfRisksMember
3850 Low Risk [Member] Member cib:LowRiskMember
3851 Medium Risk [Member] Member cib:MediumRiskMember
3852 High Risk [Member] Member cib:HighRiskMember
3853 Without Rating [Member] Member cib:WithoutRatingMember
3854 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
3855 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
3856 Other Financial Instruments [Member] Member cib:OtherFinancialInstrumentsMember
3857 Disclosure Of Risk Management [Line Items] LineItems cib:DisclosureOfRiskManagementLineItems
3858 Maximum exposure to credit risk Concept (Monetary) As Of ifrs-full:MaximumExposureToCreditRisk
3859 1250 - Disclosure - RISK MANAGEMENT (Details 13) Network

*

*

http://www.grupobancolombia.com/role/RiskManagementDetails13
3860 Disclosure Of Risk Managements [Table] Table

*

*

cib:DisclosureOfRiskManagementsTable
3861 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
3862 Assets [member] Member ifrs-full:ClassesOfAssetsMember
3863 Debt Securities [Member] Member ifrs-full:DebtSecuritiesMember
3864 Derivatives [member] Member ifrs-full:DerivativesMember
3865 Trading equity securities [member] Member ifrs-full:TradingEquitySecuritiesMember
3866 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
3867 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
3868 Other Financial Instruments [member] Member cib:OtherFinancialInstrumentsMember
3869 Disclosure Of Risk Management [Line Items] LineItems cib:DisclosureOfRiskManagementLineItems
3870 Maximum exposure to credit risk Concept (Monetary) As Of ifrs-full:MaximumExposureToCreditRisk
3871 Financial assets pledged as collateral for liabilities or contingent liabilities Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities
3872 Net exposure Concept (Monetary) As Of ifrs-full:CreditExposure
3873 1251 - Disclosure - RISK MANAGEMENT (Details 14) Network

*

*

http://www.grupobancolombia.com/role/RiskManagementDetails14
3874 Disclosure Of Risk Managements [Table] Table

*

*

cib:DisclosureOfRiskManagementsTable
3875 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
3876 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
3877 Financial assets at fair value, class [member] Member ifrs-full:FinancialAssetsAtFairValueMember
3878 Financial assets at amortised cost, class [member] Member ifrs-full:FinancialAssetsAtAmortisedCostMember
3879 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
3880 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
3881 Financial assets at fair value through profit or loss, category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
3882 Financial assets at fair value through other comprehensive income, category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember
3883 Other Financial Instruments [member] Member cib:OtherFinancialInstrumentsMember
3884 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
3885 Assets [member] Member ifrs-full:ClassesOfAssetsMember
3886 Debt Securities [Member] Member ifrs-full:DebtSecuritiesMember
3887 Trading equity securities [member] Member ifrs-full:TradingEquitySecuritiesMember
3888 Disclosure Of Risk Management [Line Items] LineItems cib:DisclosureOfRiskManagementLineItems
3889 Maximum exposure to credit risk Concept (Monetary) As Of ifrs-full:MaximumExposureToCreditRisk
3890 Impairment loss on financial assets Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossOnFinancialAssets
3891 Credit exposure Concept (Monetary) As Of ifrs-full:CreditExposure
3892 1252 - Disclosure - RISK MANAGEMENT (Details 15) Network

*

*

http://www.grupobancolombia.com/role/RiskManagementDetails15
3893 Disclosure Of Risk Managements [Table] Table

*

*

cib:DisclosureOfRiskManagementsTable
3894 Types of customers [axis] Axis ifrs-full:TypesOfCustomersAxis
3895 Types of customers [member] Member ifrs-full:TypesOfCustomersMember
3896 Corporate Sector [member] Member cib:CorporateSectorMember
3897 Financial Sector [member] Member cib:FinancialSectorMember
3898 Funds and ETF Sector [member] Member cib:FundsAndEtfSectorMember
3899 Government Sectors [member] Member cib:GovernmentSectorsMember
3900 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
3901 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
3902 North America [member] Member cib:NorthAmericanMember
3903 Latam [member] Member cib:LatamMember
3904 Europe [member] Member cib:EuropenMember
3905 Others [member] Member cib:OthersMember
3906 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
3907 Assets [member] Member ifrs-full:ClassesOfAssetsMember
3908 Debt Securities [Member] Member ifrs-full:DebtSecuritiesMember
3909 Trading equity securities [member] Member ifrs-full:TradingEquitySecuritiesMember
3910 Derivatives [member] Member ifrs-full:DerivativesMember
3911 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
3912 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
3913 Other Financial Instruments [member] Member cib:FinancialInstrumentsMember
3914 Disclosure Of Risk Management [Line Items] LineItems cib:DisclosureOfRiskManagementLineItems
3915 Maximum Exposure to Credit Risk Concept (Monetary) As Of ifrs-full:MaximumExposureToCreditRisk
3916 1253 - Disclosure - RISK MANAGEMENT (Details 16) Network

*

*

http://www.grupobancolombia.com/role/RiskManagementDetails16
3917 Disclosure Of Risk Managements [Table] Table

*

*

cib:DisclosureOfRiskManagementsTable
3918 Time band [Axis] Axis cib:TimeBandAxis
3919 Time band [Domain] Member cib:TimeBandDomain
3920 Band One [Member] Member cib:BandOneMember
3921 Band Two [Member] Member cib:BandTwoMember
3922 Band Three [Member] Member cib:BandThreeMember
3923 Band Four [Member] Member cib:BandFourMember
3924 Band Five [Member] Member cib:BandFiveMember
3925 Band Six [Member] Member cib:BandSixMember
3926 Band Seven [Member] Member cib:BandSevenMember
3927 Band Eight [Member] Member cib:BandEightMember
3928 Band Nine [Member] Member cib:BandNineMember
3929 Band Ten [Member] Member cib:BandTenMember
3930 Band Eleven [Member] Member cib:BandElevenMember
3931 Band Twelve [Member] Member cib:BandTwelveMember
3932 Band Thirteen [Member] Member cib:BandThirteenMember
3933 Band Fourteen [Member] Member cib:BandFourteenMember
3934 Band Fifteen [Member] Member cib:BandFifteenMember
3935 Range [Axis] Axis ifrs-full:RangeAxis
3936 Ranges [member] Member ifrs-full:RangesMember
3937 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
3938 Top of range [member] Member ifrs-full:TopOfRangeMember
3939 Type of Currency [Axis] Axis cib:TypeOfCurrencyAxis
3940 Type of currency [Domain] Member cib:TypeOfCurrencyDomain
3941 Legal Currency [Member] Member cib:LegalCurrencyMember
3942 UVR [Member] Member cib:UvrMember
3943 Foreign Currency [Member] Member cib:ForeignCurrencyMember
3944 Disclosure Of Risk Management [Line Items] LineItems cib:DisclosureOfRiskManagementLineItems
3945 Changes in interest rates due to change in value of currency Concept (Percent) For Period cib:ChangesInInterestRatesDueToChangeInValueOfCurrency
3946 Modified Duration Concept (xbrli:durationItemType) For Period cib:ModifiedDuration
3947 1254 - Disclosure - RISK MANAGEMENT (Details 17) Network

*

*

http://www.grupobancolombia.com/role/RiskManagementDetails17
3948 Statement [Table] Table

*

*

us-gaap:StatementTable
3949 Class of Stock [Axis] Axis us-gaap:StatementClassOfStockAxis
3950 Class of Stock [Domain] Member us-gaap:ClassOfStockDomain
3951 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
3952 Assets [member] Member ifrs-full:ClassesOfAssetsMember
3953 High quality liquid assets [Member] Member cib:HighQualityLiquidAssetsMember
3954 Other liquid assets [Member] Member cib:OtherLiquidAssetsMember
3955 Liquid assets [Member] Member cib:LiquidAssetsMember
3956 Statement [Line Items] LineItems us-gaap:StatementLineItems
3957 Cash Concept (Monetary) As Of Debit ifrs-full:Cash
3958 Short-term investments, classified as cash equivalents Concept (Monetary) As Of Debit ifrs-full:ShorttermInvestmentsClassifiedAsCashEquivalents
3959 Money market transactions Concept (Monetary) For Period Debit cib:MoneyMarketTransactions
3960 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
3961 1255 - Disclosure - RISK MANAGEMENT (Details 18) Network

*

*

http://www.grupobancolombia.com/role/RiskManagementDetails18
3962 Disclosure Of Risk Managements [Table] Table

*

*

cib:DisclosureOfRiskManagementsTable
3963 Type of Currency [Axis] Axis cib:TypeOfCurrencyAxis
3964 Type of currency [Domain] Member cib:TypeOfCurrencyDomain
3965 United States Dollar [Member] Member cib:UnitedStatesDollarMember
3966 Euro [Member] Member cib:EuroMember
3967 Other currencies [Member] Member cib:OtherCurrenciesMember
3968 Equity and Fund Risk [Member] Member cib:EquityAndFundRiskMember
3969 Disclosure Of Risk Management [Line Items] LineItems cib:DisclosureOfRiskManagementLineItems
3970 Currency Risk, Sensitivity Factor Concept (Percent) For Period cib:CurrencyRiskSensitivityFactor
3971 1256 - Disclosure - RISK MANAGEMENT (Details 19) Network

*

*

http://www.grupobancolombia.com/role/RiskManagementDetails19
3972 Disclosure Of Risk Managements [Table] Table

*

*

cib:DisclosureOfRiskManagementsTable
3973 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
3974 Risks [member] Member ifrs-full:TypesOfRisksMember
3975 Interest Rate [member] Member us-gaap:InterestRateRiskMember
3976 Exchange Rate [member] Member ifrs-full:CurrencyRiskMember
3977 Share Price [member] Member ifrs-full:EquityPriceRiskMember
3978 Collective Portfolios [member] Member ifrs-full:OtherPriceRiskMember
3979 Range [Axis] Axis ifrs-full:RangeAxis
3980 Ranges [member] Member ifrs-full:RangesMember
3981 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
3982 Weighted Average [Member] Member ifrs-full:WeightedAverageMember
3983 Top of range [member] Member ifrs-full:TopOfRangeMember
3984 Disclosure Of Risk Management [Line Items] LineItems cib:DisclosureOfRiskManagementLineItems
3985 Value at risk Concept (Monetary) As Of ifrs-full:ValueAtRisk
3986 1257 - Disclosure - RISK MANAGEMENT (Details 20) Network

*

*

http://www.grupobancolombia.com/role/RiskManagementDetails20
3987 Implied Table Table

*

*

implied:Table
3988 Disclosure Of Risk Management [Abstract] Abstract cib:DisclosureOfRiskManagementAbstract
3989 Assets sensitivity 100 bps Concept (Monetary) As Of Debit cib:InterestRateRiskSensitivityAssets
3990 Liabilities sensitivity 100 bps Concept (Monetary) As Of Credit cib:InterestRateRiskSensitivityLiabilities
3991 Net interest income sensitivity 100 bps Concept (Monetary) As Of Debit cib:InterestRateRiskSensitivityNet
3992 1258 - Disclosure - RISK MANAGEMENT (Details 21) Network

*

*

http://www.grupobancolombia.com/role/RiskManagementDetails21
3993 Implied Table Table

*

*

implied:Table
3994 Disclosure Of Risk Management [Abstract] Abstract cib:DisclosureOfRiskManagementAbstract
3995 Fair Value Concept (Monetary) For Period Credit cib:SharePriceFairValue
3996 Delta Concept (Percent) For Period ifrs-full:HistoricalVolatilityForSharesSignificantUnobservableInputsAssets
3997 Sensitivity Concept (Monetary) For Period Credit cib:SharePriceSensitivity
3998 1259 - Disclosure - RISK MANAGEMENT (Details 22) Network

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*

http://www.grupobancolombia.com/role/RiskManagementDetails22
3999 Implied Table Table

*

*

implied:Table
4000 Disclosure Of Risk Management [Abstract] Abstract cib:DisclosureOfRiskManagementAbstract
4001 Net cash outflows into 30 days Concept (Monetary) For Period Credit cib:NetCashOutfolwsDuringMonth
4002 Liquid Assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
4003 Liquidity coverage ratio Concept (Percent) For Period cib:LiquidityCoverageRatio
4004 1260 - Disclosure - RISK MANAGEMENT (Details 23) Network

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*

http://www.grupobancolombia.com/role/RiskManagementDetails23
4005 Disclosure Of Risk Management [Table] Table

*

*

cib:DisclosureOfRiskManagementsTable
4006 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
4007 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
4008 Cash and balances with central bank [Member] Member cib:CashAndBalancesWithCentralBankMember
4009 Interbank borrowings - Repurchase agreements [Member] Member cib:InterbankBorrowingsRepurchaseAgreementsMember
4010 Financial assets investments [Member] Member cib:FinancialAssetsInvestmentsMember
4011 Loans and advances to customers [Member] Member cib:LoansAndAdvancesToCustomersMember
4012 Derivative financial instruments [Member] Member cib:DerivativeFinancialInstrumentsMember
4013 Maturity [axis] Axis ifrs-full:MaturityAxis
4014 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
4015 2019 Member ifrs-full:NotLaterThanOneYearMember
4016 Later than one year and not later than three years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanThreeYearsMember
4017 Later than three years and not later than five years [member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFiveYearsMember
4018 Later than five years [member] Member ifrs-full:LaterThanFiveYearsMember
4019 Disclosure Of Risk Management [Line Items] LineItems cib:DisclosureOfRiskManagementLineItems
4020 Financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
4021 1261 - Disclosure - RISK MANAGEMENT (Details 24) Network

*

*

http://www.grupobancolombia.com/role/RiskManagementDetails24
4022 Disclosure Of Risk Managements [Table] Table

*

*

cib:DisclosureOfRiskManagementsTable
4023 Classes of financial liabilities [axis] Axis ifrs-full:ClassesOfFinancialLiabilitiesAxis
4024 Financial liabilities, class [member] Member ifrs-full:FinancialLiabilitiesMember
4025 Demand deposit from customers [Member] Member cib:DemandDepositFromCustomersMember
4026 Time deposits from customers [Member] Member cib:TimeDepositsFromCustomersMember
4027 Interbank deposits - Repurchase agreements [Member] Member cib:InterbankDepositsRepurchaseAgreementsMember
4028 Borrowings from other financial institutions [Member] Member cib:BorrowingsFromOtherFinancialInstitutionsMember
4029 Debt securities in issue [Member] Member cib:DebtSecuritiesInIssueMember
4030 Derivative financial instruments [Member] Member cib:DerivativeFinancialInstrumentsMember
4031 Maturity [axis] Axis ifrs-full:MaturityAxis
4032 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
4033 2019 Member ifrs-full:NotLaterThanOneYearMember
4034 Later than one year and not later than three years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanThreeYearsMember
4035 Later than three years and not later than five years [member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFiveYearsMember
4036 Later than five years [member] Member ifrs-full:LaterThanFiveYearsMember
4037 Disclosure Of Risk Management [Line Items] LineItems cib:DisclosureOfRiskManagementLineItems
4038 Financial liabilities Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilities
4039 1262 - Disclosure - RISK MANAGEMENT (Details 25) Network

*

*

http://www.grupobancolombia.com/role/RiskManagementDetails25
4040 Disclosure Of Risk Management [Table] Table

*

*

cib:DisclosureOfRiskManagementsTable
4041 Maturity [axis] Axis ifrs-full:MaturityAxis
4042 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
4043 2019 Member ifrs-full:NotLaterThanOneYearMember
4044 Later than one year and not later than three years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanThreeYearsMember
4045 Later than three years and not later than five years [member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFiveYearsMember
4046 Later than five years [member] Member ifrs-full:LaterThanFiveYearsMember
4047 Disclosure Of Risk Management [Line Items] LineItems cib:DisclosureOfRiskManagementLineItems
4048 Financial guarantees Concept (Monetary) As Of Credit cib:FinancialGuarantees
4049 1263 - Disclosure - RISK MANAGEMENT (Details 26) Network

*

*

http://www.grupobancolombia.com/role/RiskManagementDetails26
4050 Statement [Table] Table

*

*

us-gaap:StatementTable
4051 Capital requirements [axis] Axis ifrs-full:CapitalRequirementsAxis
4052 Capital requirements [member] Member ifrs-full:CapitalRequirementsMember
4053 Regulatory capital requirements [Member] Member cib:RegulatoryCapitalRequirementsMember
4054 Statement [Line Items] LineItems us-gaap:StatementLineItems
4055 Regulatory Capital and Capital Adequacy Ratios Abstract ifrs-full:CapitalCommitmentsAbstract
4056 Basic Ordinary Equity Concept (Monetary) As Of Credit cib:BasicOrdinaryEquity
4057 Deductions Basic Ordinary Equity Concept (Monetary) As Of Credit cib:DeductionsBasicOrdinaryEquity
4058 Total Basic Ordinary Equity Concept (Monetary) As Of Credit cib:BasicOrdinaryEquityNet
4059 Additional Equity Concept (Monetary) As Of Credit cib:AdditonalEquity
4060 Total Regulatory Capital Concept (Monetary) As Of Credit cib:RegulatoryCapital
4061 Primary capital to risk-weighted assets (Tier I) Concept (Percent) As Of cib:TierOneRiskBasedCapitalRatio
4062 Secondary capital to risk-weighted assets (Tier II) Concept (Percent) As Of cib:TierTwoRiskBasedCapitalRatio
4063 Technical capital to risk-weighted assets Concept (Percent) As Of cib:RiskBasedCapitalRatio
4064 1264 - Disclosure - RISK MANAGEMENT (Details 27) Network

*

*

http://www.grupobancolombia.com/role/RiskManagementDetails27
4065 Statement [Table] Table

*

*

us-gaap:StatementTable
4066 Class of Stock [Axis] Axis us-gaap:StatementClassOfStockAxis
4067 Class of Stock [Domain] Member us-gaap:ClassOfStockDomain
4068 Internal credit grades [axis] Axis ifrs-full:InternalCreditGradesAxis
4069 Entity's total for internal credit grades [member] Member ifrs-full:EntitysTotalForInternalCreditGradesMember
4070 Sovereign Risk [Member] Member cib:SovereignRiskMember
4071 AAA Credit Rating [Member] Member cib:AAACreditRatingMember
4072 AACredit Rating [Member] Member cib:AACreditRatingMember
4073 AA+Credit Rating [Member] Member cib:AAPlusCreditRatingMember
4074 AA-Credit Rating [Member] Member cib:AAMinusCreditRatingMember
4075 A+ Credit Rating [Member] Member cib:APlusCreditRatingMember
4076 A- Credit Rating [Member] Member cib:AMinusCreditRatingMember
4077 A Credit Rating [Member] Member cib:ACreditRatingMember
4078 BBB+ Credit Rating [Member] Member cib:BBBPlusCreditRatingMember
4079 BBB- Credit Rating [Member] Member cib:BBBMinusCreditRatingMember
4080 BBB Credit Rating [Member] Member cib:BBBCreditRatingMember
4081 Otros Credit Rating [Member] Member cib:OtrosCreditRatingMember
4082 Statement [Line Items] LineItems us-gaap:StatementLineItems
4083 Rated credit exposures Concept (Monetary) As Of ifrs-full:RatedCreditExposures
4084 Unrated credit exposures Concept (Monetary) As Of ifrs-full:UnratedCreditExposures
4085 Credit exposure Concept (Monetary) As Of ifrs-full:CreditExposure
4086 1265 - Disclosure - RISK MANAGEMENT (Details 28) Network

*

*

http://www.grupobancolombia.com/role/RiskManagementDetails28
4087 Statement [Table] Table

*

*

us-gaap:StatementTable
4088 Class of Stock [Axis] Axis us-gaap:StatementClassOfStockAxis
4089 Class of Stock [Domain] Member us-gaap:ClassOfStockDomain
4090 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
4091 Assets [member] Member ifrs-full:ClassesOfAssetsMember
4092 Debt Securities [Member] Member ifrs-full:DebtSecuritiesMember
4093 Derivatives [member] Member ifrs-full:DerivativesMember
4094 Trading equity securities [member] Member ifrs-full:TradingEquitySecuritiesMember
4095 Statement [Line Items] LineItems us-gaap:StatementLineItems
4096 Financial assets pledged as collateral for liabilities or contingent liabilities Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities
4097 Description of terms and conditions of financial assets pledged as collateral for liabilities or contingent liabilities Concept (Text/String) For Period ifrs-full:DescriptionOfTermAndConditionsOfFinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities
4098 1266 - Disclosure - RISK MANAGEMENT (Details 29) Network

*

*

http://www.grupobancolombia.com/role/RiskManagementDetails29
4099 Statement [Table] Table

*

*

us-gaap:StatementTable
4100 Class of Stock [Axis] Axis us-gaap:StatementClassOfStockAxis
4101 Class of Stock [Domain] Member us-gaap:ClassOfStockDomain
4102 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
4103 Carrying amount [member] Member ifrs-full:CarryingAmountMember
4104 Gross carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
4105 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
4106 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
4107 Commercial Loans [Member] Member cib:CommercialLoansMember
4108 Mortgages [Member] Member ifrs-full:MortgagesMember
4109 Financial leases [Member] Member cib:FinancialLeasesMember
4110 Statement [Line Items] LineItems us-gaap:StatementLineItems
4111 Financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
4112 Allowance account for credit losses of financial assets Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
4113 Financial assets that are individually determined to be impaired, fair value of collateral held and other credit enhancements Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsThatAreIndividuallyDeterminedToBeImpairedFairValueOfCollateralHeldAndOtherCreditEnhancements
4114 1267 - Disclosure - RISK MANAGEMENT (Details 30) Network

*

*

http://www.grupobancolombia.com/role/RiskManagementDetails30
4115 Statement [Table] Table

*

*

us-gaap:StatementTable
4116 Class of Stock [Axis] Axis us-gaap:StatementClassOfStockAxis
4117 Class of Stock [Domain] Member us-gaap:ClassOfStockDomain
4118 Macroeconomic Variation [Axis] Axis cib:MacroeconomicVariationAxis
4119 Macroeconomic Variation [Domain] Member cib:MacroeconomicVariationDomain
4120 One Percentage Increase In Fiscal Balance Current Account And Inflation [Member] Member cib:OnePercentageIncreaseInFiscalBalanceCurrentAccountAndInflationMember
4121 No Change In Fiscal Balance Current Account And Inflation [Member] Member cib:NoChangeInFiscalBalanceCurrentAccountAndInflationMember
4122 One Percentage Decrease In Fiscal Balance Current Account And Inflation [Member] Member cib:OnePercentageDecreaseInFiscalBalanceCurrentAccountAndInflationMember
4123 Statement [Line Items] LineItems us-gaap:StatementLineItems
4124 Decrease In Expected Credit Loss Due to One Percentage Increase in GDP Growth Rate Concept (Monetary) For Period Credit cib:DecreaseInExpectedCreditLossDueToOnePercentageIncreaseInGDPGrowthRate
4125 Increase Decrease In Expected Credit Loss When No Change in GDP Growth Rate Concept (Monetary) For Period Debit cib:IncreaseDecreaseInExpectedCreditLossWhenNoChangeInGDPGrowthRate
4126 Increase In Expected Credit Loss Due to One Percentage decrease in GDP Growth Rate Concept (Monetary) For Period Debit cib:IncreaseInExpectedCreditLossDueToOnePercentageDecreaseInGDPGrowthRate
4127 1268 - Disclosure - RISK MANAGEMENT (Details Textual) Network

*

*

http://www.grupobancolombia.com/role/RiskManagementDetailsTextual
4128 Schedule Of Risk Management [Table] Table

*

*

cib:ScheduleOfRiskManagementTable
4129 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
4130 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
4131 Economic group [Member] Member cib:EconomicGroupMember
4132 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
4133 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
4134 United states dollars [Member] Member cib:UnitedStatesDollarsMember
4135 Range [Axis] Axis ifrs-full:RangeAxis
4136 Ranges [member] Member ifrs-full:RangesMember
4137 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
4138 Risks [member] Member ifrs-full:TypesOfRisksMember
4139 Currency risk [member] Member ifrs-full:CurrencyRiskMember
4140 Scenario Type [Axis] Axis cib:ScenarioTypeAxis
4141 Scenario Type [Domain] Member cib:ScenarioTypeDomain
4142 Optimistic Scenario [Member] Member cib:OptimisticScenarioMember
4143 Pessimistic Scenario [Member] Member cib:PessimisticScenarioMember
4144 Risk Management [Line Items] LineItems cib:RiskManagementLineItems
4145 Repayment term Concept (Text/String) For Period cib:RepaymentTerm
4146 Transfer of loans and goods to foreclosed assets and inventories Concept (Monetary) For Period Debit cib:TransferOfLoansAndGoodsToForeclosedAssetsAndInventories
4147 Concentration of Number of economic groups Concept (Text/String) For Period cib:ConcentrationOfNumberOfEconomicGroups
4148 Credit exposure Concept (Monetary) As Of ifrs-full:CreditExposure
4149 Percentage of debt securities not in default Concept (Percent) For Period cib:PercentageOfDebtSecuritiesNotInDefault
4150 Percentage of derivatives not in default Concept (Percent) For Period cib:PercentageOfDerivativesNotInDefault
4151 Disclosure of term of exposure Concept (Text/String) For Period cib:DisclosureOfTermOfExposure
4152 Confidence level Concept (Percent) For Period cib:ConfidenceLevel
4153 Holding period Concept (Text/String) For Period cib:HoldingPeriod
4154 Time duration Concept (Text/String) For Period cib:TimeDuration
4155 Interest income sensitivity in basis points Concept (Text/String) For Period cib:InterestIncomeSensitivityInBasisPoints
4156 Net interest income sensitivity due to increase in basis points Concept (Monetary) For Period Credit cib:NetInterestIncomeSensitivityDueToIncreaseInBasisPoints
4157 Percentage of decrease in Market value of investments Concept (Percent) For Period cib:PercentageOfDecreaseInMarketValueOfInvestments
4158 Decrease in market value of investments Concept (Monetary) For Period Debit cib:DecreaseInMarketValueOfInvestments
4159 Market value of investments Concept (Monetary) As Of Debit cib:MarketValueOfInvestments
4160 Contractual maturities liabilities duration Concept (Text/String) For Period cib:ContractualMaturitiesLiabilitiesDuration
4161 Duration of contract maturity of mortgage loans Concept (Text/String) For Period cib:DurationOfContractMaturityOfMortgageLoans
4162 Percentage decrease in market value Concept (Percent) For Period cib:PercentageDecreaseInMarketValue
4163 Decrease in structural equity investments market value Concept (Monetary) For Period Debit cib:DecreaseInStructuralEquityInvestmentsMarketValue
4164 Structural equity investment market value Concept (Monetary) For Period Debit cib:StructuralEquityInvestmentMarketValue
4165 Percentage of increase in total market risk Concept (Percent) For Period cib:PercentageOfIncreaseInTotalMarketRisk
4166 Risk exposure associated with instruments sharing characteristic Concept (Monetary) As Of ifrs-full:RiskExposureAssociatedWithInstrumentsSharingCharacteristic
4167 Percentage of increase in net position of currency Concept (Percent) For Period cib:PercentageOfIncreaseInNetPositionOfCurrency
4168 Increase in Moderate Growth Rate of Loan Portfolio Concept (Percent) For Period cib:IncreaseInModerateGrowthRateOfLoanPortfolio
4169 Increase in 30-Day Past Due Loan Ratio Concept (Percent) For Period cib:IncreaseIn30dayPastDueLoanRatio
4170 Increase in Rate of Commercial Loans Concept (Percent) For Period cib:IncreaseInRateOfCommercialLoans
4171 Thirty Day Past Due Loan Ratio of Commercial Loans Concept (Percent) For Period cib:ThirtyDayPastDueLoanRatioOfCommercialLoans
4172 Increase in Rate of Consumer Loans Concept (Percent) For Period cib:IncreaseInRateOfConsumerLoans
4173 Thirty Day Past Due Loan Ratio of Consumer Loans Concept (Percent) For Period cib:ThirtyDayPastDueLoanRatioOfConsumerLoans
4174 Mortgage Loans Concept (Monetary) As Of Debit cib:MortgageLoans
4175 Increase in Rate of Mortgage Loans Concept (Percent) For Period cib:IncreaseInRateOfMortgageLoans
4176 Thirty Day Past Due Loan Ratio of Mortgage Loans Concept (Percent) For Period cib:ThirtyDayPastDueLoanRatioOfMortgageLoans
4177 Corporate loans Concept (Monetary) As Of Debit ifrs-full:CorporateLoans
4178 Consumer loans Concept (Monetary) As Of Debit ifrs-full:ConsumerLoans
4179 Small Business Loan Concept (Monetary) As Of Debit cib:SmallBusinessLoan
4180 Increase in Rate of Small Business Loans Concept (Percent) For Period cib:IncreaseInRateOfSmallBusinessLoans
4181 Thirty Day Past Due Loan Ratio of Small Business Loans Concept (Percent) For Period cib:ThirtyDayPastDueLoanRatioOfSmallBusinessLoans
4182 Description of estimated Impact of expected credit loss by applying the optimistic and pessimistic scenarios Concept (Text/String) For Period cib:DescriptionOfEstimatedImpactOfExpectedCreditLossByApplyingTheOptimisticAndPessimisticScenarios
4183 Increase Decrease In Expected Credit Loss Concept (Monetary) For Period Credit cib:IncreaseDecreaseInExpectedCreditLoss
4184 Capital Adequacy Requirements Description Concept (Text/String) For Period cib:CapitalAdequacyRequirementsDescription
4185 Financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
4186 Individually Impaired loan Concept (Monetary) For Period Credit cib:IndividuallyImpairedLoan
4187 1269 - Disclosure - IMPACTS ON APPLICATION OF NEW STANDARDS (Details) Network

*

*

http://www.grupobancolombia.com/role/ImpactsOnApplicationOfNewStandardsDetails
4188 Statement [Table] Table

*

*

us-gaap:StatementTable
4189 Class of Stock [Axis] Axis us-gaap:StatementClassOfStockAxis
4190 Class of Stock [Domain] Member us-gaap:ClassOfStockDomain
4191 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
4192 Currently stated [member] Member ifrs-full:RestatedMember
4193 Previously stated [member] Member ifrs-full:PreviouslyStatedMember
4194 Increase (decrease) due to changes in accounting policy [member] Member ifrs-full:FinancialEffectOfChangesInAccountingPolicyMember
4195 Increase (decrease) due to changes in accounting policy required by IFRSs [member] Member ifrs-full:IncreaseDecreaseDueToChangesInAccountingPolicyRequiredByIFRSsMember
4196 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
4197 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
4198 Financial assets at amortised cost, category [member] Member ifrs-full:FinancialAssetsAtAmortisedCostCategoryMember
4199 Financial assets at fair value through profit or loss, category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
4200 Financial assets at fair value through other comprehensive income, category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember
4201 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
4202 Assets [member] Member ifrs-full:ClassesOfAssetsMember
4203 Debt Securities [Member] Member ifrs-full:DebtSecuritiesMember
4204 Trading equity securities [member] Member ifrs-full:TradingEquitySecuritiesMember
4205 Debt Securities one [Member] Member cib:DebtSecurities1Member
4206 Debt Securities Two [Member] Member cib:DebtSecurities2Member
4207 Debt Securities Three [Member] Member cib:DebtSecurities3Member
4208 Derivatives [member] Member ifrs-full:DerivativesMember
4209 Loans and financial leases [Member] Member cib:LoansAndFinancialLeasesMember
4210 Trading Equity Securities One [Member] Member cib:TradingEquitySecuritiesOneMember
4211 Debt Securities Four [Member] Member cib:DebtSecurities4Member
4212 Effect of overlay approach reclassification [axis] Axis ifrs-full:EffectOfOverlayApproachReclassificationAxis
4213 In accordance with IFRS 9 [member] Member ifrs-full:InAccordanceWithIFRS9Member
4214 Accordance with IFRS 9 [Member] Member cib:AccordanceWithIFRS9Member
4215 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
4216 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
4217 Customer Deposits [Member] Member cib:CustomerDepositsMember
4218 Repos [Member] Member cib:ReposMember
4219 Inter bank [Member] Member cib:InterBankMember
4220 Other Liability [Member] Member cib:OtherLiabilityMember
4221 Financial liabilities [member] Member ifrs-full:FinancialLiabilitiesAtFairValueMember
4222 Statement [Line Items] LineItems us-gaap:StatementLineItems
4223 Type Of Original Classification Under IFRS 9 Concept (Text/String) For Period cib:TypeOfOriginalClassificationUnderIFRS9
4224 Type Of New Classification Under IFRS 9 Concept (Text/String) For Period cib:TypeOfNewClassificationUnderIFRS9
4225 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
4226 Financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
4227 Derivative financial assets Concept (Monetary) As Of Debit ifrs-full:DerivativeFinancialAssets
4228 Deposits from customers Concept (Monetary) As Of Credit ifrs-full:DepositsFromCustomers
4229 Deposits from banks Concept (Monetary) As Of Credit ifrs-full:DepositsFromBanks
4230 Repurchase agreements and cash collateral on securities lent Concept (Monetary) As Of Credit ifrs-full:RepurchaseAgreementsAndCashCollateralOnSecuritiesLent
4231 Derivative financial liabilities Concept (Monetary) As Of Credit ifrs-full:DerivativeFinancialLiabilities
4232 Current financial liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentFinancialLiabilities
4233 Other Liabilities Concept (Monetary) As Of Credit ifrs-full:OtherLiabilities
4234 Financial liabilities Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilities
4235 1270 - Disclosure - IMPACTS ON APPLICATION OF NEW STANDARDS (Details 1) Network

*

*

http://www.grupobancolombia.com/role/ImpactsOnApplicationOfNewStandardsDetails1
4236 Statement [Table] Table

*

*

us-gaap:StatementTable
4237 Class of Stock [Axis] Axis us-gaap:StatementClassOfStockAxis
4238 Class of Stock [Domain] Member us-gaap:ClassOfStockDomain
4239 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
4240 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
4241 Financial assets at fair value through profit or loss, category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
4242 Financial assets at amortised cost, category [member] Member ifrs-full:FinancialAssetsAtAmortisedCostCategoryMember
4243 Financial assets at fair value through other comprehensive income, category [member] Member ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember
4244 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
4245 Currently stated [member] Member ifrs-full:RestatedMember
4246 Previously stated [member] Member ifrs-full:PreviouslyStatedMember
4247 Increase (decrease) due to changes in accounting policy required by IFRSs [member] Member ifrs-full:IncreaseDecreaseDueToChangesInAccountingPolicyRequiredByIFRSsMember
4248 Events of reclassification of financial assets [axis] Axis ifrs-full:EventsOfReclassificationOfFinancialAssetsAxis
4249 Events of reclassification of financial assets [member] Member ifrs-full:EventsOfReclassificationOfFinancialAssetsMember
4250 Reclassification [Member] Member cib:ReclassificationMember
4251 Measurement [axis] Axis ifrs-full:MeasurementAxis
4252 Aggregated measurement [member] Member ifrs-full:AggregatedMeasurementMember
4253 Remeasurement [Member] Member cib:RemeasurementMember
4254 Statement [Line Items] LineItems us-gaap:StatementLineItems
4255 Beginning balance Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
4256 Reclassification of financial assets out of measured at fair value through profit or loss into measured at fair value through other comprehensive income Concept (Monetary) For Period ifrs-full:ReclassificationOfFinancialAssetsOutOfMeasuredAtFairValueThroughProfitOrLossIntoMeasuredAtFairValueThroughOtherComprehensiveIncome
4257 Reclassification of financial assets out of measured at fair value through profit or loss into measured at amortised cost Concept (Monetary) For Period ifrs-full:ReclassificationOfFinancialAssetsOutOfMeasuredAtFairValueIntoMeasuredAtAmortisedCost
4258 Fair value of financial assets reclassified out of fair value through profit or loss category into amortised cost or fair value through other comprehensive income category Concept (Monetary) As Of Debit ifrs-full:FairValueOfFinancialAssetsReclassifiedAsMeasuredAtAmortisedCost
4259 Reclassification of financial assets out of measured at fair value through other comprehensive income into measured at amortised cost Concept (Monetary) For Period ifrs-full:ReclassificationOfFinancialAssetsOutOfMeasuredAtFairValueThroughOtherComprehensiveIncomeIntoMeasuredAtAmortisedCost
4260 Reclassification of financial assets out of measured at fair value through other comprehensive income into measured at fair value through profit or loss Concept (Monetary) For Period ifrs-full:ReclassificationOfFinancialAssetsOutOfMeasuredAtFairValueThroughOtherComprehensiveIncomeIntoMeasuredAtFairValueThroughProfitOrLoss
4261 Fair value of financial assets reclassified out of fair value through other comprehensive income category into amortised cost category Concept (Monetary) As Of Debit ifrs-full:FairValueOfFinancialAssetsReclassifiedOutOfFairValueThroughOtherComprehensiveIncomeCategoryIntoAmortisedCostCategory
4262 Ending Balance Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
4263 1271 - Disclosure - IMPACTS ON APPLICATION OF NEW STANDARDS (Details 2) Network

*

*

http://www.grupobancolombia.com/role/ImpactsOnApplicationOfNewStandardsDetails2
4264 Statement [Table] Table

*

*

us-gaap:StatementTable
4265 Class of Stock [Axis] Axis us-gaap:StatementClassOfStockAxis
4266 Class of Stock [Domain] Member us-gaap:ClassOfStockDomain
4267 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
4268 Currently stated [member] Member ifrs-full:RestatedMember
4269 Previously stated [member] Member ifrs-full:PreviouslyStatedMember
4270 Remeasurement [Member] Member cib:RemeasurementMember
4271 Increase (decrease) due to changes in accounting policy required by IFRSs [member] Member ifrs-full:IncreaseDecreaseDueToChangesInAccountingPolicyRequiredByIFRSsMember
4272 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
4273 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
4274 Financial assets at amortised cost, category [member] Member ifrs-full:FinancialAssetsAtAmortisedCostCategoryMember
4275 Financial assets measured at fair value through other comprehensive income, category [member] Member ifrs-full:FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeCategoryMember
4276 Statement [Line Items] LineItems us-gaap:StatementLineItems
4277 Impairment loss on financial assets Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossOnFinancialAssets
4278 Other liabilities Concept (Monetary) As Of Credit ifrs-full:OtherLiabilities
4279 Total allowance for credit losses Concept (Monetary) As Of Credit cib:AllowanceForCreditLossesOnFinancialInstrumentsTotal
4280 1272 - Disclosure - IMPACTS ON APPLICATION OF NEW STANDARDS (Details 3) Network

*

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http://www.grupobancolombia.com/role/ImpactsOnApplicationOfNewStandardsDetails3
4281 Disclosure Of Impacts On Application Of New Standards [Table] Table

*

*

cib:DisclosureOfImpactsOnApplicationOfNewStandardsTable
4282 New IFRSs [axis] Axis ifrs-full:NewIFRSsAxis
4283 New IFRSs [member] Member ifrs-full:NewIFRSsMember
4284 IFRS 9 Update [Member] Member cib:IFRS9UpdateMember
4285 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
4286 Equity [Member] Member ifrs-full:EquityMember
4287 Non-controlling interests [member] Member ifrs-full:NoncontrollingInterestsMember
4288 Retained Earnings [Member] Member ifrs-full:RetainedEarningsMember
4289 Disclosure Of Impacts On Application Of New Standards [Line Items] LineItems cib:DisclosureOfImpactsOnApplicationOfNewStandardsLineItems
4290 Balance Concept (Monetary) As Of Credit ifrs-full:Equity
4291 Expected Credit Loss On Financial Assets Recognized debt instruments at FVOCI Concept (Monetary) For Period Debit cib:ExpectedCreditLossOnFinancialAssetsRecognizedDebtInstrumentsAtFVOCI
4292 Expected Credit Loss On Financial Assets Recognized Concept (Monetary) For Period Debit cib:ExpectedCreditLossOnFinancialAssetsRecognized
4293 Investment In Debt Instruments Reclassification Adjustment Concept (Monetary) For Period Credit cib:InvestmentInDebtInstrumentsReclassificationAdjustment
4294 Expected Credit Loss On Financial Assets Recognized loans and financial leases Concept (Monetary) For Period Debit cib:ExpectedCreditLossOnFinancialAssetsRecognizedLoansAndFinancialLeases
4295 Expected Credit Loss On Financial Assets Recognized Financial guarantees and loan commitments Concept (Monetary) For Period Credit cib:ExpectedCreditLossOnFinancialAssetsRecognizedFinancialGuaranteesAndLoanCommitments
4296 Modification Of Debt Recognized Concept (Monetary) For Period Debit cib:ModificationOfDebtRecognized
4297 Deferred tax relating to items credited (charged) directly to equity Concept (Monetary) For Period ifrs-full:DeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity
4298 Effect of adoption of new accounting standards (Note 32 Impacts on application of new standards) Concept (Monetary) For Period Credit cib:CumulativeEffectOfChangesInEquityDueToChangeInAccountingPolicy
4299 Shareholders' equity as of January 1, 2018 (adjusted) Concept (Monetary) As Of Credit ifrs-full:Equity
4300 1273 - Disclosure - IMPACTS ON APPLICATION OF NEW STANDARDS (Details Textual) Network

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http://www.grupobancolombia.com/role/ImpactsOnApplicationOfNewStandardsDetailsTextual
4301 Disclosure Of Impacts On Application Of New Standards [Table] Table

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cib:DisclosureOfImpactsOnApplicationOfNewStandardsTable
4302 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
4303 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
4304 Securities Issued By El Salvador Government [Member] Member cib:SecuritiesIssuedByElSalvadorGovernmentMember
4305 Securities Issued By Guatemala Government [Member] Member cib:SecuritiesIssuedByGuatemalaGovernmentMember
4306 Securities Issued By Republic of Panama [Member] Member cib:SecuritiesIssuedByRepublicOfPanamaMember
4307 Securities Issued By Republic of Panama Government [Member] Member cib:SecuritiesIssuedByRepublicOfPanamaGovernmentMember
4308 Corporate bonds [Member] Member cib:CorporateBondsMember
4309 Cash and Cash Equivalents [Axis] Axis us-gaap:CashAndCashEquivalentsAxis
4310 Cash and Cash Equivalents [Domain] Member us-gaap:RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember
4311 Certificate Of Deposit [Member] Member cib:CertificateOfDepositMember
4312 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
4313 Currently stated [member] Member ifrs-full:RestatedMember
4314 Increase (decrease) due to changes in accounting policy and corrections of prior period errors [member] Member ifrs-full:IncreaseDecreaseDueToChangesInAccountingPolicyAndCorrectionsOfPriorPeriodErrorsMember
4315 New IFRSs [axis] Axis ifrs-full:NewIFRSsAxis
4316 New IFRSs [member] Member ifrs-full:NewIFRSsMember
4317 Adoption Of IFRS 9 [Member] Member cib:AdoptionOfIFRS9Member
4318 Range [Axis] Axis ifrs-full:RangeAxis
4319 Ranges [member] Member ifrs-full:RangesMember
4320 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
4321 Top of range [member] Member ifrs-full:TopOfRangeMember
4322 Disclosure Of Impacts On Application Of New Standards [Line Items] LineItems cib:DisclosureOfImpactsOnApplicationOfNewStandardsLineItems
4323 Fair value of financial assets reclassified out of fair value through profit or loss and into fair value through other comprehensive income, initial application of IFRS 9 Concept (Monetary) As Of Debit ifrs-full:FairValueOfFinancialAssetsReclassifiedOutOfFairValueThroughProfitOrLossAndIntoFairValueThroughOtherComprehensiveIncomeInitialApplicationOfIFRS9
4324 Reclassification of financial assets out of measured at amortised cost into measured at fair value through other comprehensive income Concept (Monetary) For Period ifrs-full:ReclassificationOfFinancialAssetsOutOfMeasuredAtAmortisedCostIntoMeasuredAtFairValueThroughOtherComprehensiveIncome
4325 Reclassification of financial assets out of measured at amortised cost into measured at fair value through profit or loss Concept (Monetary) For Period ifrs-full:ReclassificationOfFinancialAssetsOutOfMeasuredAtAmortisedCostIntoMeasuredAtFairValue
4326 Liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
4327 Right-of-use assets Concept (Monetary) As Of Debit ifrs-full:RightofuseAssets
4328 Lease liabilities Concept (Monetary) As Of Credit ifrs-full:LeaseLiabilities
4329 Retained earnings Concept (Monetary) As Of Credit ifrs-full:RetainedEarnings
4330 Net deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:NetDeferredTaxLiabilities
4331 1274 - Disclosure - SUBSEQUENT EVENTS (Details Textual) Network

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http://www.grupobancolombia.com/role/SubsequentEventsDetailsTextual
4332 Disclosure of subsequent events [Table] Table

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cib:DisclosureOfSubsequentEventsTable
4333 Non-adjusting events after reporting period [axis] Axis ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
4334 Non-adjusting events after reporting period [member] Member ifrs-full:NonadjustingEventsMember
4335 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
4336 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
4337 Arval Relsa [Member] Member cib:ArvalRelsaMember
4338 Disclosure of subsequent events [Line Items] LineItems cib:DisclosureOfSubsequentEventsLineItems
4339 Issued capital Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
4340 Percentage of voting equity interests acquired Concept (Percent) As Of ifrs-full:PercentageOfVotingEquityInterestsAcquired

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