Woori Bank (SEC Filing Page | XBRL Cloud Viewer | XBRL Instance)

Line Label Object Class Period Type Balance Report ElementName
1 00001000 - Document - Document and Entity Information Network

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 http://www.wooribank.com/role/DocumentandEntityInformation
2 Implied Table Table

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3 Document and entity information [Abstract] Abstract wf:DocumentAndEntityInformationAbstract
4 Entity Registrant Name Concept (Text/String) For Period dei:EntityRegistrantName
5 Entity Central Index Key Concept (CIK Number) For Period dei:EntityCentralIndexKey
6 Document Type Concept (Submission Type) For Period dei:DocumentType
7 Document Period End Date Concept (Date) For Period dei:DocumentPeriodEndDate
8 Amendment Flag Concept (Yes/No) For Period dei:AmendmentFlag
9 Document Fiscal Year Focus Concept (Year) For Period dei:DocumentFiscalYearFocus
10 Document Fiscal Period Focus Concept (Fiscal Period) For Period dei:DocumentFiscalPeriodFocus
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 Entity Common Stock, Shares Outstanding Concept (Shares) As Of dei:EntityCommonStockSharesOutstanding
17 10010000 - Statement - Consolidated Statements Of Financial Position Network

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 http://www.wooribank.com/role/ConsolidatedStatementsOfFinancialPosition
18 Implied Table Table

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19 Statement of financial position [Abstract] Abstract ifrs-full:StatementOfFinancialPositionAbstract
20 ASSETS [Abstract] Abstract ifrs-full:AssetsAbstract
21 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
22 Financial assets at fair value through profit or loss Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLoss
23 Available-for-sale financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAvailableforsale
24 Held-to-maturity financial assets Concept (Monetary) As Of Debit ifrs-full:HeldtomaturityInvestments
25 Loans and receivables Concept (Monetary) As Of Debit ifrs-full:LoansAndReceivables
26 Investments in joint ventures and associates Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociatesAccountedForUsingEquityMethod
27 Investment properties Concept (Monetary) As Of Debit ifrs-full:InvestmentProperty
28 Premises and equipments Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
29 Intangible assets and goodwill Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
30 Assets held for sale Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale
31 Current tax assets Concept (Monetary) As Of Debit ifrs-full:CurrentTaxAssets
32 Deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
33 Derivative assets Concept (Monetary) As Of Debit ifrs-full:DerivativeFinancialAssets
34 Net defined benefit assets Concept (Monetary) As Of Debit wf:DefinedBenefitPlansAsset
35 Other assets Concept (Monetary) As Of Debit ifrs-full:OtherAssets
36 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
37 EQUITY and LIABILITIES [Abstract] Abstract ifrs-full:EquityAndLiabilitiesAbstract
38 LIABILITIES [Abstract] Abstract ifrs-full:LiabilitiesAbstract
39 Financial liabilities at fair value through profit or loss Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLoss
40 Deposits due to customers Concept (Monetary) As Of Credit ifrs-full:DepositsFromCustomers
41 Borrowings Concept (Monetary) As Of Credit ifrs-full:Borrowings
42 Debentures Concept (Monetary) As Of Credit ifrs-full:NotesAndDebenturesIssued
43 Provisions Concept (Monetary) As Of Credit ifrs-full:Provisions
44 Net defined benefit liability Concept (Monetary) As Of Credit wf:DefinedBenefitPlansLiability
45 Current tax liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentTaxLiabilities
46 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
47 Derivative liabilities Concept (Monetary) As Of Credit ifrs-full:DerivativeFinancialLiabilities
48 Other financial liabilities Concept (Monetary) As Of Credit ifrs-full:OtherFinancialLiabilities
49 Other liabilities Concept (Monetary) As Of Credit ifrs-full:OtherLiabilities
50 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
51 EQUITY [Abstract] Abstract ifrs-full:EquityAbstract
52 Owner's equity Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
53 Capital stock Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
54 Hybrid securities Concept (Monetary) As Of Credit wf:HybridSecuritiesOfOtherEquityInterest
55 Capital surplus Concept (Monetary) As Of Credit ifrs-full:CapitalReserve
56 Other equity Concept (Monetary) As Of Credit ifrs-full:OtherEquityInterest
57 Retained earnings Concept (Monetary) As Of Credit ifrs-full:RetainedEarnings
58 Non-controlling interests Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
59 Total equity Concept (Monetary) As Of Credit ifrs-full:Equity
60 Total liabilities and equity Concept (Monetary) As Of Credit ifrs-full:EquityAndLiabilities
61 10020000 - Statement - Consolidated Statements Of Comprehensive Income Network

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 http://www.wooribank.com/role/ConsolidatedStatementsOfComprehensiveIncome
62 Implied Table Table

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63 Statement of comprehensive income [Abstract] Abstract ifrs-full:StatementOfComprehensiveIncomeAbstract
64 Net interest income Concept (Monetary) For Period Credit ifrs-full:InterestRevenueExpense
65 Interest income Concept (Monetary) For Period Credit ifrs-full:RevenueFromInterest
66 Interest expense Concept (Monetary) For Period Debit ifrs-full:InterestExpense
67 Net fees and commissions income Concept (Monetary) For Period Credit ifrs-full:FeeAndCommissionIncomeExpense
68 Fees and commissions income Concept (Monetary) For Period Credit ifrs-full:FeeAndCommissionIncome
69 Fees and commissions expense Concept (Monetary) For Period Debit ifrs-full:FeeAndCommissionExpense
70 Dividend income Concept (Monetary) For Period Credit ifrs-full:RevenueFromDividends
71 Net gain (loss) on financial instruments at fair value through profit or loss Concept (Monetary) For Period Credit wf:GainLossOnFinancialAssetsLiabilitiesAtFairValueThroughProfitOrLoss
72 Net gain (loss) on available-for-sale financial assets Concept (Monetary) For Period Credit wf:GainLossOnAvailableForSaleFinancialAssets
73 Impairment losses due to credit loss Concept (Monetary) For Period Debit wf:ImpairmentLossesDueToCreditLoss
74 General and administrative expenses Concept (Monetary) For Period Debit ifrs-full:GeneralAndAdministrativeExpense
75 Net other operating expenses Concept (Monetary) For Period Credit ifrs-full:OtherOperatingIncomeExpense
76 Operating income Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
77 Share of losses of joint ventures and associates Concept (Monetary) For Period Credit wf:GainLossOnAssociatesAndJointVenturesAccountsUsingEquityMethod
78 Other net non-operating income (expense) Concept (Monetary) For Period Credit us-gaap:OtherNonoperatingIncomeExpense
79 Non-operating income (loss) Concept (Monetary) For Period Credit us-gaap:NonoperatingIncomeExpense
80 Net income before income tax expense Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
81 Income tax expense Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
82 Net income from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperations
83 Net income from discontinued operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromDiscontinuedOperations
84 Net income Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
85 Remeasurement of the net defined benefit liability Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
86 Items that will not be reclassified to profit or loss Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax
87 Gain (loss) on valuation of available-for-sale financial assets Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnRemeasuringAvailableforsaleFinancialAssetsNetOfTax
88 Share of other comprehensive income (loss) of joint ventures and associates Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillNotBeReclassifiedToProfitOrLossNetOfTax
89 Gain on foreign currencies translation of foreign operations Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation
90 Gain (loss) on valuation of cash flow hedge Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxCashFlowHedges
91 Equity related to assets held for sale Concept (Monetary) For Period Credit wf:OtherComprehensiveIncomeNetOfTaxEquityRelatedToNonCurrentAssetsHeldForSale
92 Items that may be reclassified to profit or loss Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax
93 Other comprehensive income(loss), net of tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
94 Total comprehensive income Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
95 Net income attributable to: Abstract ifrs-full:ProfitLossAttributableToAbstract
96 Net income attributable to owners Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOwnersOfParent
97 Income from continuing operations Concept (Monetary) For Period Credit ifrs-full:IncomeFromContinuingOperationsAttributableToOwnersOfParent
98 Income from discontinued operations Concept (Monetary) For Period Credit ifrs-full:IncomeFromDiscontinuedOperationsAttributableToOwnersOfParent
99 Net Income (loss) attributable to non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
100 Income from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperationsAttributableToNoncontrollingInterests
101 Loss from discontinued operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromDiscontinuedOperationsAttributableToNoncontrollingInterests
102 Total comprehensive income attributable to: Abstract ifrs-full:ComprehensiveIncomeAttributableToAbstract
103 Comprehensive income attributable to owners Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToOwnersOfParent
104 Comprehensive income (loss) attributable to non-controlling interests Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeAttributableToNoncontrollingInterests
105 Basic and diluted earnings from continuing and discontinued operations per share (Note 43)(Unit: Korean Won and U.S. Dollar) Concept (Share) For Period ifrs-full:BasicAndDilutedEarningsLossPerShare
106 Basic and diluted earnings from continuing operations per share (Note 43) (Unit: Korean Won and U.S. Dollar) Concept (Share) For Period ifrs-full:BasicAndDilutedEarningsLossPerShareFromContinuingOperations
107 10030000 - Statement - Consolidated Statements Of Changes In Equity Network

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 http://www.wooribank.com/role/ConsolidatedStatementsOfChangesInEquity
108 Statement of changes in equity [Table] Table

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 ifrs-full:StatementOfChangesInEquityTable
109 Components of equity [Axis] Axis ifrs-full:ComponentsOfEquityAxis
110 Total equity Member ifrs-full:EquityMember
111 Owner's equity Member ifrs-full:EquityAttributableToOwnersOfParentMember
112 Capital Stock Member ifrs-full:IssuedCapitalMember
113 Hybrid securities Member wf:HybridSecuritiesOfOtherEquityInterestMember
114 Capital surplus Member ifrs-full:SharePremiumMember
115 Other equity Member ifrs-full:OtherEquityInterestMember
116 Retained earnings Member ifrs-full:RetainedEarningsMember
117 Non-controlling interest Member ifrs-full:NoncontrollingInterestsMember
118 Statement of changes in equity [Line Items] LineItems ifrs-full:StatementOfChangesInEquityLineItems
119 Balance at beginnig Concept (Monetary) As Of Credit ifrs-full:Equity
120 Changes in equity [Abstract] Abstract ifrs-full:ChangesInEquityAbstract
121 Net income Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
122 Dividends Concept (Monetary) For Period Debit ifrs-full:DividendsPaid
123 Changes in capital surplus of consolidated subsidiaries Concept (Monetary) For Period Credit wf:ChangesInCapitalSurplusOfConsolidatedSubsidiaries
124 Changes in non-controlling interests due to acquisition of subsidiary Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughAcquisitionOfSubsidiary
125 Subsidiary capital increase Concept (Monetary) For Period Credit wf:SubsidiaryCapitalIncrease
126 Gain (loss) on valuation of available-for-sale financial assets Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnRemeasuringAvailableforsaleFinancialAssetsNetOfTax
127 Share of other comprehensive gain (loss) of joint ventures and associates Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
128 Gain on foreign currencies translation of foreign operations Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation
129 Remeasurement of the net defined benefit liability Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
130 Gain (loss) on valuation of cash flow hedge Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxCashFlowHedges
131 Equity related to assets held for sale Concept (Monetary) For Period Credit wf:OtherComprehensiveIncomeNetOfTaxEquityRelatedToNonCurrentAssetsHeldForSale
132 Dividends to hybrid securities Concept (Monetary) For Period Credit wf:DividendsToHybridSecurities
133 Issuance of hybrid securities Concept (Monetary) For Period Debit wf:IssuanceOfHybridSecurities
134 Redemption of hybrid securities Concept (Monetary) For Period Debit wf:RedemptionOfHybridSecurities
135 Change in ownership interest of investments in consolidated subsidiaries and others Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl
136 Appropriation of merger losses Concept (Monetary) For Period Debit wf:IncreaseDecreaseThroughAppropriationOfRetainedEarningsDueToMergerLoss
137 Retirement of treasury stock Concept (Monetary) For Period Credit ifrs-full:CancellationOfTreasuryShares
138 Balance at end Concept (Monetary) As Of Credit ifrs-full:Equity
139 Purchase of treasury shares Concept (Monetary) For Period Debit ifrs-full:PurchaseOfTreasuryShares
140 10040000 - Statement - Consolidated Statements Of Cash Flows Network

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 http://www.wooribank.com/role/ConsolidatedStatementsOfCashFlows
141 Implied Table Table

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142 Statement of cash flows [Abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
143 Cash flows from operating activities Abstract ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
144 Net income Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
145 Adjustments: Abstract ifrs-full:AdjustmentsForReconcileProfitLossAbstract
146 Income tax expense Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncomeTaxExpense
147 Interest income Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForInterestIncome
148 Interest expense Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForInterestExpense
149 Dividend income Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForDividendIncome
150 Impairment losses due to credit loss Concept (Monetary) For Period Debit wf:ImpairmentLossesDueToCreditLoss
151 Loss on valuation of financial instruments at fair value through profit or loss Concept (Monetary) For Period Debit wf:AdjustmentsForLossOnValuationOfFinancialInstrumentsAtFairValueThroughProfitOrLoss
152 Loss on available-for-sale financial assets Concept (Monetary) For Period Debit wf:AdjustmentsForLossOnAvailableforsaleFinancialAssets
153 Share of losses of investments in joint ventures and associates Concept (Monetary) For Period Debit wf:AdjustmentsForLossOnInvestmentOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
154 Loss on transaction of derivatives / valuation of derivatives Concept (Monetary) For Period Debit wf:AdjustmentsForLossOnTransactionAndValuationOfDerivatives
155 Loss on fair value hedged items Concept (Monetary) For Period Debit wf:AdjustmentsForLossOnFairValueHedgedItems
156 Provisions Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForProvisions
157 Retirement benefits Concept (Monetary) For Period Debit wf:AdjustmentsForPostemploymentBenefitExpense
158 Depreciation and amortization Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDepreciationAndAmortisationExpense
159 Loss on disposal of investments in joint ventures and associates Concept (Monetary) For Period Debit wf:AdjustmentsForLossOnDisposalOfInvestmentsInAssociatesAndJointVentures
160 Loss on disposal of premises and equipment and other assets Concept (Monetary) For Period Debit wf:AdjustmentsForLossOnDisposalOfPremisesAndEquipmentAndOtherAssets
161 Impairment loss on premises and equipment and other assets Concept (Monetary) For Period Debit us-gaap:OtherAssetImpairmentCharges
162 Gain on valuation of financial instruments at fair value through profit or loss Concept (Monetary) For Period Credit wf:AdjustmentsForGainOnValuationOfFinancialInstrumentsAtFairValueThroughProfitOrLoss
163 Gain on available-for-sale financial assets Concept (Monetary) For Period Credit wf:AdjustmentsForGainOnAvailableforsaleFinancialAssets
164 Share of profits of investments in joint ventures and associates Concept (Monetary) For Period Credit wf:AdjustmentsForGainOnInvestmentOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
165 Gain on transaction of derivatives / valuation of derivatives Concept (Monetary) For Period Credit wf:AdjustmentsForGainOnTransactionAndValuationOfDerivatives
166 Gain on fair value hedged items Concept (Monetary) For Period Credit wf:AdjustmentsForGainOnFairValueHedgedItems
167 Reversal of provisions Concept (Monetary) For Period Credit ifrs-full:OtherReversalsOfProvisions
168 Gain on disposal of investments in joint ventures and associates Concept (Monetary) For Period Credit wf:AdjustmentsForGainOnDisposalOfInvestmentsInAssociatesAndJointVentures
169 Gain on disposal of premises and equipment and other assets Concept (Monetary) For Period Credit wf:AdjustmentsForGainOnDisposalOfPremisesAndEquipmentAndOtherAssets
170 Reversal of impairment loss on premises and equipment and other assets Concept (Monetary) For Period Credit wf:AdjustmentsForReversalOfImpairmentLossOnPremisesAndEquipmentAndOtherAssets
171 Changes in operating assets and liabilities: Abstract us-gaap:IncreaseDecreaseInOperatingCapitalAbstract
172 Financial instruments at fair value through profit or loss Concept (Monetary) For Period Debit wf:AdjustmentsForDecreaseIncreaseInFinancialInstrumentsAtFairValueThroughProfitOrLoss
173 Loans and receivables Concept (Monetary) For Period Debit wf:AdjustmentsForDecreaseIncreaseInLoansAndReceivables
174 Other assets Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInOtherAssets
175 Deposits due to customers Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInDepositsFromCustomers
176 Provision for guarantee and loan commitment Concept (Monetary) For Period Credit ifrs-full:ChangesInOtherProvisions
177 Net defined benefit liability Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities
178 Other financial liabilities Concept (Monetary) For Period Credit wf:AdjustmentsForIncreaseDecreaseInOtherFinancialLiabilities
179 Other liabilities Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInOtherLiabilities
180 Cash received from (paid for) operating activities: Abstract ifrs-full:ClassesOfCashPaymentsAbstract
181 Interest income received Concept (Monetary) For Period Debit ifrs-full:InterestReceivedClassifiedAsOperatingActivities
182 Interest expense paid Concept (Monetary) For Period Credit ifrs-full:InterestPaidClassifiedAsOperatingActivities
183 Dividends received Concept (Monetary) For Period Debit ifrs-full:DividendsReceivedClassifiedAsOperatingActivities
184 Income tax paid Concept (Monetary) For Period Credit ifrs-full:IncomeTaxesPaidRefundClassifiedAsOperatingActivities
185 Net cash provided by (used in) operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
186 Cash flows from investing activities Abstract ifrs-full:CashFlowsFromUsedInInvestingActivitiesAbstract
187 Disposal of available-for-sale financial assets Concept (Monetary) For Period Debit ifrs-full:ProceedsFromDisposalOrMaturityOfAvailableforsaleFinancialAssets
188 Redemption of held-to-maturity financial assets Concept (Monetary) For Period Debit us-gaap:ProceedsFromSaleAndMaturityOfHeldToMaturitySecurities
189 Disposal of investments in joint ventures and associates Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfInterestsInAssociates
190 Disposal of subsidiaries Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfInvestmentsAccountedForUsingEquityMethod
191 Disposal of investment properties Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfInvestmentProperty
192 Disposal of premises and equipment Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
193 Disposal of intangible assets Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfIntangibleAssetsClassifiedAsInvestingActivities
194 Disposal of assets held for sale Concept (Monetary) For Period Debit ifrs-full:ProceedsFromDisposalOfNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleAndDiscontinuedOperations
195 Decrease of derivatives for hedging Concept (Monetary) For Period Debit us-gaap:ProceedsFromHedgeInvestingActivities
196 Net cash flows through business combination(Note 46) Concept (Monetary) For Period Credit ifrs-full:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
197 Acquisition of available-for-sale financial assets Concept (Monetary) For Period Credit ifrs-full:PurchaseOfAvailableforsaleFinancialAssets
198 Acquisition of held-to-maturity financial assets Concept (Monetary) For Period Credit us-gaap:PaymentsToAcquireHeldToMaturitySecurities
199 Acquisition of investments in joint ventures and associates Concept (Monetary) For Period Credit ifrs-full:PurchaseOfInterestsInAssociates
200 Acquisition of investment properties Concept (Monetary) For Period Credit ifrs-full:PurchaseOfInvestmentProperty
201 Acquisition of premises and equipment Concept (Monetary) For Period Credit ifrs-full:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
202 Acquisition of intangible assets Concept (Monetary) For Period Credit ifrs-full:PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities
203 Increase of derivatives for hedging Concept (Monetary) For Period Credit us-gaap:PaymentsForHedgeInvestingActivities
204 Net cash provided by (used in) investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
205 Cash flows from financing activities Abstract ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract
206 Increase in borrowings Concept (Monetary) For Period Debit ifrs-full:ProceedsFromBorrowingsClassifiedAsFinancingActivities
207 Issuance of debentures Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssueOfBondsNotesAndDebentures
208 Issuance of hybrid securities Concept (Monetary) For Period Debit wf:IssuanceOfHybridSecurities
209 Capital increase of subsidiaries Concept (Monetary) For Period Debit wf:ProceedsFromCapitalIncreaseOfSubsidiaries
210 Increase of paid in capital in subsidiaries Concept (Monetary) For Period Debit ifrs-full:ProceedsFromChangesInOwnershipInterestsInSubsidiaries
211 Decrease in borrowings Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfBorrowingsClassifiedAsFinancingActivities
212 Repayment of debentures Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfBondsNotesAndDebentures
213 Dividends paid Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToEquityHoldersOfParentClassifiedAsFinancingActivities
214 Dividends paid on hybrid securities Concept (Monetary) For Period Credit wf:DividendsPaidOnHybridSecurities
215 Repayment of hybrid securities Concept (Monetary) For Period Credit wf:RepaymentOfHybridSecurities
216 Dividends paid on non-controlling interests Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities
217 Net cash provided by (used in) financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
218 Net increase (decrease) in cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
219 Cash and cash equivalents, beginning of the period Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
220 Effects of exchange rate changes on cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
221 Cash and cash equivalents, end of the period (Note 6) Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
222 21010101 - Disclosure - General Network

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223 Implied Table Table

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224 Disclosure of notes and other explanatory information [Abstract] Abstract wf:DisclosureOfNotesAndOtherExplanatoryInformationAbstract
225 General Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNotesAndOtherExplanatoryInformationExplanatory
226 21020101 - Disclosure - Significant Basis of Preparation and Accounting Policies Network

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227 Implied Table Table

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228 Accounting policies [Abstract] Abstract us-gaap:AccountingPoliciesAbstract
229 Significant Basis Of Preparation And Accounting Policies Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSummaryOfSignificantAccountingPoliciesExplanatory
230 21030101 - Disclosure - Significant accounting estimates and assumptions Network

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231 Implied Table Table

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232 Disclosure of accounting judgements and estimates [Abstract] Abstract wf:DisclosureOfAccountingJudgementsAndEstimatesAbstract
233 Significant Accounting Estimates And Assumptions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAccountingJudgementsAndEstimatesExplanatory
234 21040101 - Disclosure - Risk Management Network

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235 Implied Table Table

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236 Disclosure of risk management [Abstract] Abstract wf:DisclosureOfRiskManagementAbstract
237 Disclosure of risk management [Text block] Concept (Text Block (HTML)) For Period wf:DisclosureOfRiskManagementExplanatory
238 21050101 - Disclosure - Operating Segments Network

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239 Implied Table Table

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240 Disclosure of operating segments [Abstract] Abstract ifrs-full:DisclosureOfOperatingSegmentsAbstract
241 Operating Segments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory
242 21060101 - Disclosure - Cash and cash equivalents Network

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243 Implied Table Table

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244 Cash and cash equivalents [Abstract] Abstract ifrs-full:CashAndCashEquivalentsAbstract
245 Cash And Cash Equivalents Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCashAndCashEquivalentsExplanatory
246 21070101 - Disclosure - Financial Assets at Fair Value through Profit or Loss Network

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247 Implied Table Table

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248 Financial assets at fair value through profit or loss [Abstract] Abstract ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossAbstract
249 Disclosure of financial assets at fair value through profit or loss [Text block] Concept (Text Block (HTML)) For Period wf:DisclosureOfFinancialAssetsAtFairValueThroughProfitOrLossExplanatory
250 21080101 - Disclosure - Available for sale financial assets Network

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251 Implied Table Table

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252 Available-for-sale Financial Assets [Abstract] Abstract ifrs-full:AvailableforsaleFinancialAssetsAbstract
253 Available For Sale Financial Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAvailableforsaleAssetsExplanatory
254 21090101 - Disclosure - Held to maturity financial assets Network

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255 Implied Table Table

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256 Disclosure of held-to-maturity financial assets [Abstract] Abstract wf:DisclosureOfHeldToMaturityFinancialAssetsAbstract
257 Held-To-Maturity Financial Assets Concept (Text Block (HTML)) For Period us-gaap:HeldToMaturitySecuritiesTextBlock
258 21100101 - Disclosure - Loans and receivables Network

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259 Implied Table Table

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260 Disclosure Of Loans And Receivables [Abstract] Abstract wf:DisclosureOfLoansAndReceivablesAbstract
261 Loans And Receivables Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfLoansAndAdvancesToBanksExplanatory
262 21110101 - Disclosure - Fair value of financial assets and liabilities Network

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263 Implied Table Table

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264 Disclosure Of Fair Value Measurement [Abstract] Abstract wf:DisclosureOfFairValueMeasurementAbstract
265 The Fair Value Of Financial Assets And Liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueMeasurementExplanatory
266 21120101 - Disclosure - Derecognition and offset of financial instruments Network

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267 Implied Table Table

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268 Disclosure of derecognition and offsetting of financial assets and liabilities [Abstract] Abstract wf:DisclosureOfDerecognitionAndOffsettingOfFinancialAssetsAndLiabilitiesAbstract
269 Disclosure of derecognition and offsetting of financial assets and liabilities [Text block] Concept (Text Block (HTML)) For Period wf:DisclosureOfDerecognitionAndOffsettingOfFinancialAssetsAndLiabilitiesExplanatory
270 21130101 - Disclosure - Investment in Joint Ventures and Associates Network

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 http://www.wooribank.com/role/InvestmentinJointVenturesandAssociates
271 Implied Table Table

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272 Equity Method Investments And Joint Ventures [Abstract] Abstract us-gaap:EquityMethodInvestmentsAndJointVenturesAbstract
273 Investment In Joint Ventures And Associates Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInvestmentsAccountedForUsingEquityMethodExplanatory
274 21140101 - Disclosure - Investment Properties Network

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275 Implied Table Table

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276 Disclosure Of Investment Property [Abstract] Abstract ifrs-full:DisclosureOfInvestmentPropertyAbstract
277 Investment Properties Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInvestmentPropertyExplanatory
278 21150101 - Disclosure - Premises and Equipment Network

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279 Implied Table Table

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280 Disclosure Of Property Plant And Equipment [Abstract] Abstract ifrs-full:DisclosureOfPropertyPlantAndEquipmentAbstract
281 Premises And Equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory
282 21160101 - Disclosure - Intangible Assets and Goodwill Network

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283 Implied Table Table

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284 Disclosure Of Intangible Assets [Abstract] Abstract ifrs-full:DisclosureOfIntangibleAssetsAbstract
285 Intangible Assets And Goodwill Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIntangibleAssetsAndGoodwillExplanatory
286 21170101 - Disclosure - Assets Held for sale Network

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287 Implied Table Table

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288 Non-current assets or disposal groups classified as held for sale or as held for distribution to owners [Abstract] Abstract ifrs-full:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwnersAbstract
289 Assets Held for Sale Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleExplanatory
290 21180101 - Disclosure - Assets Subject to Lien and Assets Acquired Through Foreclosures Network

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 http://www.wooribank.com/role/AssetsSubjecttoLienandAssetsAcquiredThroughForeclosures
291 Implied Table Table

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292 Disclosure Of Collateral [Abstract] Abstract wf:DisclosureOfCollateralAbstract
293 Assets Subject To Lien And Assets Acquired Through Foreclosures Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCollateralExplanatory
294 21190101 - Disclosure - Other Assets Network

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295 Implied Table Table

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296 Miscellaneous assets [Abstract] Abstract ifrs-full:MiscellaneousAssetsAbstract
297 Other Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherAssetsExplanatory
298 21200101 - Disclosure - Financial Liabilitiy at Fair Value Through Profit or Loss Network

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*

 http://www.wooribank.com/role/FinancialLiabilitiyatFairValueThroughProfitorLoss
299 Implied Table Table

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300 Financial liabilities at fair value through profit or loss [Abstract] Abstract ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossAbstract
301 Disclosure of financial liabilities at fair value through profit or loss [Text block] Concept (Text Block (HTML)) For Period wf:DisclosureOfFinancialLiabilitiesAtFairValueThroughProfitOrLossExplanatory
302 21210101 - Disclosure - Deposits Due to Customers Network

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303 Implied Table Table

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304 Deposits from customers [Abstract] Abstract ifrs-full:DepositsFromCustomersAbstract
305 Deposits Due To Customers Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDepositsFromCustomersExplanatory
306 21220101 - Disclosure - Borrowings and Debentures Network

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307 Implied Table Table

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308 Borrowings [Abstract] Abstract ifrs-full:BorrowingsAbstract
309 Borrowings And Debentures Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBorrowingsExplanatory
310 21230101 - Disclosure - Provisions Network

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311 Implied Table Table

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312 Provisions [Abstract] Abstract ifrs-full:ProvisionsAbstract
313 Provisions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfProvisionsExplanatory
314 21240101 - Disclosure - Net Defined Benefits Liability (Asset) Network

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315 Implied Table Table

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316 Disclosure of defined benefit plans [Abstract] Abstract ifrs-full:DisclosureOfDefinedBenefitPlansAbstract
317 Net Defined Benefits Liability (Asset) Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDefinedBenefitPlansExplanatory
318 21250101 - Disclosure - Other Financial Liabilities and Other Liabilities Network

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319 Implied Table Table

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320 Miscellaneous Liabilities [Abstract] Abstract ifrs-full:MiscellaneousLiabilitiesAbstract
321 Disclosure of other financial liabilities and other liabilities [Text block] Concept (Text Block (HTML)) For Period wf:DisclosureOfOtherFinancialLiabilitiesAndOtherLiabilitiesExplanatory
322 21260101 - Disclosure - Derivatives Network

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323 Implied Table Table

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324 Disclosure of detailed information about hedges [Abstract] Abstract ifrs-full:DisclosureOfHedgeAccountingAbstract
325 Derivatives Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDerivativeFinancialInstrumentsExplanatory
326 21270101 - Disclosure - Deferred Day 1 Profit or Loss Network

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327 Implied Table Table

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328 Disclosure Of Day One Profit Or Loss [Abstract] Abstract wf:DisclosureOfDayOneProfitOrLossAbstract
329 Disclosure of day one profit or loss [Text block] Concept (Text Block (HTML)) For Period wf:DisclosureODayOneProfitOrLossExplanatory
330 21280101 - Disclosure - Capital Stock and Capital Surplus Network

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331 Implied Table Table

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332 Disclosure Of Issued Capital And Miscellaneous Equity [Abstract] Abstract wf:DisclosureOfIssuedCapitalAndMiscellaneousEquityAbstract
333 Disclosure of issued capital and miscellaneous equity [Text block] Concept (Text Block (HTML)) For Period wf:DisclosureOfIssuedCapitalAndMiscellaneousEquityExplanatory
334 21290101 - Disclosure - Hybrid Securities Network

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335 Implied Table Table

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336 Hybrid Instruments [Abstract] Abstract us-gaap:HybridInstrumentsAbstract
337 Disclosure Of Hybrid Securities Explanatory Concept (Text Block (HTML)) For Period wf:DisclosureOfHybridSecuritiesExplanatory
338 21300101 - Disclosure - Other Equity Network

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 http://www.wooribank.com/role/OtherEquity
339 Implied Table Table

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340 Disclosure Of Other Equity [Abstract] Abstract wf:DisclosureOfOtherEquityAbstract
341 Disclosure of other equity [Text block] Concept (Text Block (HTML)) For Period wf:DisclosureOfOtherEquityExplanatory
342 21310101 - Disclosure - Retained Earnings Network

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343 Implied Table Table

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344 Retained Earnings Note Disclosure [Abstract] Abstract us-gaap:RetainedEarningsNoteDisclosureAbstract
345 Disclosure of retained earnings accumulated deficit [Text block] Concept (Text Block (HTML)) For Period wf:DisclosureOfRetainedEarningsAccumulatedDeficitExplanatory
346 21320101 - Disclosure - Regulatory Reserve for Credit Loss Network

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347 Implied Table Table

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348 Disclosure Of Regulatory Capital Requirements Under Regulation On Supervision Of Banking Business [Abstract] Abstract wf:DisclosureOfRegulatoryCapitalRequirementsUnderRegulationOnSupervisionOfBankingBusinessAbstract
349 Disclosure of regulatory capital requirements under regulation on supervision of banking business [Text block] Concept (Text Block (HTML)) For Period wf:DisclosureOfRegulatoryCapitalRequirementsUnderRegulationOnSupervisionOfBankingBusinessExplanatory
350 21330101 - Disclosure - Dividends Network

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351 Implied Table Table

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352 Dividends [Abstract] Abstract us-gaap:DividendsAbstract
353 Dividends Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDividendsExplanatory
354 21340101 - Disclosure - Net Interest Income Network

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355 Implied Table Table

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356 Interest Revenue (Expense), Net [Abstract] Abstract us-gaap:InterestRevenueOrExpenseNetAbstract
357 Disclosure of interest income (expense) Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestIncomeExpenseExplanatory
358 21350101 - Disclosure - Net Fees and Commissions Income Network

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359 Implied Table Table

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360 Fee and commission income (expense) [Abstract] Abstract ifrs-full:FeeAndCommissionIncomeExpenseAbstract
361 Net Fees And Commissions Income Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFeeAndCommissionIncomeExpenseExplanatory
362 21360101 - Disclosure - Dividend Income Network

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363 Implied Table Table

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364 Disclosure Of Revenue From Dividends [Abstract] Abstract wf:DisclosureOfRevenueFromDividendsAbstract
365 Disclosure of revenue from dividends [Text block] Concept (Text Block (HTML)) For Period wf:DisclosureOfRevenueFromDividendsExplanatory
366 21370101 - Disclosure - Gains (Losses) on Financial Assets at Fair Value Through Profit or Loss Network

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367 Implied Table Table

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368 Disclosure Of Gains Losses On Financial Instruments At Fair Value Through Profit Or Loss [Abstract] Abstract wf:DisclosureOfGainsLossesOnFinancialInstrumentsAtFairValueThroughProfitOrLossAbstract
369 Disclosure of gains losses on financial instruments at fair value through profit or loss [Text block] Concept (Text Block (HTML)) For Period wf:DisclosureOfGainsLossesOnFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory
370 21380101 - Disclosure - Net Loss on Available For Sale Financial Assets Network

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 http://www.wooribank.com/role/NetLossonAvailableForSaleFinancialAssets
371 Implied Table Table

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372 Disclosure Of Gains Losses On Available-for-sale Securities [Abstract] Abstract wf:DisclosureOfGainsLossesOnAvailableForSaleSecuritiesAbstract
373 Disclosure of gains losses on available-for-sale financial assets [Text block] Concept (Text Block (HTML)) For Period wf:DisclosureOfGainsLossesOnAvailableforsaleFinancialAssetsExplanatory
374 21390101 - Disclosure - Impairment Losses Due to Credit Loss Network

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 http://www.wooribank.com/role/ImpairmentLossesDuetoCreditLoss
375 Implied Table Table

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376 Disclosure of impairment loss and reversal of impairment loss [Abstract] Abstract ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossAbstract
377 Impairment Losses Due To Credit Loss Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossExplanatory
378 21400101 - Disclosure - General, Administrative, and Other Net Operating Incomes (Expenses) Network

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 http://www.wooribank.com/role/GeneralAdministrativeandOtherNetOperatingIncomes(Expenses)
379 Implied Table Table

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380 Disclosure Of General And Administrative Expense And Other Net Operating Income Expense [Abstract] Abstract wf:DisclosureOfGeneralAndAdministrativeExpenseAndOtherNetOperatingIncomeExpenseAbstract
381 Disclosure of general and administrative expense and other net operating income expense [Text block] Concept (Text Block (HTML)) For Period wf:DisclosureOfGeneralAndAdministrativeExpenseAndOtherNetOperatingIncomeExpenseExplanatory
382 21410101 - Disclosure - Other Net Non Operating Income Network

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383 Implied Table Table

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384 Other Nonoperating Income (Expense) [Abstract] Abstract us-gaap:OtherNonoperatingIncomeExpenseAbstract
385 Other Net Non Operating Income Concept (Text Block (HTML)) For Period us-gaap:OtherNonoperatingIncomeAndExpenseTextBlock
386 21420101 - Disclosure - Income Tax Expense Network

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387 Implied Table Table

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388 Major components of tax expense (income) [Abstract] Abstract ifrs-full:MajorComponentsOfTaxExpenseIncomeAbstract
389 Income Tax Expense Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIncomeTaxExplanatory
390 21430101 - Disclosure - Earnings per Share (EPS) Network

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391 Implied Table Table

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392 Earnings per share [Abstract] Abstract ifrs-full:EarningsPerShareAbstract
393 Earnings Per Share (Eps) Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEarningsPerShareExplanatory
394 21440101 - Disclosure - Contingent Liabilities and Commitments Network

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395 Implied Table Table

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396 Disclosure of contingent liabilities [Abstract] Abstract ifrs-full:DisclosureOfContingentLiabilitiesAbstract
397 Contingent Liabilities And Commitments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory
398 21450101 - Disclosure - Related Party Transactions Network

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399 Implied Table Table

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400 Disclosure of transactions between related parties [Abstract] Abstract ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesAbstract
401 Related Party Transactions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRelatedPartyExplanatory
402 21460101 - Disclosure - Business Combination Network

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403 Implied Table Table

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404 Disclosure of detailed information about business combination [Abstract] Abstract ifrs-full:DisclosureOfBusinessCombinationsAbstract
405 Business Combination Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBusinessCombinationsExplanatory
406 21470101 - Disclosure - Subsequent Event Network

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407 Implied Table Table

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408 Disclosure of non-adjusting events after reporting period [Abstract] Abstract ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodAbstract
409 Subsequent Event Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEventsAfterReportingPeriodExplanatory
410 22020101 - Disclosure - Significant Basis of Preparation and Accounting Policies (Policies) Network

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 http://www.wooribank.com/role/SignificantBasisOfPreparationAndAccountingPoliciesPolicies
411 Implied Table Table

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412 Accounting policies [Abstract] Abstract us-gaap:AccountingPoliciesAbstract
413 Basis of presentation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory
414 Basis of consolidated financial statement presentation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBasisOfConsolidationExplanatory
415 Business combinations Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForBusinessCombinationsExplanatory
416 Investments in joint ventures and associates Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForInvestmentInAssociatesAndJointVenturesExplanatory
417 Investment in joint operation Concept (Text Block (HTML)) For Period wf:DescriptionOfAccountingPolicyForInvestmentInJointOperationExplanatory
418 Revenue recognition Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForRecognitionOfRevenue
419 Accounting for foreign currencies Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory
420 Cash and cash equivalents Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents
421 Financial assets and financial liabilities Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory
422 Offsetting financial instruments Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForOffsettingOfFinancialInstrumentsExplanatory
423 Investment properties Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForInvestmentPropertyExplanatory
424 Premises and equipment Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory
425 Intangible assets and goodwill Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIntangibleAssetsAndGoodwillExplanatory
426 Impairment of non-monetary assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory
427 Leases Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForLeasesExplanatory
428 Derivative instruments Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsAndHedgingExplanatory
429 Assets (or Disposal group) held for sale Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleExplanatory
430 Provisions Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForProvisionsExplanatory
431 Capital and compound financial instruments Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIssuedCapitalExplanatory
432 Financial guarantee contracts Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinancialGuaranteesExplanatory
433 Employee benefits and pensions Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory
434 Income taxes Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIncomeTaxExplanatory
435 Earnings per share Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEarningsPerShareExplanatory
436 22030101 - Disclosure - Significant accounting estimates and assumptions (Policies) Network

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437 Implied Table Table

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438 Disclosure Of Accounting Judgements And Estimates Explanatory [Abstract] Abstract wf:DisclosureOfAccountingJudgementsAndEstimatesExplanatoryAbstract
439 Description of accounting policy for estimates and assumptions on income taxes [Text block] Concept (Text Block (HTML)) For Period wf:DescriptionOfAccountingPolicyForEstimatesAndAssumptionsOnIncomeTaxesExplanatory
440 Description of accounting policy for estimates and assumptions on valuation of financial instruments [Text block] Concept (Text Block (HTML)) For Period wf:DescriptionOfAccountingPolicyForEstimatesAndAssumptionsOnValuationOfFinancialInstrumentsExplanatory
441 Description of accounting policy for estimates and assumptions on impairment of loans and receivables [Text block] Concept (Text Block (HTML)) For Period wf:DescriptionOfAccountingPolicyForEstimatesAndAssumptionsOnImpairmentOfLoansAndReceivablesExplanatory
442 Description of accounting policy for estimates and assumptions on defined benefit plan [Text block] Concept (Text Block (HTML)) For Period wf:DescriptionOfAccountingPolicyForEstimatesAndAssumptionsOnDefinedBenefitPlanExplanatory
443 23010101 - Disclosure - General (Tables) Network

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444 Implied Table Table

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445 Organization, Consolidation and Presentation of Financial Statements [Abstract] Abstract us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
446 Consolidated subsidiaries Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestsInSubsidiariesExplanatory
447 Unconsolidated companies with more than 50 Percent ownership interests Concept (Text Block (HTML)) For Period wf:DisclosureOfUnconsolidatedCompaniesWithMoreThanFiftyPercentOfOwnershipInterestsTableTextBlock
448 Condensed financial information of significant investments in subsidiaries Concept (Text Block (HTML)) For Period wf:DisclosureOfCondensedFinancialInformationOfSignificantInvestmentsInSubsidiariesTableTextBlock
449 Financial informations Maximum exposure and Loss recognised of unconsolidated structured entities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfUnconsolidatedStructuredEntitiesExplanatory
450 Non-controlling interests Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNoncontrollingInterestsExplanatory
451 23020101 - Disclosure - Significant Basis of Preparation and Accounting Policies (Tables) Network

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452 Implied Table Table

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453 Accounting policies [Abstract] Abstract us-gaap:AccountingPoliciesAbstract
454 K-IFRS 1109 estimated impact of adopting K-IFRS 1109 Concept (Text Block (HTML)) For Period wf:DisclosureOfTheEstimatedImpactOnTheClassificationAndMeasurementOfFinancialAssetsTableTextBlock
455 K-IFRS 1109 Expected Impact on the allowance for credit losses of adopting K-IFRS 1109 Concept (Text Block (HTML)) For Period wf:DisclosureOfTheExpectedImpactOnTheAllowanceForCreditLossesTableTextBlock
456 Estimated economic useful lives for premises and equipment except for land Concept (Text Block (HTML)) For Period wf:ScheduleOfPropertyPlantAndEquipmentUsefulLifeTableTextBlock
457 Estimated useful life for intangible assets Concept (Text Block (HTML)) For Period wf:ScheduleOfIntangibleAssetsUsefulLifeTableTextBlock
458 23040101 - Disclosure - Risk Management (Tables) Network

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459 Implied Table Table

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460 Disclosure of risk management [Abstract] Abstract wf:DisclosureOfRiskManagementAbstract
461 Maximum exposure to credit risk Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCreditRiskExplanatory
462 Credit risk exposure by geographical areas [Table Text Block] Concept (Text Block (HTML)) For Period wf:CreditRiskExposureByGeographicalAreasTableTextBlock
463 Credit risk exposure by industries [Table Text Block] Concept (Text Block (HTML)) For Period wf:CreditRiskExposureByIndustriesTableTextBlock
464 Schedule of loan portfolio [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfLoanPortfolioTableTextBlock
465 Analysis of credit quality of neither past due nor impaired loans and receivables using internal credit grading system [Table Text Block] Concept (Text Block (HTML)) For Period wf:AnalysisOfCreditQualityOfNeitherPastDueNorImpairedLoansAndReceivablesUsingInternalCreditGradingSystemTableTextBlock
466 Aging analysis of loans and receivables pastdue but not impaired net of allowance Concept (Text Block (HTML)) For Period ifrs-full:AnalysisOfAgeOfFinancialAssetsThatArePastDueButNotImpaired
467 Aging analysis of loans and receivables pastdue and impaired net of allowance Concept (Text Block (HTML)) For Period ifrs-full:AnalysisOfFinancialAssetsThatAreIndividuallyDeterminedToBeImpaired
468 Credit quality indicators related to securities [Table Text Block] Concept (Text Block (HTML)) For Period wf:CreditQualityIndicatorsRelatedToSecuritiesTableTextBlock
469 Schedule of va r by subsidiary [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfVaRBySubsidiaryTableTextBlock
470 Net interest income and net portfolio value analysis according to interest changing scenario for assets and liabilities held by the bank [Table Text Block] Concept (Text Block (HTML)) For Period wf:NetInterestIncomeAndNetPortfolioValueAnalysisAccordingToInterestChangingScenarioForAssetsAndLiabilitiesHeldByTheBankTableTextBlock
471 Interest earning at risk and interest value at risk based on bis framework for subsidiaries other than bank [Table Text Block] Concept (Text Block (HTML)) For Period wf:InterestEarningAtRiskAndInterestValueAtRiskBasedOnBisFrameworkForSubsidiariesOtherThanBankTableTextBlock
472 Cash flows of principal amounts and interests from interest bearing assets and liabilities by re-pricing date [Table Text Block] Concept (Text Block (HTML)) For Period wf:CashFlowsOfPrincipalAmountsAndInterestsFromInterestBearingAssetsAndLiabilitiesByRePricingDateTableTextBlock
473 Foreign currency risk exposure of financial instruments in foreign currency Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEffectOfChangesInForeignExchangeRatesExplanatory
474 Cash flow from principal and interest payments of non derivative financial liabilities by remaining contractual maturities [Table Text Block] Concept (Text Block (HTML)) For Period wf:CashFlowFromPrincipalAndInterestPaymentsOfNonDerivativeFinancialLiabilitiesByRemainingContractualMaturitiesTableTextBlock
475 Cash flow from principal and interest payments of non derivative financial liabilities by estimated redemption or withdrawal [Table Text Block] Concept (Text Block (HTML)) For Period wf:CashFlowFromPrincipalAndInterestPaymentsOfNonDerivativeFinancialLiabilitiesByEstimatedRedemptionOrWithdrawalTableTextBlock
476 Cash flow of derivative financial liabilities by maturities [Table Text Block] Concept (Text Block (HTML)) For Period wf:CashFlowOfDerivativeFinancialLiabilitiesByMaturitiesTableTextBlock
477 Maturity analysis of off balance accounts [Table Text Block] Concept (Text Block (HTML)) For Period wf:MaturityAnalysisOfOffBalanceAccountsTableTextBlock
478 Capital Ratio Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory
479 23050101 - Disclosure - Operating Segments (Tables) Network

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480 Implied Table Table

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481 Disclosure of operating segments [Abstract] Abstract ifrs-full:DisclosureOfOperatingSegmentsAbstract
482 Reconciliation of assets and liabilities from segment to consolidated [Table Text Block] Concept (Text Block (HTML)) For Period wf:ReconciliationOfAssetsAndLiabilitiesFromSegmentToConsolidatedTableTextBlock
483 Reconciliation of Operating Profit (Loss) from Segments to Consolidated Concept (Text Block (HTML)) For Period us-gaap:ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTextBlock
484 23060101 - Disclosure - Cash and cash equivalents (Tables) Network

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485 Implied Table Table

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486 Cash and cash equivalents [Abstract] Abstract ifrs-full:CashAndCashEquivalentsAbstract
487 Schedule of Cash and Cash Equivalents Concept (Text Block (HTML)) For Period us-gaap:ScheduleOfCashAndCashEquivalentsTableTextBlock
488 Schedule of Other Significant Noncash Transactions Concept (Text Block (HTML)) For Period us-gaap:ScheduleOfOtherSignificantNoncashTransactionsTextBlock
489 Liability adjustments from financing activities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesExplanatory
490 23070101 - Disclosure - Financial Assets at Fair Value through Profit or Loss (Tables) Network

*

*

 http://www.wooribank.com/role/FinancialAssetsatFairValuethroughProfitorLossTables
491 Implied Table Table

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 implied:Table
492 Financial assets at fair value through profit or loss [Abstract] Abstract ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossAbstract
493 Description of accounting policy for intangible assets and goodwill Concept (Text Block (HTML)) For Period wf:ScheduleOfFinancialAssetsAtFairValueThroughProfitOrLossTableTextBlock
494 Disclosure of financial assets held for trading Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialAssetsHeldForTradingExplanatory
495 Disclosure of financial assets designated at fair value through profit or loss [Table Text Block] Concept (Text Block (HTML)) For Period wf:DisclosureOfFinancialAssetsDesignatedAtFairValueThroughProfitOrLossTableTextBlock
496 23080101 - Disclosure - Available for sale financial assets (Tables) Network

*

*

 http://www.wooribank.com/role/Available-for-salefinancialassetsTables
497 Implied Table Table

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 implied:Table
498 Available-for-sale Financial Assets [Abstract] Abstract ifrs-full:AvailableforsaleFinancialAssetsAbstract
499 Details of Available for sale financial assets Concept (Text Block (HTML)) For Period us-gaap:ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock
500 23090101 - Disclosure - Held to maturity financial assets (Tables) Network

*

*

 http://www.wooribank.com/role/HeldtomaturityfinancialassetsTables
501 Implied Table Table

*

*

 implied:Table
502 Disclosure of held-to-maturity financial assets [Abstract] Abstract wf:DisclosureOfHeldToMaturityFinancialAssetsAbstract
503 Held-To-Maturity Financial Assets Concept (Text Block (HTML)) For Period us-gaap:HeldToMaturitySecuritiesTextBlock
504 23100101 - Disclosure - Loans and receivables (Tables) Network

*

*

 http://www.wooribank.com/role/LoansandreceivablesTables
505 Implied Table Table

*

*

 implied:Table
506 Disclosure Of Loans And Receivables [Abstract] Abstract wf:DisclosureOfLoansAndReceivablesAbstract
507 Schedule of loans and receivables [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfLoansAndReceivablesTableTextBlock
508 Schedule of due from financial institutions [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfDueFromFinancialInstitutionsTableTextBlock
509 Restricted due from banks [Table Text Block] Concept (Text Block (HTML)) For Period wf:RestrictedDueFromBanksTableTextBlock
510 Schedule of loans [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfLoansTableTextBlock
511 Schedule of other receivables [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfOtherReceivablesTableTextBlock
512 Changes in allowance for probable credit losses on loans and receivables Concept (Text Block (HTML)) For Period us-gaap:AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock
513 23110101 - Disclosure - Fair value of financial assets and liabilities (Tables) Network

*

*

 http://www.wooribank.com/role/FairvalueoffinancialassetsandliabilitiesTables
514 Implied Table Table

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*

 implied:Table
515 Disclosure Of Fair Value Measurement [Abstract] Abstract wf:DisclosureOfFairValueMeasurementAbstract
516 Schedule of fair value measurement of financial instruments [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfFairValueMeasurementOfFinancialInstrumentsTableTextBlock
517 Valuation techniques and inputs used in fair value measurement of financial instruments measured at fair value [Table Text Block] Concept (Text Block (HTML)) For Period wf:ValuationTechniquesAndInputsUsedInFairValueMeasurementOfFinancialInstrumentsMeasuredAtFairValueTableTextBlock
518 Schedule of significant unobservable inputs used in fair value measurement of financial assets and liabilities [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfSignificantUnobservableInputsUsedInFairValueMeasurementOfFinancialAssetsAndLiabilitiesTableTextBlock
519 Reconciliation of changes in financial assets and liabilities classified as level3 of fair value hierarchy [Table Text Block] Concept (Text Block (HTML)) For Period wf:ReconciliationOfChangesInFinancialAssetsAndLiabilitiesClassifiedAsLevel3OfFairValueHierarchyTableTextBlock
520 Schedule of sensitivity analysis dueto one or more unobservable inputs on fair value of level3 financial instruments [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfSensitivityAnalysisDuetoOneOrMoreUnobservableInputsOnFairValueOfLevel3FinancialInstrumentsTableTextBlock
521 Schedule of fair value measurement of financial instruments measured at amortised costs [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfFairValueMeasurementOfFinancialInstrumentsMeasuredAtAmortisedCostsTableTextBlock
522 Valuation techniques and inputs used in fair value measurement of financial instruments measured at amortised costs [Table Text Block] Concept (Text Block (HTML)) For Period wf:ValuationTechniquesAndInputsUsedInFairValueMeasurementOfFinancialInstrumentsMeasuredAtAmortisedCostsTableTextBlock
523 23120101 - Disclosure - Derecognition and offset of financial instruments (Tables) Network

*

*

 http://www.wooribank.com/role/DerecognitionandoffsetoffinancialinstrumentsTables
524 Implied Table Table

*

*

 implied:Table
525 Disclosure of derecognition and offsetting of financial assets and liabilities [Abstract] Abstract wf:DisclosureOfDerecognitionAndOffsettingOfFinancialAssetsAndLiabilitiesAbstract
526 Transferred financial assets that are derecognized in their entirety Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfContinuingInvolvementInDerecognisedFinancialAssetsExplanatory
527 Schedule of financial assets under repurchase agreement transferred during period which do not qualify for derecognition [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfFinancialAssetsUnderRepurchaseAgreementTransferredDuringPeriodWhichDoNotQualifyForDerecognitionTableTextBlock
528 Schedule of securities lent during period which do not qualify for derecognition [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfSecuritiesLentDuringPeriodWhichDoNotQualifyForDerecognitionTableTextBlock
529 Financial instruments subject to offset enforceable master netting agreements or similar agreements Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOffsettingOfFinancialAssetsExplanatory
530 23130101 - Disclosure - Investment in Joint Ventures and Associates (Tables) Network

*

*

 http://www.wooribank.com/role/InvestmentinJointVenturesandAssociatesTables
531 Implied Table Table

*

*

 implied:Table
532 Equity Method Investments And Joint Ventures [Abstract] Abstract us-gaap:EquityMethodInvestmentsAndJointVenturesAbstract
533 Schedule of investments in associates and joint ventures accounted for using equity method [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfInvestmentsInAssociatesAndJointVenturesAccountedForUsingEquityMethodTableTextBlock
534 Schedule of changes in carrying value of investments in associates and joint ventures accounted for using equity method [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfChangesInCarryingValueOfInvestmentsInAssociatesAndJointVenturesAccountedForUsingEquityMethodTableTextBlock
535 Reconciliation of summarised financial information of associates and joint ventures accounted for using equity method to carrying amount of interest in associates and joint ventures [Table Text Block] Concept (Text Block (HTML)) For Period wf:ReconciliationOfSummarisedFinancialInformationOfAssociatesAndJointVenturesAccountedForUsingEquityMethodToCarryingAmountOfInterestInAssociatesAndJointVenturesTableTextBlock
536 Schedule of investments that were not accounted for using equity method [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfInvestmentsThatWereNotAccountedForUsingEquityMethodTableTextBlock
537 Reconciliation from net assets of investments in associates and joint ventures accounted for using equity method to book value [Table Text Block] Concept (Text Block (HTML)) For Period wf:ReconciliationFromNetAssetsOfInvestmentsInAssociatesAndJointVenturesAccountedForUsingEquityMethodToBookValueTableTextBlock
538 23140101 - Disclosure - Investment Properties (Tables) Network

*

*

 http://www.wooribank.com/role/InvestmentPropertiesTables
539 Implied Table Table

*

*

 implied:Table
540 Disclosure Of Investment Property [Abstract] Abstract ifrs-full:DisclosureOfInvestmentPropertyAbstract
541 Carrying amount of investment property [Table Text Block] Concept (Text Block (HTML)) For Period wf:CarryingAmountOfInvestmentPropertyTableTextBlock
542 Reconciliation of changes in investment property [Table Text Block] Concept (Text Block (HTML)) For Period wf:ReconciliationOfChangesInInvestmentPropertyTableTextBlock
543 23150101 - Disclosure - Premises and Equipment (Tables) Network

*

*

 http://www.wooribank.com/role/PremisesandEquipmentTables
544 Implied Table Table

*

*

 implied:Table
545 Disclosure Of Property Plant And Equipment [Abstract] Abstract ifrs-full:DisclosureOfPropertyPlantAndEquipmentAbstract
546 Carrying amount of property plant and equipment [Table Text Block] Concept (Text Block (HTML)) For Period wf:CarryingAmountOfPropertyPlantAndEquipmentTableTextBlock
547 Reconciliation of changes in property plant and equipment [Table Text Block] Concept (Text Block (HTML)) For Period wf:ReconciliationOfChangesInPropertyPlantAndEquipmentTableTextBlock
548 23160101 - Disclosure - Intangible Assets and Goodwill (Tables) Network

*

*

 http://www.wooribank.com/role/IntangibleAssetsandGoodwillTables
549 Implied Table Table

*

*

 implied:Table
550 Disclosure Of Intangible Assets [Abstract] Abstract ifrs-full:DisclosureOfIntangibleAssetsAbstract
551 Carrying amount of intangible assets and goodwill [Table Text Block] Concept (Text Block (HTML)) For Period wf:CarryingAmountOfIntangibleAssetsAndGoodwillTableTextBlock
552 Reconciliation of changes in intangible assets and goodwill [Table Text Block] Concept (Text Block (HTML)) For Period wf:ReconciliationOfChangesInIntangibleAssetsAndGoodwillTableTextBlock
553 23170101 - Disclosure - Assets Held for sale (Tables) Network

*

*

 http://www.wooribank.com/role/AssetsHeldforsaleTables
554 Implied Table Table

*

*

 implied:Table
555 Non-current assets or disposal groups classified as held for sale or as held for distribution to owners [Abstract] Abstract ifrs-full:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwnersAbstract
556 Details of assets held for sale Concept (Text Block (HTML)) For Period us-gaap:DisclosureOfLongLivedAssetsHeldForSaleTextBlock
557 23180101 - Disclosure - Assets Subject to Lien and Assets Acquired Through Foreclosures (Tables) Network

*

*

 http://www.wooribank.com/role/AssetsSubjecttoLienandAssetsAcquiredThroughForeclosuresTables
558 Implied Table Table

*

*

 implied:Table
559 Disclosure Of Collateral [Abstract] Abstract wf:DisclosureOfCollateralAbstract
560 Assets subjected to lien Concept (Text Block (HTML)) For Period us-gaap:ScheduleOfFinancialInstrumentsOwnedAndPledgedAsCollateralTextBlock
561 Assets acquired through foreclosure [Table Text Block] Concept (Text Block (HTML)) For Period wf:AssetsAcquiredThroughForeclosureTableTextBlock
562 Schedule of securities lent [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfSecuritiesLentTableTextBlock
563 Collaterals held that can be disposed and re collateralized regardless of defaults of counterparties Concept (Text Block (HTML)) For Period us-gaap:ScheduleOfSecuritiesFinancingTransactionsTextBlock
564 23190101 - Disclosure - Other Assets (Tables) Network

*

*

 http://www.wooribank.com/role/OtherAssetsTables
565 Implied Table Table

*

*

 implied:Table
566 Miscellaneous assets [Abstract] Abstract ifrs-full:MiscellaneousAssetsAbstract
567 Details of other assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfPrepaymentsAndOtherAssetsExplanatory
568 23200101 - Disclosure - Financial Liabilitiy at Fair Value Through Profit or Loss (Tables) Network

*

*

 http://www.wooribank.com/role/FinancialLiabilitiyatFairValueThroughProfitorLossTables
569 Implied Table Table

*

*

 implied:Table
570 Financial liabilities at fair value through profit or loss [Abstract] Abstract ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossAbstract
571 Financial liabilities at fair value through profit or loss Concept (Text Block (HTML)) For Period wf:ScheduleOfFinancialLiabilitiesAtFairValueThroughProfitOrLossTableTextBlock
572 Schedule of financial liabilities held for trading [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfFinancialLiabilitiesHeldForTradingTableTextBlock
573 Schedule of financial liabilities designated at fair value through profit or loss [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfFinancialLiabilitiesDesignatedAtFairValueThroughProfitOrLossTableTextBlock
574 Schedule of changes in fair value of financial liability attributable to changes in credit risk of liability [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfChangesInFairValueOfFinancialLiabilityAttributableToChangesInCreditRiskOfLiabilityTableTextBlock
575 Difference between carrying amount of financial liabilities at fair value through profit or losss and amount contractually required to pay at maturity to holder of obligation [Table Text Block] Concept (Text Block (HTML)) For Period wf:DifferenceBetweenCarryingAmountOfFinancialLiabilitiesAtFairValueThroughProfitOrLosssAndAmountContractuallyRequiredToPayAtMaturityToHolderOfObligationTableTextBlock
576 23210101 - Disclosure - Deposits Due to Customers (Tables) Network

*

*

 http://www.wooribank.com/role/DepositsDuetoCustomersTables
577 Implied Table Table

*

*

 implied:Table
578 Deposits from customers [Abstract] Abstract ifrs-full:DepositsFromCustomersAbstract
579 Details of deposits sorted by interest type Concept (Text Block (HTML)) For Period us-gaap:DepositLiabilitiesTypeTableTextBlock
580 23220101 - Disclosure - Borrowings and Debentures (Tables) Network

*

*

 http://www.wooribank.com/role/BorrowingsandDebenturesTables
581 Implied Table Table

*

*

 implied:Table
582 Borrowings [Abstract] Abstract ifrs-full:BorrowingsAbstract
583 Details of borrowings Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory
584 Schedule of debentures [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfDebenturesTableTextBlock
585 23230101 - Disclosure - Provisions (Tables) Network

*

*

 http://www.wooribank.com/role/ProvisionsTables
586 Implied Table Table

*

*

 implied:Table
587 Provisions [Abstract] Abstract ifrs-full:ProvisionsAbstract
588 Schedule of provisions [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfProvisionsTableTextBlock
589 Reconciliation of changes in other provisions [Table Text Block] Concept (Text Block (HTML)) For Period wf:ReconciliationOfChangesInOtherProvisionsTableTextBlock
590 Reconciliation of changes in provision for decommissioning restoration and rehabilitation costs [Table Text Block] Concept (Text Block (HTML)) For Period wf:ReconciliationOfChangesInProvisionForDecommissioningRestorationAndRehabilitationCostsTableTextBlock
591 23240101 - Disclosure - Net Defined Benefits Liability (Asset) (Tables) Network

*

*

 http://www.wooribank.com/role/NetDefinedBenefitsLiability(Asset)Tables
592 Implied Table Table

*

*

 implied:Table
593 Disclosure of defined benefit plans [Abstract] Abstract ifrs-full:DisclosureOfDefinedBenefitPlansAbstract
594 Net defined benefit liability (asset) Concept (Text Block (HTML)) For Period wf:ScheduleOfDefinedBenefitLiabilityAssetTableTextBlock
595 Schedule of defined benefit liability asset by major subsidiaries [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfDefinedBenefitLiabilityAssetByMajorSubsidiariesTableTextBlock
596 Changes in the carrying value of defined benefit obligation Concept (Text Block (HTML)) For Period us-gaap:ScheduleOfChangesInProjectedBenefitObligationsTableTextBlock
597 Changes in the plan assets Concept (Text Block (HTML)) For Period us-gaap:ScheduleOfChangesInFairValueOfPlanAssetsTableTextBlock
598 Analysis for the maturity which is not discounted of the defined benefit obligation of the Bank based on current wages Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInformationAboutMaturityProfileOfDefinedBenefitObligationExplanatory
599 Schedule of defined benefit plan amounts recognized in profit loss and other comprehensive income loss [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfDefinedBenefitPlanAmountsRecognizedInProfitLossAndOtherComprehensiveIncomeLossTableTextBlock
600 Key actuarial assumptions used in defined benefit liability assessment Concept (Text Block (HTML)) For Period us-gaap:ScheduleOfAssumptionsUsedTableTextBlock
601 Sensitivity to actuarial assumptions used in the assessment of defined benefit obligation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsExplanatory
602 23250101 - Disclosure - Other Financial Liabilities and Other Liabilities (Tables) Network

*

*

 http://www.wooribank.com/role/OtherFinancialLiabilitiesandOtherLiabilitiesTables
603 Implied Table Table

*

*

 implied:Table
604 Miscellaneous Liabilities [Abstract] Abstract ifrs-full:MiscellaneousLiabilitiesAbstract
605 Schedule of miscellaneous other liabilities [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfMiscellaneousOtherLiabilitiesTableTextBlock
606 23260101 - Disclosure - Derivatives (Tables) Network

*

*

 http://www.wooribank.com/role/DerivativesTables
607 Implied Table Table

*

*

 implied:Table
608 Disclosure of detailed information about hedges [Abstract] Abstract ifrs-full:DisclosureOfHedgeAccountingAbstract
609 Details of derivative assets and derivative liabilities Concept (Text Block (HTML)) For Period us-gaap:ScheduleOfDerivativeInstrumentsTextBlock
610 Gains and losses from fair value hedge [Table Text Block] Concept (Text Block (HTML)) For Period wf:GainsAndLossesFromFairValueHedgeTableTextBlock
611 23270101 - Disclosure - Deferred Day 1 Profit or Loss (Tables) Network

*

*

 http://www.wooribank.com/role/DeferredDay1ProfitorLossTables
612 Implied Table Table

*

*

 implied:Table
613 Deferred Day One Profit Or Loss [Abstract] Abstract wf:DeferredDayOneProfitOrLossAbstract
614 Changes in deferred day one profits or losses [Table Text Block] Concept (Text Block (HTML)) For Period wf:ChangesInDeferredDayOneProfitsOrLossesTableTextBlock
615 23280101 - Disclosure - Capital Stock and Capital Surplus (Tables) Network

*

*

 http://www.wooribank.com/role/CapitalStockandCapitalSurplusTables
616 Implied Table Table

*

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 implied:Table
617 Disclosure Of Issued Capital And Miscellaneous Equity [Abstract] Abstract wf:DisclosureOfIssuedCapitalAndMiscellaneousEquityAbstract
618 Number of authorized shares and others Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfClassesOfShareCapitalExplanatory
619 Changes in numbers of issued shares of common stock Concept (Text Block (HTML)) For Period us-gaap:ScheduleOfCommonStockOutstandingRollForwardTableTextBlock
620 Disclosure of issued capital and capital surplus [Table Text Block] Concept (Text Block (HTML)) For Period wf:DisclosureOfIssuedCapitalAndCapitalSurplusTableTextBlock
621 23290101 - Disclosure - Hybrid Securities (Tables) Network

*

*

 http://www.wooribank.com/role/HybridSecuritiesTables
622 Implied Table Table

*

*

 implied:Table
623 Disclosure Of Other Equity Interest [Abstract] Abstract wf:DisclosureOfOtherEquityInterestAbstract
624 Schedule of other equity interest [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfOtherEquityInterestTableTextBlock
625 23300101 - Disclosure - Other Equity (Tables) Network

*

*

 http://www.wooribank.com/role/OtherEquityTables
626 Implied Table Table

*

*

 implied:Table
627 Disclosure Of Other Equity [Abstract] Abstract wf:DisclosureOfOtherEquityAbstract
628 Details of other equity Concept (Text Block (HTML)) For Period us-gaap:ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock
629 Reconciliation of changes in accumulated other comprehensive income [Table Text Block] Concept (Text Block (HTML)) For Period wf:ReconciliationOfChangesInAccumulatedOtherComprehensiveIncomeTableTextBlock
630 23310101 - Disclosure - Retained Earnings (Tables) Network

*

*

 http://www.wooribank.com/role/RetainedEarningsTables
631 Implied Table Table

*

*

 implied:Table
632 Retained Earnings Note Disclosure [Abstract] Abstract us-gaap:RetainedEarningsNoteDisclosureAbstract
633 Schedule of appropriated and unappropriated retained earnings [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfAppropriatedAndUnappropriatedRetainedEarningsTableTextBlock
634 Changes in retained earnings [Table Text Block] Concept (Text Block (HTML)) For Period wf:ChangesInRetainedEarningsTableTextBlock
635 23320101 - Disclosure - Regulatory Reserve for Credit Loss (Tables) Network

*

*

 http://www.wooribank.com/role/RegulatoryReserveforCreditLossTables
636 Implied Table Table

*

*

 implied:Table
637 Disclosure Of Regulatory Capital Requirements Under Regulation On Supervision Of Banking Business [Abstract] Abstract wf:DisclosureOfRegulatoryCapitalRequirementsUnderRegulationOnSupervisionOfBankingBusinessAbstract
638 Schedule of regulatory capital requirements under regulation on supervision of banking business [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfRegulatoryCapitalRequirementsUnderRegulationOnSupervisionOfBankingBusinessTableTextBlock
639 Adjustments of regulatory reserves on net income and earnings per share [Table Text Block] Concept (Text Block (HTML)) For Period wf:AdjustmentsOfRegulatoryReservesOnNetIncomeAndEarningsPerShareTableTextBlock
640 23340101 - Disclosure - Net Interest Income (Tables) Network

*

*

 http://www.wooribank.com/role/NetInterestIncomeTables
641 Implied Table Table

*

*

 implied:Table
642 Interest Revenue (Expense), Net [Abstract] Abstract us-gaap:InterestRevenueOrExpenseNetAbstract
643 Details of interest income Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestIncomeExplanatory
644 Details of interest expense Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestExpenseExplanatory
645 23350101 - Disclosure - Net Fees and Commissions Income (Tables) Network

*

*

 http://www.wooribank.com/role/NetFeesandCommissionsIncomeTables
646 Implied Table Table

*

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 implied:Table
647 Fee and commission income (expense) [Abstract] Abstract ifrs-full:FeeAndCommissionIncomeExpenseAbstract
648 Schedule of fee and commission income [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfFeeAndCommissionIncomeTableTextBlock
649 Schedule of fee and commission expense [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfFeeAndCommissionExpenseTableTextBlock
650 23360101 - Disclosure - Dividend Income (Tables) Network

*

*

 http://www.wooribank.com/role/DividendIncomeTables
651 Implied Table Table

*

*

 implied:Table
652 Disclosure Of Revenue From Dividends [Abstract] Abstract wf:DisclosureOfRevenueFromDividendsAbstract
653 Schedule of revenue from dividends [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfRevenueFromDividendsTableTextBlock
654 23370101 - Disclosure - Gains (Losses) on Financial Assets at Fair Value Through Profit or Loss (Tables) Network

*

*

 http://www.wooribank.com/role/Gains(Losses)onFinancialAssetsatFairValueThroughProfitorLossTables
655 Implied Table Table

*

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 implied:Table
656 Disclosure Of Gains Losses On Financial Instruments At Fair Value Through Profit Or Loss [Abstract] Abstract wf:DisclosureOfGainsLossesOnFinancialInstrumentsAtFairValueThroughProfitOrLossAbstract
657 Schedule of gains losses on financial instruments at fair value through profit or loss [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfGainsLossesOnFinancialInstrumentsAtFairValueThroughProfitOrLossTableTextBlock
658 Schedule of gains losses on financial instruments held for trading [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfGainsLossesOnFinancialInstrumentsHeldForTradingTableTextBlock
659 Schedule of gains losses on financial instruments designated at fair value through profit or loss [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfGainsLossesOnFinancialInstrumentsDesignatedAtFairValueThroughProfitOrLossTableTextBlock
660 23380101 - Disclosure - Net Loss on Available For Sale Financial Assets (Tables) Network

*

*

 http://www.wooribank.com/role/NetLossonAvailableForSaleFinancialAssetsTables
661 Implied Table Table

*

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 implied:Table
662 Disclosure of gains losses recognised in profit or loss available-for-sale securities [Abstract] Abstract wf:DisclosureOfGainsLossesRecognisedInProfitOrLossAvailableForSaleSecuritiesAbstract
663 Gains losses recognised in profit or loss available-for-sale financial assets [Table Text Block] Concept (Text Block (HTML)) For Period wf:GainsLossesRecognisedInProfitOrLossAvailableForSaleFinancialAssetsTableTextBlock
664 23390101 - Disclosure - Impairment Losses Due to Credit Loss (Tables) Network

*

*

 http://www.wooribank.com/role/ImpairmentLossesDuetoCreditLossTables
665 Implied Table Table

*

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 implied:Table
666 Disclosure of impairment loss and reversal of impairment loss [Abstract] Abstract ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossAbstract
667 Impairment losses on loans and receivables guarantees and loan commitment recognized for credit loss Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossExplanatory
668 23400101 - Disclosure - General, Administrative, and Other Net Operating Incomes (Expenses) (Tables) Network

*

*

 http://www.wooribank.com/role/GeneralAdministrativeandOtherNetOperatingIncomes(Expenses)Tables
669 Implied Table Table

*

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 implied:Table
670 Disclosure Of General And Administrative Expense And Other Net Operating Income Expense [Abstract] Abstract wf:DisclosureOfGeneralAndAdministrativeExpenseAndOtherNetOperatingIncomeExpenseAbstract
671 Details of administrative expenses Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfGeneralAndAdministrativeExpenseExplanatory
672 Schedule of other operating income [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfOtherOperatingIncomeTableTextBlock
673 Schedule of other operating expense [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfOtherOperatingExpenseTableTextBlock
674 23410101 - Disclosure - Other Net Non Operating Income (Tables) Network

*

*

 http://www.wooribank.com/role/OtherNetNonOperatingIncomeTables
675 Implied Table Table

*

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 implied:Table
676 Other Nonoperating Income (Expense) [Abstract] Abstract us-gaap:OtherNonoperatingIncomeExpenseAbstract
677 Share of profit loss of associates and joint ventures accounted for using equity method [Table Text Block] Concept (Text Block (HTML)) For Period wf:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethodTableTextBlock
678 Other non operating incomes and expenses Concept (Text Block (HTML)) For Period us-gaap:ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock
679 Schedule of other non-operating income [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfOtherNonoperatingIncomeTableTextBlock
680 Schedule of other non-operating expense [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfOtherNonoperatingExpenseTableTextBlock
681 23420101 - Disclosure - Income Tax Expense (Tables) Network

*

*

 http://www.wooribank.com/role/IncomeTaxExpenseTables
682 Implied Table Table

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 implied:Table
683 Major components of tax expense (income) [Abstract] Abstract ifrs-full:MajorComponentsOfTaxExpenseIncomeAbstract
684 Details of income tax expenses Concept (Text Block (HTML)) For Period us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock
685 Relationship between net income loss before income tax expense and Income tax expense benefit Concept (Text Block (HTML)) For Period us-gaap:ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock
686 Schedule of changes in deferred tax assets and liabilities [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfChangesInDeferredTaxAssetsAndLiabilitiesTableTextBlock
687 Unrecognized temporary differences Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatory
688 Total Concept (Text Block (HTML)) For Period wf:DeferredTaxChargedDirectlyToOtherComprehensiveIncomeTableTextBlock
689 Schedule of current tax assets and liabilities [Table Text Block] Concept (Text Block (HTML)) For Period wf:ScheduleOfCurrentTaxAssetsAndLiabilitiesTableTextBlock
690 Deferred tax assets and liabilities Concept (Text Block (HTML)) For Period us-gaap:ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock
691 23430101 - Disclosure - Earnings per Share (Tables) Network

*

*

 http://www.wooribank.com/role/Disclosure-EarningsperShareTables
692 Implied Table Table

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 implied:Table
693 Earnings per share [Abstract] Abstract ifrs-full:EarningsPerShareAbstract
694 Details of earnings per share Concept (Text Block (HTML)) For Period us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock
695 23440101 - Disclosure - Contingent Liabilities and Commitments (Tables) Network

*

*

 http://www.wooribank.com/role/ContingentLiabilitiesandCommitmentsTables
696 Implied Table Table

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 http://www.wooribank.com/role/SignificantBasisOfPreparationAndAccountingPoliciesKIFRS1109ExpectedImpactOnTheAllowanceForCreditLossesOfAdoptingKIFRS1109Detail
948 Disclosure of the expected impact on the allowance for credit losses [Table] Table

*

*

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950 Financial assets category [Domain] Member ifrs-full:FinancialAssetsCategoryMember
951 Deposits Member wf:DueFromFinancialInstitutionsMember
952 Debt securities Member ifrs-full:DebtSecuritiesMember
953 Available for sale debt securities Member wf:DebtSecuritiesOfFinancialAssetsAvailableforsaleMember
954 Held to maturity securities Member ifrs-full:HeldtomaturityInvestmentsCategoryMember
955 Loan receivables and other financial assets Member wf:LoanReceivablesAndOtherFinancialAssetsMember
956 Guarantees Member ifrs-full:GuaranteesMember
957 Loan commitments Member ifrs-full:LoanCommitmentsMember
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959 Allowance for credit losses per IAS 39 (A) Concept (Monetary) As Of Credit wf:AllowanceAccountForCreditLossesOfFinancialAssetsIncludingOfOffBalanceAccount
960 Allowance for credit losses per IFRS 9 (B) Concept (Monetary) As Of Credit wf:AllowanceAccountForCreditLossesOfFinancialAssetsFirstApplicationOfIFRS9
961 Increases (B-A) Concept (Monetary) As Of Credit wf:ImpactOfAllowanceAccountForCreditLossesOfFinancialAssetsFirstApplicationOfIFRS9
962 24021201 - Disclosure - Significant Basis Of Preparation And Accounting Policies_Estimated economic useful lives for premises and equipment except for land (Details) Network

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 http://www.wooribank.com/role/SignificantBasisOfPreparationAndAccountingPoliciesEstimatedEconomicUsefulLivesForPremisesAndEquipmentExceptForLandDetails
963 Disclosure of useful life of property plant and equipment [Table] Table

*

*

 wf:DisclosureOfUsefulLifeOfPropertyPlantAndEquipmentTable
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966 Buildings used for business purpose Member ifrs-full:BuildingsMember
967 Structures in leased office Member ifrs-full:LeaseholdImprovementsMember
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969 Leased assets Member ifrs-full:PropertyPlantAndEquipmentSubjectToOperatingLeasesMember
970 Disclosure of property plant and equipment [Line Items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
971 Useful Life for property plant and equipment Concept (Text/String) For Period ifrs-full:UsefulLivesOrDepreciationRatesPropertyPlantAndEquipment
972 24021301 - Disclosure - Significant Basis Of Preparation And Accounting Policies_Estimated useful life for intangible assets (Details) Network

*

*

 http://www.wooribank.com/role/SignificantBasisOfPreparationAndAccountingPoliciesEstimatedUsefulLifeForIntangibleAssetsDetails
973 Disclosure of intangible assets with indefinite useful life [Table] Table

*

*

 ifrs-full:DisclosureOfIntangibleAssetsWithIndefiniteUsefulLifeTable
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978 Software and others Member ifrs-full:ComputerSoftwareMember
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980 Description and carrying amount of intangible assets with indefinite useful life Concept (Text/String) For Period ifrs-full:DescriptionAndCarryingAmountOfIntangibleAssetsWithIndefiniteUsefulLife
981 24040101 - Disclosure - Risk Management Maximum Exposure To Credit Risk (Details) Network

*

*

 http://www.wooribank.com/role/RiskManagementMaximumExposureToCreditRiskDetails
982 Disclosure of credit risk exposure [Table] Table

*

*

 ifrs-full:DisclosureOfCreditRiskExposureTable
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1002 Total Concept (Monetary) As Of ifrs-full:MaximumExposureToCreditRisk
1003 24040102 - Disclosure - Risk Management Credit risk exposure by geographical areas (Details) Network

*

*

 http://www.wooribank.com/role/RiskManagementCreditRiskExposureByGeographicalAreasDetails
1004 Disclosure of credit exposure by geographical areas [Table] Table

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*

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1016 Loans and receivables Concept (Monetary) As Of Debit ifrs-full:LoansAndReceivables
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1018 AFS debt securities Concept (Monetary) As Of Debit wf:DebtSecuritiesOfFinancialAssetsAvailableforsale
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1022 Off-balance sheet items Concept (Monetary) As Of Debit wf:OffBalancesheetItems
1023 24040103 - Disclosure - Risk Management - Credit risk exposure by industries (Details) Network

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*

 http://www.wooribank.com/role/RiskManagementCreditRiskExposureByIndustriesDetails
1024 Disclosure credit exposure by industries [Table] Table

*

*

 wf:DisclosureCreditExposureByIndustriesTable
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1036 Loans and receivables Concept (Monetary) As Of Debit ifrs-full:LoansAndReceivables
1037 Financial assets at FVTPL Concept (Monetary) As Of Debit wf:FinancialAssetsAtFairValueThroughProfitOrLossWhichAreExposuredToCreditRisk
1038 AFS debt securities Concept (Monetary) As Of Debit wf:DebtSecuritiesOfFinancialAssetsAvailableforsale
1039 HTM securities Concept (Monetary) As Of Debit ifrs-full:HeldtomaturityInvestments
1040 Derivative assets for hedging Concept (Monetary) As Of Debit ifrs-full:DerivativeFinancialAssetsHeldForHedging
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1042 Off-balance sheet items Concept (Monetary) As Of Debit wf:OffBalancesheetItems
1043 24040104 - Disclosure - Risk Management Credit exposure of loans and receivables by customer and loan classification (Details) Network

*

*

 http://www.wooribank.com/role/RiskManagementCreditExposureOfLoansAndReceivablesByCustomerAndLoanClassificationDetails
1044 Disclosure of financial assets that are either past due or impaired [Table] Table

*

*

 ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedTable
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1065 Total net Concept (Monetary) As Of Debit ifrs-full:LoansAndReceivables
1066 24040105 - Disclosure - Risk Management Credit quality of loans and receivables under internal rating system by customer (Details) Network

*

*

 http://www.wooribank.com/role/RiskManagementCreditQualityOfLoansAndReceivablesUnderInternalRatingSystemByCustomerDetails
1067 Disclosure of financial assets that are either past due or impaired [Table] Table

*

*

 ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedTable
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1086 24040106 - Disclosure - Risk Management_Aging analysis of loans and receivables pastdue but not impaired net of allowance (Details) Network

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*

 http://www.wooribank.com/role/RiskManagementAgingAnalysisOfLoansAndReceivablesPastdueButNotImpairedNetOfAllowanceDetails
1087 Disclosure of financial assets that are past due but not impaired [Table] Table

*

*

 wf:DisclosureOfFinancialAssetsThatArePastDueButNotImpairedTable
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1105 Securities held as collateral at fair value for loans and receivables past due but not impaired Concept (Monetary) As Of Debit wf:SecuritiesHeldAsCollateralAtFairValueForLoansAndReceivablesPastDueButNotImpaired
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1107 24040107 - Disclosure - Risk Management_Details of loans and receivables pastdue and impaired net of allowance (Details) Network

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*

 http://www.wooribank.com/role/RiskManagementDetailsOfLoansAndReceivablesPastdueAndImpairedNetOfAllowanceDetails
1108 Disclosure of financial assets that are impaired [Table] Table

*

*

 wf:DisclosureOfFinancialAssetsThatAreImpairedTable
1109 Categories of financial assets [Axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
1110 Financial assets category [Domain] Member ifrs-full:FinancialAssetsCategoryMember
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1121 Value of collateral Concept (Monetary) As Of Debit wf:SecuritiesHeldAsCollateralAtFairValueForLoansAndReceivablesThatAreIndividuallyDeterminedToBeImpaired
1122 Allowance account for credit losses of financial assets loans and receivables that are individually determined to be impaired Concept (Monetary) As Of Credit wf:AllowanceAccountForCreditLossesOfFinancialAssetsLoansAndReceivablesThatAreIndividuallyDeterminedToBeImpaired
1123 24040108 - Disclosure - Risk Management_Credit soundness of debt securities (Details) Network

*

*

 http://www.wooribank.com/role/RiskManagementCreditSoundnessOfDebtSecuritiesDetails
1124 Disclosure of external credit exposures [Table] Table

*

*

 ifrs-full:DisclosureOfExternalCreditExposuresTable
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1128 From AA minus to AA plus Member wf:CreditRatingsBetweenAAMinusAndAAPlusOfExternalCreditGradesMember
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1133 AFS debt securities Concept (Monetary) As Of Debit wf:FinancialAssetsAvailableforsaleOfDebtSecurities
1134 HTM securities Concept (Monetary) As Of Debit wf:HeldToMaturityInvestmentsOfDebtSecurities
1135 Total Concept (Monetary) As Of Debit wf:FinancialAssetsOfDebtSecuritiesByCreditRisks
1136 Description of rating agencies used Concept (Text/String) For Period ifrs-full:DescriptionOfRatingAgenciesUsed
1137 24040201 - Disclosure - Risk Management_Sensitivity Analysis of Market Risk (Details) Network

*

*

 http://www.wooribank.com/role/RiskManagementSensitivityAnalysisofMarketRiskDetails
1138 Implied Table Table

*

*

 implied:Table
1139 Sensitivity analysis for market risk [Abstract] Abstract wf:SensitivityAnalysisForMarketRiskAbstract
1140 Methods used in preparing sensitivity analysis reflecting interdependencies between risk variables Concept (Text/String) For Period ifrs-full:MethodsUsedInPreparingSensitivityAnalysisReflectingInterdependenciesBetweenRiskVariables
1141 Limitations that may result in information not fully reflecting fair value of assets and liabilities involved Concept (Text/String) For Period ifrs-full:LimitationsThatMayResultInInformationNotFullyReflectingFairValueOfAssetsAndLiabilitiesInvolved
1142 Methods and assumptions used in preparing sensitivity analysis Concept (Text/String) For Period ifrs-full:MethodsAndAssumptionsUsedInPreparingSensitivityAnalysis
1143 24040202 - Disclosure - Risk Management_Value at risk analysis for trading activities (Details) Network

*

*

 http://www.wooribank.com/role/RiskManagementValueAtRiskAnalysisForTradingActivitiesDetails
1144 Disclosure of sensitivity analysis of market risk for trading activities [Table] Table

*

*

 wf:DisclosureOfSensitivityAnalysisOfMarketRiskForTradingActivitiesTable
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1149 Foreign currencies Member ifrs-full:CurrencyRiskMember
1150 Commodity price Member ifrs-full:CommodityPriceRiskMember
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1163 Total VaR Concept (Monetary) As Of ifrs-full:ValueAtRisk
1164 24040203 - Disclosure - Risk Management_Net Interest Income and Net Portfolio Value Analysis according to interest changing scenario for assets and liabilities held by the Bank (Details) Network

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*

 http://www.wooribank.com/role/RiskManagementNetInterestIncomeAndNetPortfolioValueAnalysisAccordingToInterestChangingScenarioForAssetsAndLiabilitiesHeldByTheBankDetails
1165 Disclosure of sensitivity analysis of market risk for non trading activities of bank [Table] Table

*

*

 wf:DisclosureOfSensitivityAnalysisOfMarketRiskForNonTradingActivitiesOfBankTable
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1178 NPV Concept (Monetary) As Of Debit wf:NetPresentValue
1179 24040204 - Disclosure - Risk Management_Interest Earning at Risk and Interest Value at Risk based on BIS Framework for subsidiaries other than bank (Details) Network

*

*

 http://www.wooribank.com/role/RiskManagementInterestEarningAtRiskAndInterestValueAtRiskBasedOnBisFrameworkForSubsidiariesOtherThanBankDetails
1180 Implied Table Table

*

*

 implied:Table
1181 Disclosure of sensitivity analysis of market risk for non trading activities of subsidiaries other than bank [Abstract] Abstract wf:DisclosureOfSensitivityAnalysisOfMarketRiskForNonTradingActivitiesOfSubsidiariesOtherThanBankAbstract
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1183 VaR Concept (Monetary) For Period Credit wf:InterestRateValueAtRisk
1184 24040205 - Disclosure - Risk Management_Cash flows of principal amounts and interests from interest bearing assets and liabilities by repricing date (Details) Network

*

*

 http://www.wooribank.com/role/RiskManagementCashFlowsOfPrincipalAmountsAndInterestsFromInterestBearingAssetsAndLiabilitiesByRePricingDateDetails
1185 Disclosure of maturity analysis for financial assets held for managing liquidity risk [Table] Table

*

*

 ifrs-full:DisclosureOfMaturityAnalysisForFinancialAssetsHeldForManagingLiquidityRiskTable
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1206 Cash flows of principal and interests from interest bearing liabilities Concept (Monetary) As Of Credit wf:CashFlowsOfPrincipalAndInterestsFromInterestBearingLiabilities
1207 24040206 - Disclosure - Risk Management_Foreign currency risk exposure of financial instruments in foreign currency (Details) Network

*

*

 http://www.wooribank.com/role/RiskManagementForeignCurrencyRiskExposureOfFinancialInstrumentsInForeignCurrencyDetails
1208 Schedule of differences between reported amount and reporting currency denominated amount [Table] Table

*

*

 us-gaap:ScheduleOfDifferencesBetweenReportedAmountAndReportingCurrencyDenominatedAmountTable
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1237 Off balance accounts Concept (Monetary) As Of Credit wf:OffBalanceSheetItemInForeignCurrencies
1238 24040301 - Disclosure - Risk Management_Cash flow from principal and interest payments of nonderivative financial liabilities by remaining contractual maturities (Details) Network

*

*

 http://www.wooribank.com/role/RiskManagementCashFlowFromPrincipalAndInterestPaymentsOfNonDerivativeFinancialLiabilitiesByRemainingContractualMaturitiesDetails
1239 Disclosure of maturity analysis for nonderivative financial liabilities by remaining contractual maturity [Table] Table

*

*

 wf:DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesByRemainingContractualMaturityTable
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1250 Financial liabilities at FVTPL Concept (Monetary) As Of Credit wf:CashFlowsOfPrincipalsAndInterestsByRemainingContractualMaturityOfFinancialLiabilitiesAtFairValueThroughProfitOrLoss
1251 Deposits due to customers Concept (Monetary) As Of Credit wf:CashFlowsOfPrincipalsAndInterestsByRemainingContractualMaturityOfDepositsFromCustomers
1252 Borrowings Concept (Monetary) As Of Credit wf:CashFlowsOfPrincipalsAndInterestsByRemainingContractualMaturityOfBorrowings
1253 Debentures Concept (Monetary) As Of Credit wf:CashFlowsOfPrincipalsAndInterestsByRemainingContractualMaturityOfDebentures
1254 Other financial liabilities Concept (Monetary) As Of Credit wf:CashFlowsOfPrincipalsAndInterestsByRemainingContractualMaturityOfOtherFinancialLiabilities
1255 24040302 - Disclosure - Risk Management_Cash flow from principal and interest payments of nonderivative financial liabilities by estimated redemption or withdrawal (Details) Network

*

*

 http://www.wooribank.com/role/RiskManagementCashFlowFromPrincipalAndInterestPaymentsOfNonDerivativeFinancialLiabilitiesByEstimatedRedemptionOrWithdrawalDetails
1256 Disclosure of maturity analysis for nonderivative financial liabilities by estimated redemption or withdrawal [Table] Table

*

*

 wf:DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesByEstimatedRedemptionOrWithdrawalTable
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1269 Borrowings Concept (Monetary) As Of Credit wf:CashFlowsOfPrincipalsAndInterestsByEstimatedRedemptionOrWithdrawalOfBorrowings
1270 Debentures Concept (Monetary) As Of Credit wf:CashFlowsOfPrincipalsAndInterestsByEstimatedRedemptionOrWithdrawalOfDebentures
1271 Other financial liabilities Concept (Monetary) As Of Credit wf:CashFlowsOfPrincipalsAndInterestsByEstimatedRedemptionOrWithdrawalOfOtherFinancialLiabilities
1272 24040303 - Disclosure - Risk Management_Cash flow of derivative financial liabilities by maturities (Details) Network

*

*

 http://www.wooribank.com/role/RiskManagementCashFlowOfDerivativeFinancialLiabilitiesByMaturitiesDetails
1273 Disclosure of maturity analysis for derivative financial liabilities [Table] Table

*

*

 ifrs-full:DisclosureOfMaturityAnalysisForDerivativeFinancialLiabilitiesTable
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1284 24040304 - Disclosure - Risk Management_Maturity analysis of Offbalance accounts (Details) Network

*

*

 http://www.wooribank.com/role/RiskManagementMaturityAnalysisOfOffBalanceAccountsDetails
1285 Implied Table Table

*

*

 implied:Table
1286 Disclosure of maturity analysis for off balance sheet item [Abstract] Abstract wf:DisclosureOfMaturityAnalysisForOffBalanceSheetItemAbstract
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1288 Loan commitments Concept (Monetary) As Of Credit wf:ContractualOutstandingsOfLoanCommitments
1289 24040501 - Disclosure - Risk Management_Capital Ratio (Details) Network

*

*

 http://www.wooribank.com/role/RiskManagementCapitalRatioDetails
1290 Implied Table Table

*

*

 implied:Table
1291 Disclosure of objectives policies and processes for managing capital [Abstract] Abstract ifrs-full:DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalAbstract
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1293 Minimum tier one ratio Concept (Percent) For Period wf:MinimumTierOneRatio
1294 Minimum total regulatory capital ratio Concept (Percent) For Period wf:MinimumTotalRegulatoryCapitalRatio
1295 Summary of quantitative data about what entity manages as capital Concept (Text/String) For Period ifrs-full:SummaryOfQuantitativeDataAboutWhatEntityManagesAsCapital
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1302 Tier 2 capital Concept (Monetary) As Of Credit us-gaap:TierTwoRiskBasedCapital
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1305 Risk weighted assets for market risk Concept (Monetary) As Of Debit wf:RiskWeightedAssetsForMarketRisk
1306 Risk weighted assets for operational risk Concept (Monetary) As Of Debit wf:RiskWeightedAssetsForOperationalRisk
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1311 24050101 - Disclosure - Operating Segments_Segment by types of customers (Details) Network

*

*

 http://www.wooribank.com/role/OperatingSegmentsSegmentByTypesOfCustomersDetails
1312 Disclosure of operating segments [Table] Table

*

*

 ifrs-full:DisclosureOfOperatingSegmentsTable
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1325 Interest income Concept (Monetary) For Period Credit ifrs-full:RevenueFromInterest
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1338 Income tax expense Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
1339 Net income Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
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1341 Factors used to identify entitys reportable segments Concept (Text/String) For Period ifrs-full:FactorsUsedToIdentifyEntitysReportableSegments
1342 24050201 - Disclosure - Operating Segments_Information on products and services (Details) Network

*

*

 http://www.wooribank.com/role/OperatingSegmentsInformationOnProductsAndServicesDetails
1343 Implied Table Table

*

*

 implied:Table
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1345 Description of information on products and services Concept (Text/String) For Period wf:DescriptionOfInformationOnProductsAndServices
1346 24050301 - Disclosure - Operating Segments_Information on geographical areas (Details) Network

*

*

 http://www.wooribank.com/role/OperatingSegmentsInformationOnGeographicalAreasDetails
1347 Disclosure of geographical areas [Table] Table

*

*

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1355 24060101 - Disclosure - Cash And Cash Equivalents Details of Cash and Cash Equivalents (Details) Network

*

*

 http://www.wooribank.com/role/CashAndCashEquivalentsDetailsOfCashAndCashEquivalentsDetails
1356 Implied Table Table

*

*

 implied:Table
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1360 Demand deposits Concept (Monetary) As Of Debit ifrs-full:BalancesWithBanks
1361 Fixed deposits Concept (Monetary) As Of Debit ifrs-full:ShorttermDepositsClassifiedAsCashEquivalents
1362 Total Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
1363 24060201 - Disclosure - Cash And Cash Equivalents Significant Noncash Transactions (Details) Network

*

*

 http://www.wooribank.com/role/CashAndCashEquivalentsSignificantNonCashTransactionsDetails
1364 Implied Table Table

*

*

 implied:Table
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1367 Changes in other comprehensive income (loss) of investment in associates Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
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1370 Changes in other comprehensive income due to remeasurement of the net defined benefit liability Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
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1373 Changes in unpaid dividends of hybrid equity securities Concept (Monetary) For Period Credit wf:ChangesInUnpaidDividendsOfHybridEquitySecurities
1374 24060301 - Disclosure - Cash And Cash Equivalents Liability Adjustments from Financing Activities (Details) Network

*

*

 http://www.wooribank.com/role/CashAndCashEquivalentsLiabilityAdjustmentsfromFinancingActivitiesDetails
1375 Disclosure of reconciliation of liabilities arising from financing activities [Table] Table

*

*

 ifrs-full:DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesTable
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1387 Variation of gains on valuation of hedged items Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangesInFairValuesLiabilitiesArisingFromFinancingActivities
1388 Others Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughOtherChangesLiabilitiesArisingFromFinancingActivities
1389 December 31,2017 Concept (Monetary) As Of Credit ifrs-full:LiabilitiesArisingFromFinancingActivities
1390 24070101 - Disclosure - Financial Assets At Fair Value Through Profit Or Loss_Financial assets held for trading and Financial assets designated at fair value through profit or loss (Details) Network

*

*

 http://www.wooribank.com/role/FinancialAssetsAtFairValueThroughProfitOrLossFinancialAssetsAtFairValueThroughProfitOrLossDetails
1391 Financial assets at fair value through profit or loss [Table] Table

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 wf:FinancialAssetsAtFairValueThroughProfitOrLossTable
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1413 Financial assets at FVTPL Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLoss
1414 24080101 - Disclosure - Available For Sale Financial Assets_Details of Availableforsale financial assets (Details) Network

*

*

 http://www.wooribank.com/role/AvailableForSaleFinancialAssetsDetailsOfAvailableForSaleFinancialAssetsDetails
1415 Schedule of available for sale securities [Table] Table

*

*

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1434 24090101 - Disclosure - Held To Maturity Financial Assets_Details of held to maturity financial assets (Details) Network

*

*

 http://www.wooribank.com/role/HeldToMaturityFinancialAssetsDetailsOfHeldToMaturityFinancialAssetsDetails
1435 Schedule of held to maturity securities [Table] Table

*

*

 us-gaap:ScheduleOfHeldToMaturitySecuritiesTable
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1449 24100101 - Disclosure - Loans And Receivables Details of loans and receivables (Details) Network

*

*

 http://www.wooribank.com/role/LoansAndReceivablesDetailsOfLoansAndReceivablesDetails
1450 Implied Table Table

*

*

 implied:Table
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1453 Loans Concept (Monetary) As Of Debit ifrs-full:LoansAndAdvancesToCustomers
1454 Other receivables Concept (Monetary) As Of Debit ifrs-full:OtherFinancialAssets
1455 Total Concept (Monetary) As Of Debit ifrs-full:LoansAndReceivables
1456 24100201 - Disclosure - Loans And Receivables Details of due from banks (Details) Network

*

*

 http://www.wooribank.com/role/LoansAndReceivablesDetailsOfDueFromBanksDetails
1457 Disclosure of due from financial institutions [Table] Table

*

*

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1477 24100301 - Disclosure - Loans And Receivables Details of restricted due from banks (Details) Network

*

*

 http://www.wooribank.com/role/LoansAndReceivablesDetailsOfRestrictedDueFromBanksDetails
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*

*

 wf:ScheduleOfRestrictedDueFromFinancialInstitutionsTable
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1491 Counterparty Concept (Text/String) For Period wf:DescriptionOfRestrictedDueFromFinancialInstitutionsCounterparty
1492 24100401 - Disclosure - Loans And Receivables Details of Loans (Details) Network

*

*

 http://www.wooribank.com/role/LoansAndReceivablesDetailsOfLoansDetails
1493 Schedule of accounts notes loans and financing receivable [Table] Table

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 us-gaap:ScheduleOfAccountsNotesLoansAndFinancingReceivableTable
1494 Accounts notes loans and financing receivable by receivable type [Axis] Axis us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
1495 Receivable type [Domain] Member us-gaap:ReceivableTypeDomain
1496 Loans in local currency Member wf:LoansInKoreanWonMember
1497 Loans in foreign currencies Member wf:LoansInForeignCurrenciesMember
1498 Domestic banker’s letter of credit Member wf:DomesticImportUsanceBillsMember
1499 Credit card accounts Member us-gaap:CreditCardReceivablesMember
1500 Bills bought in foreign currencies Member wf:BillsBoughtInForeignCurrenciesMember
1501 Bills bought in local currency Member wf:BillsBoughtInKoreanWonMember
1502 Factoring receivables Member wf:FactoredReceivablesMember
1503 Advances for customers on guarantees Member wf:AdvancesForCustomersOnGuaranteesMember
1504 Privately placed bonds Member wf:PrivatePlacementCorporateBondsMember
1505 Securitized loans Member us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember
1506 Call loans Member wf:CallLoansMember
1507 Bonds purchased under resale agreements Member wf:ReverseRepurchaseagreementsMember
1508 Loan origination costs and fees Member wf:DeferredLoanOriginationCostsAndFeesMember
1509 Others Member wf:LoansOthersMember
1510 Carrying amount accumulated depreciation amortisation and impairment and gross carrying amount [Axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1511 Carrying Amount [Domain] Member ifrs-full:CarryingAmountMember
1512 Gross carrying amount [Member] Member ifrs-full:GrossCarryingAmountMember
1513 Present value discount Member wf:PresentValueDiscountMember
1514 Allowance for credit losses Member ifrs-full:AccumulatedImpairmentMember
1515 Disclosure of loans other than banks [Line Items] LineItems wf:DisclosureOfLoansOtherThanBanksLineItems
1516 Total Concept (Monetary) As Of Debit wf:LoansOtherThanBanks
1517 24100501 - Disclosure - Loans And Receivables Details of Other Receivables (Details) Network

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*

 http://www.wooribank.com/role/LoansAndReceivablesDetailsOfOtherReceivablesDetails
1518 Other financial assets [Table] Table

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*

 wf:OtherFinancialAssetsTable
1519 Types of other financial assets [Axis] Axis wf:TypesOfOtherFinancialAssetsAxis
1520 Other financial [Domain] Member wf:OtherFinancialMember
1521 CMA accounts Member wf:CmaAccountsMember
1522 Receivables Member wf:OtherReceivablesMember
1523 Accrued income Member us-gaap:AccruedIncomeReceivableMember
1524 Telex and telephone subscription rights and refundable deposits Member wf:TelexAndTelephoneSubscriptionRightsAndGuaranteeDepositsMember
1525 Other debtors Member wf:OtherFinancialAssetsMember
1526 Carrying amount accumulated depreciation amortisation and impairment and gross carrying amount [Axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1527 Carrying Amount [Domain] Member ifrs-full:CarryingAmountMember
1528 Gross carrying amount [Member] Member ifrs-full:GrossCarryingAmountMember
1529 Allowance for credit losses Member ifrs-full:AccumulatedImpairmentMember
1530 Disclosure of other financial assets [Line Items] LineItems wf:DisclosureOfOtherFinancialAssetsLineItems
1531 Other receivables Concept (Monetary) As Of Debit ifrs-full:OtherFinancialAssets
1532 24100601 - Disclosure - Loans And Receivables Changes in allowance for probable credit losses on loans and receivables (Details) Network

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*

 http://www.wooribank.com/role/LoansAndReceivablesChangesInAllowanceForProbableCreditLossesOnLoansAndReceivablesDetails
1533 Changes in allowance account for credit losses of financial assets [Table] Table

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 wf:ChangesInAllowanceAccountForCreditLossesOfFinancialAssetsTable
1534 Types of customers [Axis] Axis ifrs-full:TypesOfCustomersAxis
1535 Types of customers [Domain] Member ifrs-full:TypesOfCustomersMember
1536 Consumers Member ifrs-full:ConsumerLoansMember
1537 Corporates Member ifrs-full:CorporateLoansMember
1538 Credit card Member us-gaap:CreditCardReceivablesMember
1539 Others Member wf:OtherCustomersMember
1540 Reconciliation of changes in allowance account for credit losses of financial assets [Line Items] LineItems wf:ReconciliationOfChangesInAllowanceAccountForCreditLossesOfFinancialAssetsLineItems
1541 Beginning balance Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
1542 Changes in allowance account for credit losses of financial assets [Abstract] Abstract ifrs-full:ChangesInAllowanceAccountForCreditLossesOfFinancialAssetsAbstract
1543 Net provision Concept (Monetary) For Period ifrs-full:AdditionalAllowanceRecognisedInProfitOrLossAllowanceAccountForCreditLossesOfFinancialAssets
1544 Recoveries of written-off loans Concept (Monetary) For Period ifrs-full:ReversalAllowanceAccountForCreditLossesOfFinancialAssets
1545 Charge-off Concept (Monetary) For Period Debit ifrs-full:UtilisationAllowanceAccountForCreditLossesOfFinancialAssets
1546 Sales of loans and receivables Concept (Monetary) For Period Credit wf:IncreaseDecreaseThroughSalesOrRepurchaseAllowanceAccountForCreditLossesOfFinancialAssets
1547 Unwinding effect Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughAdjustmentsArisingFromPassageOfTimeAllowanceAccountForCreditLossesOfFinancialAssets
1548 Others Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughOtherChangesAllowanceAccountForCreditLossesOfFinancialAssets
1549 Ending balance Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
1550 24110201 - Disclosure - Fair Value Of Financial Assets And Liabilities Fair value hierarchy of financial assets and liabilities measured at fair value (Details) Network

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 http://www.wooribank.com/role/FairValueOfFinancialAssetsAndLiabilitiesFairValueHierarchyOfFinancialAssetsAndLiabilitiesMeasuredAtFairValueDetails
1551 Disclosure of fair value measurement of financial instruments [Table] Table

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*

 wf:DisclosureOfFairValueMeasurementOfFinancialInstrumentsTable
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1553 Balance sheet location [Domain] Member us-gaap:BalanceSheetLocationDomain
1554 Financial assets Member ifrs-full:FinancialAssetsCategoryMember
1555 Financial assets at FVTPL Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
1556 Financial assets held for trading Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingCategoryMember
1557 Deposits Member wf:DepositsOfFinancialAssetsHeldForTradingMember
1558 Debt securities Member wf:DebtSecuritiesOfFinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingMember
1559 Equity securities Member wf:EquitySecuritiesOfFinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingMember
1560 Beneficiary certificates Member wf:BeneficiaryCertificatesOfFinancialAssetsHeldForTradingMember
1561 Loaned securities Member wf:SecuritiesLendingOfFinancialAssetsHeldForTradingMember
1562 Derivative assets Member wf:DerivativeFinancialAssetsHeldForTradingMember
1563 Financial assets designated at FVTPL Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossDesignatedUponInitialRecognitionCategoryMember
1564 Debt securities Member wf:DebtSecuritiesOfFinancialAssetsAtFairValueThroughProfitOrLossDesignatedUponInitialRecognitionMember
1565 Equity securities Member wf:EquitySecuritiesOfFinancialAssetsAtFairValueThroughProfitOrLossDesignatedUponInitialRecognitionMember
1566 AFS financial assets Member ifrs-full:FinancialAssetsAvailableforsaleCategoryMember
1567 Debt securities Member wf:DebtSecuritiesOfFinancialAssetsAvailableforsaleMember
1568 Equity securities Member wf:EquitySecuritiesOfFinancialAssetsAvailableforsaleMember
1569 Beneficiary certificates Member wf:BeneficiaryCertificatesOfFinancialAssetsAvailableforsaleMember
1570 Securities loaned Member wf:SecuritiesLendingOfFinancialAssetsAvailableforsaleMember
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1572 Financial liabilities Member ifrs-full:FinancialLiabilitiesCategoryMember
1573 Financial liabilities held for trading Member ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossThatMeetDefinitionOfHeldForTradingCategoryMember
1574 Deposits Member wf:DepositsFromCustomersOfFinancialLiabilitiesHeldForTradingMember
1575 Derivative liabilities Member wf:DerivativeFinancialLiabilitiesHeldForTradingMember
1576 Financial liabilities designated at FVTPL Member ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossDesignatedUponInitialRecognitionCategoryMember
1577 Equity-linked securities Member wf:EquityLinkedSecuritiesOfFinancialLiabilitiesAtFairValueThroughProfitOrLossDesignatedUponInitialRecognitionMember
1578 Debentures Member wf:DebenturesOfFinancialLiabilitiesAtFairValueThroughProfitOrLossDesignatedUponInitialRecognitionMember
1579 Derivative Liabilities Member wf:DerivativeFinancialLiabilitiesHeldForHedgingMember
1580 Levels of fair value hierarchy [Axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
1581 All levels of fair value hierarchy [Domain] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
1582 Level 1 Member ifrs-full:Level1OfFairValueHierarchyMember
1583 Level 2 Member ifrs-full:Level2OfFairValueHierarchyMember
1584 Level 3 Member ifrs-full:Level3OfFairValueHierarchyMember
1585 Fair value of financial instruments measured at fair value [Line Items] LineItems wf:FairValueOfFinancialInstrumentsMeasuredAtFairValueLineItems
1586 Description of level of fair value hierarchy within which fair value measurement is categorised Concept (Text/String) For Period ifrs-full:DescriptionOfLevelOfFairValueHierarchyWithinWhichFairValueMeasurementIsCategorised
1587 Financial assets at fair value through profit or loss [Abstract] Abstract ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossAbstract
1588 Financial assets held for trading Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading
1589 Financial assets designed at FVTPL Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossDesignatedAsUponInitialRecognition
1590 Financial assets at fair value through profit or loss Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLoss
1591 Available-for-sale financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAvailableforsale
1592 Derivative financial assets Concept (Monetary) As Of Debit ifrs-full:DerivativeFinancialAssetsHeldForHedging
1593 Total Concept (Monetary) As Of Debit wf:FinancialAssetsMeasuredAtFairValue
1594 Financial liabilities at fair value through profit or loss [Abstract] Abstract ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossAbstract
1595 Financial liabilities held for trading Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading
1596 Financial liabilities designated at FVTPL Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossDesignatedAsUponInitialRecognition
1597 Financial liabilities at fair value through profit or loss Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLoss
1598 Derivative financial liabilities Concept (Monetary) As Of Credit ifrs-full:DerivativeFinancialLiabilitiesHeldForHedging
1599 Total Concept (Monetary) As Of Credit wf:FinancialLiabilitiesMeasuredAtFairValue
1600 Transfers out of level1 into level2 of fair value hierarchy assets Concept (Monetary) For Period ifrs-full:TransfersOutOfLevel1IntoLevel2OfFairValueHierarchyAssets
1601 Description of reasons for transfers out of level1 into level2 of fair value hierarchy assets Concept (Text/String) For Period ifrs-full:DescriptionOfReasonsForTransfersOutOfLevel1IntoLevel2OfFairValueHierarchyAssets
1602 Transfers out of level2 into level1 of fair value hierarchy assets Concept (Monetary) For Period ifrs-full:TransfersOutOfLevel2IntoLevel1OfFairValueHierarchyAssets
1603 Description of reasons for transfers out of level2 into level1 of fair value hierarchy assets Concept (Text/String) For Period ifrs-full:DescriptionOfReasonsForTransfersOutOfLevel2IntoLevel1OfFairValueHierarchyAssets
1604 Transfers out of level1 into level2 of fair value hierarchy liabilities Concept (Monetary) For Period ifrs-full:TransfersOutOfLevel1IntoLevel2OfFairValueHierarchyLiabilities
1605 Description of reasons for transfers out of level1 into level2 of fair value hierarchy liabilities Concept (Text/String) For Period ifrs-full:DescriptionOfReasonsForTransfersOutOfLevel1IntoLevel2OfFairValueHierarchyLiabilities
1606 Transfers out of level2 into level1 of fair value hierarchy liabilities Concept (Monetary) For Period ifrs-full:TransfersOutOfLevel2IntoLevel1OfFairValueHierarchyLiabilities
1607 Description of reasons for transfers out of level2 into level1 of fair value hierarchy liabilities Concept (Text/String) For Period ifrs-full:DescriptionOfReasonsForTransfersOutOfLevel2IntoLevel1OfFairValueHierarchyLiabilities
1608 Description of financial instruments measured at cost Concept (Text/String) For Period wf:DescriptionOfFinancialInstrumentsMeasuredAtCost
1609 Equity securities of financial assets available-for-sale measured at cost Concept (Monetary) As Of Debit wf:EquitySecuritiesOfFinancialAssetsAvailableforsaleMeasuredAtCost
1610 Carrying amount from disposal of financial assets measured at cost Concept (Monetary) As Of Debit wf:CarryingAmountFromDisposalOfFinancialAssetsMeasuredAtCost
1611 Gains and losses from disposal of financial assets measured at cost Concept (Monetary) For Period Credit wf:GainsAndLossesFromDisposalOfFinancialAssetsMeasuredAtCost
1612 Description of valuation processes used in fair value measurement assets Concept (Text/String) For Period ifrs-full:DescriptionOfValuationProcessesUsedInFairValueMeasurementAssets
1613 Description of valuation processes used in fair value measurement liabilities Concept (Text/String) For Period ifrs-full:DescriptionOfValuationProcessesUsedInFairValueMeasurementLiabilities
1614 Fair value measurement methods Concept (Text/String) For Period ifrs-full:DescriptionOfValuationTechniquesUsedInFairValueMeasurementAssets
1615 Fair value measurement methods Concept (Text/String) For Period ifrs-full:DescriptionOfValuationTechniquesUsedInFairValueMeasurementLiabilities
1616 Alternative assumptions Concept (Text/String) For Period ifrs-full:DescriptionOfInputsUsedInFairValueMeasurementAssets
1617 Alternative assumptions Concept (Text/String) For Period ifrs-full:DescriptionOfInputsUsedInFairValueMeasurementLiabilities
1618 24110301 - Disclosure - Fair Value Of Financial Assets And Liabilities financial assets and liabilities classified into level three (Details) Network

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 http://www.wooribank.com/role/FairValueOfFinancialAssetsAndLiabilitiesFinancialAssetsAndLiabilitiesClassifiedIntoLevelThreeDetails
1619 Disclosure of financial assets and liabilities classified level3 of fair value hierarchy [Table] Table

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*

 wf:DisclosureOfFinancialAssetsAndLiabilitiesClassifiedLevel3OfFairValueHierarchyTable
1620 Balance sheet location [Axis] Axis us-gaap:BalanceSheetLocationAxis
1621 Balance sheet location [Domain] Member us-gaap:BalanceSheetLocationDomain
1622 Financial assets Member ifrs-full:FinancialAssetsCategoryMember
1623 Financial assets at FVTPL Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
1624 Financial assets held for trading Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingCategoryMember
1625 Derivative assets Member wf:DerivativeFinancialAssetsHeldForTradingMember
1626 Financial assets designated at FVTPL Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossDesignatedUponInitialRecognitionCategoryMember
1627 Equity-linked securities Member wf:EquityLinkedSecuritiesOfFinancialAssetsAtFairValueThroughProfitOrLossDesignatedUponInitialRecognitionMember
1628 Debt securities Member wf:DebtSecuritiesOfFinancialAssetsAtFairValueThroughProfitOrLossDesignatedUponInitialRecognitionMember
1629 Equity securities Member wf:EquitySecuritiesOfFinancialAssetsAtFairValueThroughProfitOrLossDesignatedUponInitialRecognitionMember
1630 AFS financial assets Member ifrs-full:FinancialAssetsAvailableforsaleCategoryMember
1631 Equity securities Member wf:EquitySecuritiesOfFinancialAssetsAvailableforsaleMember
1632 Beneficiary certificates Member wf:BeneficiaryCertificatesOfFinancialAssetsAvailableforsaleMember
1633 Others Member wf:FinancialAssetsAvailableforsaleOthersMember
1634 Derivative assets Member wf:DerivativeFinancialAssetsHeldForHedgingMember
1635 Financial liabilities Member ifrs-full:FinancialLiabilitiesCategoryMember
1636 Financial liabilities held for trading Member ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossThatMeetDefinitionOfHeldForTradingCategoryMember
1637 Derivative liabilities Member wf:DerivativeFinancialLiabilitiesHeldForTradingMember
1638 Financial liabilities designated at FVTPL Member ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossDesignatedUponInitialRecognitionCategoryMember
1639 Equity-linked securities Member wf:EquityLinkedSecuritiesOfFinancialLiabilitiesAtFairValueThroughProfitOrLossDesignatedUponInitialRecognitionMember
1640 Range [Axis] Axis ifrs-full:RangeAxis
1641 Ranges [Domain] Member ifrs-full:RangesMember
1642 Bottom of range [Member] Member ifrs-full:BottomOfRangeMember
1643 Top of range [Member] Member ifrs-full:TopOfRangeMember
1644 Disclosure of financial assets and liabilities classified level3 of fair value hierarchy [Line Items] LineItems wf:DisclosureOfFinancialAssetsAndLiabilitiesClassifiedLevel3OfFairValueHierarchyLineItems
1645 Disclosure of significant unobservable inputs used in fair value measurement of financial instruments [Abstract] Abstract wf:DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfFinancialInstrumentsAbstract
1646 Fair value measurement technique Concept (Text/String) For Period wf:DescriptionOfValuationTechniquesUsedInFairValueMeasurementForFinancialInstrumentsClassifiedIntoLevel3OfFairValueHierarchy
1647 Input variable Concept (Text/String) For Period wf:DescriptionOfUnobservableInputsUsedInFairValueMeasurementFinancialInstruments
1648 Range Concept (Percent) For Period wf:HistoricalVolatilityForSharesUnobservableInputsFinancialInstruments
1649 Range Concept (Percent) For Period wf:CorrelationBetweenUnderlyingAssetsForUnobservableInputsFinancialInstruments
1650 Range Concept (Percent) For Period wf:GrowthRateForUnobservableInputsFinancialInstruments
1651 Range Concept (Percent) For Period wf:VolatilityOfRealEstateSalePriceUnobservableInputsFinancialInstruments
1652 Range Concept (Percent) For Period wf:DiscountRateOfLeaseCashFlowAndOthersUnobservableInputsFinancialInstruments
1653 Impact of changes in significant unobservable inputs on fair value measurement Concept (Text/String) For Period wf:DescriptionOfInterrelationshipsBetweenUnobservableInputsAndOfHowTheyMightMagnifyOrMitigateEffectOfChangesInUnobservableInputsOnFairValueMeasurementFinancialInstruments
1654 Reconciliation of changes in level3 of fair value hierarchy [Abstract] Abstract wf:ReconciliationOfChangesInLevel3OfFairValueHierarchyAbstract
1655 Beginning balance Concept (Monetary) As Of Debit wf:FinancialAssetsLiabilitiesMeasuredAtFairValueLevel3OfFairValueHierarchy
1656 Changes in financial assets liabilities measured at fair value level3 of the fair value hierarchy [Abstract] Abstract wf:ChangesInFinancialAssetsLiabilitiesMeasuredAtFairValueLevel3OfTheFairValueHierarchyAbstract
1657 Net Income(loss) Concept (Monetary) For Period Credit wf:GainsLossesRecognisedInProfitOrLossFairValueMeasurementFinancialInstrumentsClassifiedIntoLevel3OfFariValueHierarchy
1658 Other comprehensive income(loss) Concept (Monetary) For Period Credit wf:GainsLossesRecognisedInOtherComprehensiveIncomeFairValueMeasurementFinancialInstrumentsClassifiedIntoLevel3OfFariValueHierarchy
1659 Purchases Issuances Concept (Monetary) For Period Debit wf:IncreaseOfLevel3OfFairValueHierarchyFinancialInstrumentsDueToPurchaseOrIssuance
1660 Disposals Settlements Concept (Monetary) For Period Credit wf:DecreaseOfLevel3OfFairValueHierarchyFinancialInstrumentsDueToDisposalsOrSettlements
1661 Transfer to or from level 3 Concept (Monetary) For Period Credit wf:TransferFromToLevel3OfFairValueHierarchyFinancialInstruments
1662 Ending balance Concept (Monetary) As Of Debit wf:FinancialAssetsLiabilitiesMeasuredAtFairValueLevel3OfFairValueHierarchy
1663 Gains losses from financial assets and liabilities classified as level3 that the group holds as at the end of the year Concept (Monetary) For Period Credit wf:GainsLossesFromFinancialAssetsAndLiabilitiesClassifiedAsLevel3ThatTheGroupHoldsAsAtTheEndOfTheYear
1664 Description of reasons for transfers into level3 of fair value hierarchy assets Concept (Text/String) For Period ifrs-full:DescriptionOfReasonsForTransfersIntoLevel3OfFairValueHierarchyAssets
1665 Description of reasons for transfers out of level3 of fair value hierarchy assets Concept (Text/String) For Period ifrs-full:DescriptionOfReasonsForTransfersOutOfLevel3OfFairValueHierarchyAssets
1666 Description of reasons for transfers into level3 of fair value hierarchy liabilities Concept (Text/String) For Period ifrs-full:DescriptionOfReasonsForTransfersIntoLevel3OfFairValueHierarchyLiabilities
1667 Description of reasons for transfers out of level3 of fair value hierarchy liabilities Concept (Text/String) For Period ifrs-full:DescriptionOfReasonsForTransfersOutOfLevel3OfFairValueHierarchyLiabilities
1668 Disclosure of sensitivity analysis for unobsevable inputs level3 of fair value hierarchy financial instruments [Abstract] Abstract wf:DisclosureOfSensitivityAnalysisForUnobsevableInputsLevel3OfFairValueHierarchyFinancialInstrumentsAbstract
1669 Changes in unobservable inputs financial assets liabilities recognition in profit or loss [Abstract] Abstract wf:ChangesInUnobservableInputsFinancialAssetsLiabilitiesRecognitionInProfitOrLossAbstract
1670 Favorable changes in unobservable inputs in net income(loss) Concept (Monetary) For Period Credit wf:IncreaseOfGainsLossesRecognisedInProfitOrLossOfFairValueMeasurementDueToChangeInOneOrMoreUnobservableInputsToReflectReasonablyPossibleAlternativeAssumptionsFinancialInstruments
1671 Unfavorable changes in unobservable inputs in net income(loss) Concept (Monetary) For Period Credit wf:DecreaseOfGainsLossesRecognisedInProfitOrLossOfFairValueMeasurementDueToChangeInOneOrMoreUnobservableInputsToReflectReasonablyPossibleAlternativeAssumptionsFinancialInstruments
1672 Changes in unobservable inputs financial assets liabilities recognition in other comprehensive income [Abstract] Abstract wf:ChangesInUnobservableInputsFinancialAssetsLiabilitiesRecognitionInOtherComprehensiveIncomeAbstract
1673 Favorable changes in unobservable inputs in other comprehensive income(loss) Concept (Monetary) For Period Credit wf:IncreaseOfGainsLossesRecognisedInOtherComprehensiveIncomeOfFairValueMeasurementDueToChangeInOneOrMoreUnobservableInputsToReflectReasonablyPossibleAlternativeAssumptionsFinancialInstruments
1674 Unfavorable changes in unobservable inputs in other comprehensive income(loss) Concept (Monetary) For Period Credit wf:DecreaseOfGainsLossesRecognisedInOtherComprehensiveIncomeOfFairValueMeasurementDueToChangeInOneOrMoreUnobservableInputsToReflectReasonablyPossibleAlternativeAssumptionsFinancialInstruments
1675 Unfavorable changes in unobservable inputs in other comprehensive income Concept (Text/String) For Period wf:DescriptionOfSensitivityAnalysisForUnobsevableInputsLevel3OfFairValueHierarchyFinancialInstruments
1676 24110501 - Disclosure - Fair Value Of Financial Assets And Liabilities Fair value and carrying amount of financial assets and liabilities measured at amortized cost (Details) Network

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 http://www.wooribank.com/role/FairValueOfFinancialAssetsAndLiabilitiesFairValueAndCarryingAmountOfFinancialAssetsAndLiabilitiesMeasuredAtAmortizedCostDetails
1677 Disclosure of financial assets liabilities classified as measured at amortised cost [Table] Table

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 wf:DisclosureOfFinancialAssetsLiabilitiesClassifiedAsMeasuredAtAmortisedCostTable
1678 Balance sheet location [Axis] Axis us-gaap:BalanceSheetLocationAxis
1679 Balance sheet location [Domain] Member us-gaap:BalanceSheetLocationDomain
1680 Financial assets Member ifrs-full:FinancialAssetsAtAmortisedCostCategoryMember
1681 HTM financial assets Member ifrs-full:HeldtomaturityInvestmentsCategoryMember
1682 Loans and receivables Member ifrs-full:LoansAndReceivablesCategoryMember
1683 Financial liabilities Member ifrs-full:FinancialLiabilitiesAtAmortisedCostCategoryMember
1684 Deposits due to customers Member us-gaap:DepositsMember
1685 Borrowings Member wf:DebtsMember
1686 Debentures Member wf:DebenturesMember
1687 Other financial liabilities Member wf:OtherFinancialLiabilitiesMember
1688 Levels of fair value hierarchy [Axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
1689 All levels of fair value hierarchy [Domain] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
1690 Level 1 Member ifrs-full:Level1OfFairValueHierarchyMember
1691 Level 2 Member ifrs-full:Level2OfFairValueHierarchyMember
1692 Level 3 Member ifrs-full:Level3OfFairValueHierarchyMember
1693 Financial assets liabilities measured at amortised [Line Items] LineItems wf:FinancialAssetsLiabilitiesMeasuredAtAmortisedLineItems
1694 Fair value of financial assets liabilities measured at amortised cost [Abstract] Abstract wf:FairValueOfFinancialAssetsLiabilitiesMeasuredAtAmortisedCostAbstract
1695 Held-to-maturity financial assets Concept (Monetary) As Of Debit us-gaap:HeldToMaturitySecuritiesFairValue
1696 Loans and receivables Concept (Monetary) As Of Debit wf:LoansAndReceivablesFairValue
1697 Deposits due to customers Concept (Monetary) As Of Credit us-gaap:DepositsFairValueDisclosure
1698 Borrowings Concept (Monetary) As Of Debit wf:BorrowingsFairValue
1699 Debentures Concept (Monetary) As Of Debit wf:NotesAndDebenturesIssuedFairValue
1700 Other financial liabilities Concept (Monetary) As Of Credit us-gaap:FinancialLiabilitiesFairValueDisclosure
1701 Carrying value of financial assets liabilities measured at amortised cost [Abstract] Abstract wf:CarryingValueOfFinancialAssetsLiabilitiesMeasuredAtAmortisedCostAbstract
1702 Held-to-maturity financial assets Concept (Monetary) As Of Debit ifrs-full:HeldtomaturityInvestments
1703 Loans and receivables Concept (Monetary) As Of Debit ifrs-full:LoansAndReceivables
1704 Deposits due to customers Concept (Monetary) As Of Credit ifrs-full:DepositsFromCustomers
1705 Borrowings Concept (Monetary) As Of Credit ifrs-full:Borrowings
1706 Debentures Concept (Monetary) As Of Credit ifrs-full:NotesAndDebenturesIssued
1707 Other financial liabilities Concept (Monetary) As Of Credit ifrs-full:OtherFinancialLiabilities
1708 Disclosure of financial assets liabilities measured at amortised [Abstract] Abstract wf:DisclosureOfFinancialAssetsLiabilitiesMeasuredAtAmortisedAbstract
1709 Fair value measurement technique Concept (Text/String) For Period wf:DescriptionOfValuationTechniquesUsedInFairValueMeasurementFinancialAssetsLiabilitiesMeasuredAtAmortisedCost
1710 Input variables Concept (Text/String) For Period wf:DescriptionOfInputsUsedInFairValueMeasurementFinancialAssetsLiabilitiesMeasuredAtAmortisedCost
1711 24120101 - Disclosure - Derecognition And Offset Of Financial Instruments Transferred financial assets that are derecognized in their entirety (Details) Network

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 http://www.wooribank.com/role/DerecognitionAndOffsetOfFinancialInstrumentsTransferredFinancialAssetsThatAreDerecognizedInTheirEntiretyDetails
1712 Disclosure of continuing involvement in derecognised financial assets [Table] Table

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 ifrs-full:DisclosureOfContinuingInvolvementInDerecognisedFinancialAssetsTable
1713 Continuing involvement in derecognised financial assets by type of instrument [Axis] Axis ifrs-full:ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentAxis
1714 Types of instrument [Domain] Member ifrs-full:TypesOfInstrumentMember
1715 Conditional disposal of loans to KAMCO Member wf:ConditionalDisposalOfLoansMember
1716 KAMCO Member wf:KamcoMember
1717 Disclosure of continuing involvement in derecognised financial assets [Line Items] LineItems ifrs-full:DisclosureOfContinuingInvolvementInDerecognisedFinancialAssetsLineItems
1718 Classification Concept (Text/String) For Period wf:TypesOfContinuingInvolvement
1719 Carrying amount of Continuing involvement Asset Concept (Monetary) As Of Debit ifrs-full:RecognisedAssetsRepresentingContinuingInvolvementInDerecognisedFinancialAssets
1720 Carrying amount of Continuing involvement Liability Concept (Monetary) As Of Credit ifrs-full:RecognisedLiabilitiesRepresentingContinuingInvolvementInDerecognisedFinancialAssets
1721 Fair value amount of Continuing involvement Asset Concept (Monetary) As Of Debit ifrs-full:FairValueOfAssetsRepresentingContinuingInvolvementInDerecognisedFinancialAssets
1722 Fair value amount of Continuing involvement Liability Concept (Monetary) As Of Credit ifrs-full:FairValueOfLiabilitiesRepresentingContinuingInvolvementInDerecognisedFinancialAssets
1723 Maximum exposure to loss Concept (Monetary) As Of ifrs-full:MaximumExposureToLossFromContinuingInvolvement
1724 Line items of recognised assets and liabilities representing continuing involvement in derecognised financial assets Concept (Text/String) For Period ifrs-full:LineItemsOfRecognisedAssetsAndLiabilitiesRepresentingContinuingInvolvementInDerecognisedFinancialAssets
1725 24120102 - Disclosure - Derecognition And Offset Of Financial Instruments Transferred financial assets that are not derecognized in their entirety (Details) Network

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 http://www.wooribank.com/role/DerecognitionAndOffsetOfFinancialInstrumentsTransferredFinancialAssetsThatAreNotDerecognizedInTheirEntiretyDetails
1726 Disclosure of financial assets transferred during period which do not qualify for derecognition [Table] Table

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 ifrs-full:DisclosureOfFinancialAssetsTransferredDuringPeriodWhichDoNotQualifyForDerecognitionTable
1727 Financial assets which do not qualify for derecognition [Axis] Axis ifrs-full:FinancialAssetsWhichDoNotQualifyForDerecognitionAxis
1728 Financial assets which do not qualify for derecognition [Domain] Member ifrs-full:FinancialAssetsWhichDoNotQualifyForDerecognitionMember
1729 Disposal of securities under repurchase agreements Member wf:RepurchaseagreementMember
1730 AFS financial assets Member wf:FinancialAssetsAvailableforsaleRepurchaseAgreementCategoryMember
1731 HTM financial assets Member ifrs-full:HeldtomaturityInvestmentsCategoryMember
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1733 Financial assets at FVTPL Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
1734 Equity securities- listed stock Member ifrs-full:TradingEquitySecuritiesMember
1735 AFS financial assets Member ifrs-full:FinancialAssetsAvailableforsaleCategoryMember
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1740 Korea Securities Depository and others Member wf:KoreaSecuritiesDepositoryAndOthersMember
1741 Disclosure of financial assets transferred during period which do not qualify for derecognition [Line Items] LineItems ifrs-full:DisclosureOfFinancialAssetsTransferredDuringPeriodWhichDoNotQualifyForDerecognitionLineItems
1742 Nature of financial assets transferred during period which do not qualify for derecognition Concept (Text/String) For Period ifrs-full:NatureOfFinancialAssetsTransferredDuringPeriodWhichDoNotQualifyForDerecognition
1743 Assets that entity continues to recognise Concept (Monetary) As Of Debit ifrs-full:AssetsThatEntityContinuesToRecognise
1744 Associated liabilities that entity continues to recognise Concept (Monetary) As Of Credit ifrs-full:AssociatedLiabilitiesThatEntityContinuesToRecognise
1745 24120201 - Disclosure - Derecognition And Offset Of Financial Instruments Financial assets subject to offset enforceable master netting agreements or similar agreements (Details) Network

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*

 http://www.wooribank.com/role/DerecognitionAndOffsetOfFinancialInstrumentsFinancialAssetsSubjectToOffsetEnforceableMasterNettingAgreementsOrSimilarAgreementsDetails
1746 Disclosure of offsetting of financial assets [Table] Table

*

*

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1752 Bonds purchased under resale agreements Member wf:ReverseRepurchaseAgreementsMember
1753 Domestic exchanges receivable Member wf:DomesticExchangeSettlementDebitsMember
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1755 Net financial assets subject to offsetting enforceable master netting arrangements or similar agreements [Abstract] Abstract ifrs-full:NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsAbstract
1756 Net financial assets subject to offsetting enforceable master netting arrangements or similar agreements in statement of financial position [Abstract] Abstract ifrs-full:NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPositionAbstract
1757 Gross amounts of recognized financial assets Concept (Monetary) As Of Debit ifrs-full:GrossFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1758 Gross amounts of recognized financial assets set off Concept (Monetary) As Of Credit ifrs-full:GrossFinancialLiabilitiesSetOffAgainstFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1759 Net amounts of financial assets presented Concept (Monetary) As Of Debit ifrs-full:NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition
1760 Related amounts not set off in the consolidated statement of financial position Abstract ifrs-full:AmountsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialAssetsAbstract
1761 Netting agreements and others Concept (Monetary) As Of Credit ifrs-full:FinancialInstrumentsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialAssets
1762 Cash collateral received Concept (Monetary) As Of Credit ifrs-full:CashCollateralReceivedSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialAssets
1763 Net amounts Concept (Monetary) As Of Debit ifrs-full:NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1764 Description of rights of setoff associated with financial assets subject to enforceable master netting arrangement or similar agreement Concept (Text/String) For Period ifrs-full:DescriptionOfRightsOfSetoffAssociatedWithFinancialAssetsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreement
1765 24120202 - Disclosure - Derecognition And Offset Of Financial Instruments Financial liabilities subject to offset enforceable master netting agreements or similar agreements (Details) Network

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 http://www.wooribank.com/role/DerecognitionAndOffsetOfFinancialInstrumentsFinancialLiabilitiesSubjectToOffsetEnforceableMasterNettingAgreementsOrSimilarAgreementsDetails
1766 Disclosure of offsetting of financial liabilities [Table] Table

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*

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1771 Derivative financial instruments liabilities and payable spot exchange [Member] Member wf:DerivativeFinancialInstrumentsLiabilitiesAndPayableSpotExchangeMember
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1773 Domestic exchange payable Member wf:DomesticExchangeSettlementCreditsMember
1774 Disclosure of offsetting of financial liabilities [Line Items] LineItems ifrs-full:DisclosureOfOffsettingOfFinancialLiabilitiesLineItems
1775 Net financial liabilities subject to offsetting enforceable master netting arrangements or similar agreements [Abstract] Abstract ifrs-full:NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsAbstract
1776 Net financial liabilities subject to offsetting enforceable master netting arrangements or similar agreements in statement of financial position [Abstract] Abstract ifrs-full:NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPositionAbstract
1777 Gross amounts of recognized financial liabilities Concept (Monetary) As Of Credit ifrs-full:GrossFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1778 Gross amounts of recognized financial liabilities set off Concept (Monetary) As Of Debit ifrs-full:GrossFinancialAssetsSetOffAgainstFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1779 Net amounts of financial liabilities presented Concept (Monetary) As Of Credit ifrs-full:NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition
1780 Related amounts not set off in the consolidated statement of financial position Abstract ifrs-full:AmountsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialLiabilitiesAbstract
1781 Netting agreements and others Concept (Monetary) As Of Debit ifrs-full:FinancialInstrumentsSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialLiabilities
1782 Cash collateral pledged Concept (Monetary) As Of Debit ifrs-full:CashCollateralPledgedSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialLiabilities
1783 Net amounts Concept (Monetary) As Of Credit ifrs-full:NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1784 Description of rights of setoff associated with financial liabilities subject to enforceable master netting arrangement or similar agreement Concept (Text/String) For Period ifrs-full:DescriptionOfRightsOfSetoffAssociatedWithFinancialLiabilitiesSubjectToEnforceableMasterNettingArrangementOrSimilarAgreement
1785 24130101 - Disclosure - Investment In Joint Ventures And Associates Investments in joint ventures and associates accounted for using the equity method of accounting (Details) Network

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1786 Disclosure of investments in associates and joint ventures [Table] Table

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1787 Investments in associates and joint ventures [Axis] Axis wf:InvestmentsInAssociatesAndJointVenturesAxis
1788 Entitys total for associates and joint ventures [Domain] Member wf:EntitysTotalForAssociatesAndJointVenturesMember
1789 Woori Bank and Woori Private Equity Asset Management Co Ltd Member wf:WooriBankAndWooriPrivateEquityAssetManagementCoLtdMember
1790 Woori Blackstone Korea Opportunity Private Equity Fund No.1 Member wf:WooriBlackstoneKoreaOpportunityPrivateEquityFundNoOneMember
1791 Woori bank Member wf:WooriBankMember
1792 Kumho Tire Co Inc Member wf:KumhoTireCoIncMember
1793 Woori Service Networks Co Ltd Member wf:WooriServiceNetworksCoLtdMember
1794 Korea Credit Bureau Co Ltd Member wf:KoreaCreditBureauCoLtdMember
1795 Korea Finance Security Co Ltd Member wf:KoreaFinanceSecurityCoLtdMember
1796 Chin Hung International Inc Member wf:ChinHungInternationalIncMember
1797 Poonglim Industrial Co Ltd Member wf:PoonglimIndustrialCoLtdMember
1798 STX Engine Co Ltd Member wf:STXEngineCoLtdMember
1799 Samho International Co Ltd Member wf:SamHoCoLtdMember
1800 Force TEC Co Ltd Member wf:ForceTECCoLtdMember
1801 STX Corporation Member wf:STXCorporationMember
1802 Saman Corporation Member wf:SamanCorporationMember
1803 Dongwoo C and C Co Ltd Member wf:DongwooCCCoLtdMember
1804 SJCO Co Ltd Member wf:SJCOCoLtdMember
1805 G2 Collection Co Ltd Member wf:GTwoCollectionCoLtdMember
1806 The Base Enterprise Co Ltd Member wf:TheBaseEnterpriseCoLtdMember
1807 Heungjiwon Co Ltd Member wf:HeungjiwonCoLtdMember
1808 Kyesan engineering Co Ltd Member wf:KyesanEngineeringCoLtdMember
1809 Good software lab Co Ltd Member wf:GoodSoftwareLabCoLtdMember
1810 Wongwang Co Ltd Member wf:WongwangCoLtdMember
1811 Sejin construction Co Ltd Member wf:SejinConstructionCoLtdMember
1812 Deokwon food Co Ltd Member wf:DeokwonFoodCoLtdMember
1813 QTS shipping Co Ltd Member wf:QTSShippingCoLtdMember
1814 DAEA SNC Co Ltd Member wf:DAEASncCoLtdMember
1815 ARES TECH Co Ltd Member wf:ARESTECHCoLtdMember
1816 Reading Doctors Co Ltd Member wf:ReadingDoctorsCoLtdMember
1817 PREXCO Co Ltd Member wf:PrexcoCoLtdMember
1818 Hyunwoo International Co Ltd Member wf:HyunwooInternationalCoLtdMember
1819 Jiwon Plating Co Ltd Member wf:JiwonPlatingCoLtdMember
1820 Cultizm Korea LTD Co Ltd Member wf:CultizmKoreaLTDCoLtdMember
1821 Gil Co Ltd Member wf:GilCoLtdMember
1822 Nk Eng Co Ltd Member wf:NkEngCoLtdMember
1823 Woori Growth Partnerships New Technology Private Equity Fund Member wf:WooriGrowthPartnershipsNewTechnologyPrivateEquityFundMember
1824 2016KIF-IMM Woori Bank Technology Venture Fund Member wf:TwentySixteenKIFIMMWooriBankTechnologyVentureFundMember
1825 K BANK Co Ltd Member wf:KBankCoLtdMember
1826 Smart Private Equity Fund No.2 Member wf:SmartPrivateEquityFundNo2Member
1827 Woori Bank-Company K Korea Movie Asset Fund Member wf:WooriBankCompanyKKoreaMovieAssetFundMember
1828 Well to Sea No.3 Private Equity Fund Member wf:WelltoSeaNo3PrivateEquityFundMember
1829 Woori Private Equity Fund Member wf:WooriPrivateEquityFundMember
1830 Woori Renaissance Holdings Inc Member wf:WooriRenaissanceHoldingsIncMember
1831 Woori Private Equity Asset Management Co Ltd Member wf:WooriPrivateEquityAssetManagementCoLtdMember
1832 Woori Columbus First Private Equity Fund Member wf:WooriColumbusFirstPefMember
1833 Woori Investment Bank Co Ltd Member wf:WooriInvestmentBankCoLtdMember
1834 Nomura-Rifa Private Real Estate Investment Trust No.17 Member wf:NomuraRifaPrivateRealEstateInvestmentTrustNo17Member
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1837 Proportion of ownership interest in associates and joint ventures Concept (Percent) For Period wf:ProportionOfOwnershipInterestInAssociatesAndJointVentures
1838 Financial statements as of 2017 Concept (Date) For Period wf:DateOfUsingFinancialStatementsOfAssociatesAndJointVentures
1839 Description of reason why using different reporting date or period for associate Concept (Text/String) For Period wf:DescriptionOfReconciliationUsingDifferentDateOfFinancialStatementsBetweenGroupAndAssociatesAndJointVentures
1840 Description of reasons why presumption that interest of more than twenty per cent in associate is overcome Concept (Text/String) For Period wf:DescriptionOfReasonWhyInterestsMoreThanTwentyPerCentInAssociateAndJointVenturesExcluded
1841 Description of nature of entitys relationship with associate Concept (Text/String) For Period wf:DescriptionOfNatureOfEntitysRelationshipWithAssociateAndJointVentures
1842 Fair value of investments in associates for which there are quoted market prices Concept (Monetary) As Of Debit ifrs-full:FairValueOfInvestmentsInAssociatesWherePriceQuotationsPublished
1843 Unrecognised share of losses of associates Concept (Monetary) For Period Debit ifrs-full:UnrecognisedShareOfLossesOfAssociates
1844 24130201 - Disclosure - Investment In Joint Ventures And Associates Changes in the carrying value of investments in joint ventures and associates accounted for using the equity method of accounting (Details) Network

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1845 Disclosure of changes in investments in associates and joint ventures [Table] Table

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1846 Investments in associates and joint ventures [Axis] Axis wf:InvestmentsInAssociatesAndJointVenturesAxis
1847 Entitys total for associates and joint ventures [Domain] Member wf:EntitysTotalForAssociatesAndJointVenturesMember
1848 Woori Blackstone Korea Opportunity No.1 Private Equity Fund Member wf:WooriBlackstoneKoreaOpportunityPrivateEquityFundNoOneMember
1849 Kumho Tire Co Inc Member wf:KumhoTireCoIncMember
1850 Woori Service Networks Co Ltd Member wf:WooriServiceNetworksCoLtdMember
1851 Korea Credit Bureau Co Ltd Member wf:KoreaCreditBureauCoLtdMember
1852 Korea Finance Security Co Ltd Member wf:KoreaFinanceSecurityCoLtdMember
1853 United PF First corporate financial stability Member wf:UnitedPFFirstStCorporateFinancialStabilityMember
1854 Chin Hung International Inc Member wf:ChinHungInternationalIncMember
1855 Poonglim Industrial Co Ltd Member wf:PoonglimIndustrialCoLtdMember
1856 STX Engine Co Ltd Member wf:STXEngineCoLtdMember
1857 Samho Co Ltd Member wf:SamHoCoLtdMember
1858 STX Corporation Member wf:STXCorporationMember
1859 Osung LST Co Ltd Member wf:OsungLSTCoLtdMember
1860 Saman Corporation Member wf:SamanCorporationMember
1861 K-Growth crowd 2step fund Member wf:KGrowthCrowdTwoStepFundMember
1862 Woori Growth Partnerships New Technology Private Equity Fund Member wf:WooriGrowthPartnershipsNewTechnologyPrivateEquityFundMember
1863 2016KIF-IMM Woori Bank Technology Venture Fund Member wf:TwentySixteenKIFIMMWooriBankTechnologyVentureFundMember
1864 K BANK Co Ltd Member wf:KBankCoLtdMember
1865 Smart Private Equity Fund No.2 Member wf:SmartPrivateEquityFundNo2Member
1866 Woori Bank-Company K Korea Movie Asset Fund Member wf:WooriBankCompanyKKoreaMovieAssetFundMember
1867 Well to Sea No.3 Private Equity Fund Member wf:WelltoSeaNo3PrivateEquityFundMember
1868 Woori Renaissance Holdings Member wf:WooriRenaissanceHoldingsIncMember
1869 Woori Columbus First Private Equity Fund Member wf:WooriColumbusFirstPefMember
1870 Nomura-Rifa Private Real Estate Investment Trust No.17 Member wf:NomuraRifaPrivateRealEstateInvestmentTrustNo17Member
1871 Phoenix Digital Tech Co Ltd Member wf:PhoenixDigitalTechCoLtdMember
1872 Indonesia woori saudara bank Member wf:IndonesiaWooriSaudaraBankMember
1873 Disclosure of changes in investments in associates and joint ventures [Line Items] LineItems wf:DisclosureOfChangesInInvestmentsInAssociatesAndJointVenturesLineItems
1874 Beginning Concept (Monetary) As Of Debit ifrs-full:InvestmentAccountedForUsingEquityMethod
1875 Acquisition cost Concept (Monetary) As Of Debit wf:InvestmentsInAssociatesAndJointVentures
1876 Changes in investments in associates and joint ventures [Abstract] Abstract wf:ChangesInInvestmentsInAssociatesAndJointVenturesAbstract
1877 Share of profits(losses) Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
1878 Acquisition Concept (Monetary) For Period Credit ifrs-full:PurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethod
1879 Disposal and others Concept (Monetary) For Period Debit us-gaap:EquityMethodInvestmentSoldCarryingAmount
1880 Dividends Concept (Monetary) For Period Debit ifrs-full:DividendsReceivedFromInvestmentsAccountedForUsingEquityMethodClassifiedAsInvestingActivities
1881 Change in capital Concept (Monetary) For Period Credit wf:ChangeInCapitalOfInvestmentsInAssociatesAndJointVentures
1882 Impairment Concept (Monetary) For Period Debit wf:ImpairmentLossOfInvestmentsInAssociatesAndJointVentures
1883 Others Concept (Monetary) For Period Credit wf:OtherChangesInInvestmentsInAssociatesAndJointVentures
1884 Ending Concept (Monetary) As Of Debit ifrs-full:InvestmentAccountedForUsingEquityMethod
1885 24130301 - Disclosure - Investment In Joint Ventures And Associates_Financial information relating to investments in joint ventures and associates accounted for using the equity method of accounting (Details) Network

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1886 Equity method investment summarized financial information [Table] Table

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1887 Investments in associates and joint ventures [Axis] Axis wf:InvestmentsInAssociatesAndJointVenturesAxis
1888 Entitys total for associates and joint ventures [Domain] Member wf:EntitysTotalForAssociatesAndJointVenturesMember
1889 Woori Blackstone Korea Opportunity No.1 Private Equity Fund Member wf:WooriBlackstoneKoreaOpportunityPrivateEquityFundNoOneMember
1890 Kumho Tire Co Inc Member wf:KumhoTireCoIncMember
1891 Woori Service Networks Co Ltd Member wf:WooriServiceNetworksCoLtdMember
1892 Korea Credit Bureau Co Ltd Member wf:KoreaCreditBureauCoLtdMember
1893 Korea Finance Security Co Ltd Member wf:KoreaFinanceSecurityCoLtdMember
1894 Chin Hung International Inc Member wf:ChinHungInternationalIncMember
1895 Poonglim Industrial Co Ltd Member wf:PoonglimIndustrialCoLtdMember
1896 STX Engine Co Ltd Member wf:STXEngineCoLtdMember
1897 Samho Co Ltd Member wf:SamHoCoLtdMember
1898 STX Corporation Member wf:STXCorporationMember
1899 Saman Corporation Member wf:SamanCorporationMember
1900 Woori Growth Partnerships New Technology Private Equity Fund Member wf:WooriGrowthPartnershipsNewTechnologyPrivateEquityFundMember
1901 2016KIF-IMM Woori Bank Technology Venture Fund Member wf:TwentySixteenKIFIMMWooriBankTechnologyVentureFundMember
1902 K BANK Co Ltd Member wf:KBankCoLtdMember
1903 Woori Renaissance Holdings Inc Member wf:WooriRenaissanceHoldingsIncMember
1904 Woori Columbus First Private Equity Fund Member wf:WooriColumbusFirstPefMember
1905 Smart Private Equity Fund No.2 Member wf:SmartPrivateEquityFundNo2Member
1906 Woori Bank-Company K Korea Movie Asset Fund Member wf:WooriBankCompanyKKoreaMovieAssetFundMember
1907 Well to Sea No.3 Private Equity Fund Member wf:WelltoSeaNo3PrivateEquityFundMember
1908 Nomura-Rifa Private Real Estate Investment Trust No.17 Member wf:NomuraRifaPrivateRealEstateInvestmentTrustNo17Member
1909 Equity method investment summarized financial information [Line Items] LineItems wf:EquityMethodInvestmentSummarizedFinancialInformationLineItems
1910 Assets Concept (Monetary) As Of Debit us-gaap:EquityMethodInvestmentSummarizedFinancialInformationAssets
1911 Liabilities Concept (Monetary) As Of Credit us-gaap:EquityMethodInvestmentSummarizedFinancialInformationLiabilities
1912 Operating revenue Concept (Monetary) For Period Credit us-gaap:EquityMethodInvestmentSummarizedFinancialInformationIncomeLossFromContinuingOperationsBeforeExtraordinaryItems
1913 Net income(loss) Concept (Monetary) For Period Credit us-gaap:EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss
1914 24130401 - Disclosure - Investment In Joint Ventures And Associates Entities not applied for equity method of accounting with ownership ratio exceeding twenty percent (Details) Network

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1915 Disclosure of entities not applied for equity method of accounting with ownership ratio exceeding twenty percent [Table] Table

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1916 Investments in associates and joint ventures [Axis] Axis wf:InvestmentsInAssociatesAndJointVenturesAxis
1917 Entitys total for associates and joint ventures [Domain] Member wf:EntitysTotalForAssociatesAndJointVenturesMember
1918 Orient Shipyard Co Ltd Member wf:OrientShipyardCoLtdMember
1919 Saenuel Co Ltd Member wf:SaenuelCoLtdMember
1920 E mirae Tech Co Ltd Member wf:EMiraeTechCoLtdMember
1921 Jehin Trading Co Ltd Member wf:JehinTradingCoLtdMember
1922 Nk Eng Co Ltd Member wf:NkEngCoLtdMember
1923 The season Co Ltd Member wf:TheSeasonCoLtdMember
1924 Yuil PESC Co Ltd Member wf:YuilPescCoLtdMember
1925 Youngdong Sea Food Co Ltd Member wf:YoungdongSeaFoodCoLtdMember
1926 Sinseong Trading Co Ltd Member wf:SinseongTradingCoLtdMember
1927 Reading Doctors Co Ltd Member wf:ReadingDoctorsCoLtdMember
1928 PREXCO Co Ltd Member wf:PrexcoCoLtdMember
1929 Hyunwoo International Co Ltd Member wf:HyunwooInternationalCoLtdMember
1930 CL Tech Co Ltd Member wf:CLTechCoLtdMember
1931 Force TEC Co Ltd Member wf:ForceTECCoLtdMember
1932 Protronics Co Ltd Member wf:ProtronicsCoLtdMember
1933 Instern Co Ltd Member wf:InsternCoLtdMember
1934 Disclosure of entities not applied for equity method of accounting with ownership ratio exceeding twenty percent [Line Items] LineItems wf:DisclosureOfEntitiesNotAppliedForEquityMethodOfAccountingWithOwnershipRatioExceedingTwentyPercentLineItems
1935 Number of shares owned Concept (Shares) As Of wf:NumberOfSharesOfAssociatesAndJointVenturesOwned
1936 Ownership Concept (Percent) For Period wf:ProportionOfOwnershipOfEntitiesExcludedFromAssociatesAndJointVentures
1937 Description of reasons why presumption that interest of more than twenty per cent in associate is overcome Concept (Text/String) For Period wf:DescriptionOfReasonWhyInterestsMoreThanTwentyPerCentInAssociateAndJointVenturesExcluded
1938 24130501 - Disclosure - Investment In Joint Ventures And Associates Reconciliations from the net assets of associates based on the ownership ratio to corresponding book value of investment in joint ventures and associates (Details)] Network

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1939 Reconciliations from the net assets of associates and joint ventures based on the ownership ratio to corresponding book value of investment in associates and joint ventures [Table] Table

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1940 Investments in associates and joint ventures [Axis] Axis wf:InvestmentsInAssociatesAndJointVenturesAxis
1941 Entitys total for associates and joint ventures [Domain] Member wf:EntitysTotalForAssociatesAndJointVenturesMember
1942 Woori Blackstone Korea Opportunity Private Equity Fund No.1 Member wf:WooriBlackstoneKoreaOpportunityPrivateEquityFundNoOneMember
1943 Kumho Tire Co Inc Member wf:KumhoTireCoIncMember
1944 Woori Service Networks Co Ltd Member wf:WooriServiceNetworksCoLtdMember
1945 Korea Credit Bureau Co Ltd Member wf:KoreaCreditBureauCoLtdMember
1946 Korea Finance Security Co Ltd Member wf:KoreaFinanceSecurityCoLtdMember
1947 United PF First corporate financial stability Member wf:UnitedPFFirstStCorporateFinancialStabilityMember
1948 Chin Hung International Inc Member wf:ChinHungInternationalIncMember
1949 Poonglim Industrial Co Ltd Member wf:PoonglimIndustrialCoLtdMember
1950 STX Engine Co Ltd Member wf:STXEngineCoLtdMember
1951 Samho Co Ltd Member wf:SamHoCoLtdMember
1952 STX Corporation Member wf:STXCorporationMember
1953 Osung LST Co Ltd Member wf:OsungLSTCoLtdMember
1954 Saman Corporation Member wf:SamanCorporationMember
1955 Woori Growth Partnerships New Technology Private Equity Fund Member wf:WooriGrowthPartnershipsNewTechnologyPrivateEquityFundMember
1956 2016KIF-IMM Woori Bank Technology Venture Fund Member wf:TwentySixteenKIFIMMWooriBankTechnologyVentureFundMember
1957 K BANK Co Ltd Member wf:KBankCoLtdMember
1958 Woori Renaissance Holdings Inc Member wf:WooriRenaissanceHoldingsIncMember
1959 Woori Columbus First Private Equity Fund Member wf:WooriColumbusFirstPefMember
1960 Smart Private Equity Fund No.2 Member wf:SmartPrivateEquityFundNo2Member
1961 Woori Bank-Company K Korea Movie Asset Fund Member wf:WooriBankCompanyKKoreaMovieAssetFundMember
1962 Well to Sea No.3 Private Equity Fund Member wf:WelltoSeaNo3PrivateEquityFundMember
1963 Nomura-Rifa Private Real Estate Investment Trust No.17 Member wf:NomuraRifaPrivateRealEstateInvestmentTrustNo17Member
1964 Reconciliations from the net assets of associates and joint ventures based on the ownership ratio to corresponding book value of investment in associates and joint ventures [Line Items] LineItems wf:ReconciliationsFromTheNetAssetsOfAssociatesAndJointVenturesBasedOnTheOwnershipRatioToCorrespondingBookValueOfInvestmentInAssociatesAndJointVenturesLineItems
1965 Total net asset Concept (Monetary) As Of Credit us-gaap:EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapital
1966 Ownership Concept (Percent) For Period wf:ProportionOfOwnershipInterestInAssociatesAndJointVentures
1967 Net assets of associates(or joint ventures) Concept (Monetary) As Of Credit us-gaap:EquityMethodInvestmentUnderlyingEquityInNetAssets
1968 Cost-book value differential Concept (Monetary) As Of Debit us-gaap:EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity
1969 Impairment Concept (Monetary) As Of Credit wf:AccumulatedImpairmentOfInvestmentsInAssociatesAndJointVentures
1970 Intercompany transaction and others Concept (Monetary) For Period Credit us-gaap:EquityMethodInvestmentUnrealizedIntercompanyProfitLossNotEliminatedAmount
1971 Book value Concept (Monetary) As Of Debit ifrs-full:InvestmentAccountedForUsingEquityMethod
1972 24140101 - Disclosure - Investment Properties Details of investment properties (Details) Network

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1973 Disclosure of investment property [Table] Table

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1974 Carrying amount accumulated depreciation amortisation and impairment and gross carrying amount [Axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1975 Carrying Amount [Domain] Member ifrs-full:CarryingAmountMember
1976 Acquisition cost Member ifrs-full:GrossCarryingAmountMember
1977 Accumulated depreciation Member ifrs-full:AccumulatedDepreciationAndAmortisationMember
1978 Disclosure of investment property [Line Items] LineItems ifrs-full:DisclosureOfInvestmentPropertyLineItems
1979 Net carrying value Concept (Monetary) As Of Debit ifrs-full:InvestmentProperty
1980 Reconciliation of changes in investment property [Abstract] Abstract ifrs-full:ReconciliationOfChangesInInvestmentPropertyAbstract
1981 Beginning balance Concept (Monetary) As Of Debit ifrs-full:InvestmentProperty
1982 Changes in investment property [Abstract] Abstract ifrs-full:ChangesInInvestmentPropertyAbstract
1983 Acquisition Concept (Monetary) For Period Debit ifrs-full:AdditionsFromAcquisitionsInvestmentProperty
1984 Disposal Concept (Monetary) For Period Credit ifrs-full:DisposalsInvestmentProperty
1985 Depreciation Concept (Monetary) For Period ifrs-full:DepreciationInvestmentProperty
1986 Transfer Concept (Monetary) As Of Debit wf:TransferFromToInvestmentPropertyUnderConstructionOrDevelopmentInvestmentProperty
1987 Classified to assets held for sale Concept (Monetary) For Period Credit ifrs-full:DecreaseThroughClassifiedAsHeldForSaleInvestmentProperty
1988 Foreign currencies translation adjustments Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesInvestmentProperty
1989 Others Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughOtherChangesInvestmentProperty
1990 Ending balance Concept (Monetary) As Of Debit ifrs-full:InvestmentProperty
1991 Fair value of investment properties Concept (Monetary) As Of Debit wf:InvestmentPropertyAtFairValue
1992 Description of extent to which fair value of investment property is based on valuation by independent value Concept (Text/String) For Period ifrs-full:DescriptionOfExtentToWhichFairValueOfInvestmentPropertyIsBasedOnValuationByIndependentValuer
1993 Description of investment property of level of fair value hierarchy within which fair value measurement is categorised Concept (Text/String) For Period wf:DescriptionOfInvestmentPropertyOfLevelOfFairValueHierarchyWithinWhichFairValueMeasurementIsCategorised
1994 24140401 - Disclosure - Investment Properties Rental fee earned from investment properties (Details) Network

*

*

 http://www.wooribank.com/role/InvestmentPropertiesRentalFeeEarnedFromInvestmentPropertiesDetails
1995 Implied Table Table

*

*

 implied:Table
1996 Rental income from investment property net of direct operating expense [Abstract] Abstract ifrs-full:RentalIncomeFromInvestmentPropertyNetOfDirectOperatingExpenseAbstract
1997 Rental fee earned from investment properties Concept (Monetary) For Period Credit ifrs-full:RentalIncomeFromInvestmentProperty
1998 24150101 - Disclosure - Premises And Equipment Details of premises and equipment (Details) Network

*

*

 http://www.wooribank.com/role/PremisesAndEquipmentDetailsOfPremisesAndEquipmentDetails
1999 Disclosure of property plant and equipment [Table] Table

*

*

 ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
2000 Classes of property plant and equipment [Axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
2001 Property plant and equipment [Domain] Member ifrs-full:PropertyPlantAndEquipmentMember
2002 Land Member ifrs-full:LandMember
2003 Building Member ifrs-full:BuildingsMember
2004 Properties for business use Member us-gaap:MachineryAndEquipmentMember
2005 Structures in leased office Member ifrs-full:LeaseholdImprovementsMember
2006 Construction in progress Member ifrs-full:ConstructionInProgressMember
2007 Structures Member ifrs-full:FixturesAndFittingsMember
2008 Carrying amount accumulated depreciation amortisation and impairment and gross carrying amount [Axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
2009 Carrying Amount [Domain] Member ifrs-full:CarryingAmountMember
2010 Acquisition cost Member ifrs-full:GrossCarryingAmountMember
2011 Accumulated depreciation Member ifrs-full:AccumulatedDepreciationAndAmortisationMember
2012 Disclosure of property plant and equipment [Line Items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
2013 Net carrying value Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
2014 Reconciliation of changes in property plant and equipment [Abstract] Abstract ifrs-full:ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract
2015 Beginning balance Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
2016 Changes in property plant and equipment [Abstract] Abstract ifrs-full:ChangesInPropertyPlantAndEquipmentAbstract
2017 Acquisition Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
2018 Disposal Concept (Monetary) For Period Credit ifrs-full:DisposalsPropertyPlantAndEquipment
2019 Depreciation Concept (Monetary) For Period ifrs-full:DepreciationPropertyPlantAndEquipment
2020 Classified to assets held for sale Concept (Monetary) For Period Credit ifrs-full:DecreaseThroughClassifiedAsHeldForSalePropertyPlantAndEquipment
2021 Transfer Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughTransfersPropertyPlantAndEquipment
2022 Foreign currencies translation adjustment Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesPropertyPlantAndEquipment
2023 Acquisition through business combination Concept (Monetary) For Period Debit ifrs-full:AcquisitionsThroughBusinessCombinationsPropertyPlantAndEquipment
2024 Others Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughOtherChangesPropertyPlantAndEquipment
2025 Ending balance Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
2026 24160101 - Disclosure - Intangible Assets And Goodwill Details of intangible assets (Details) Network

*

*

 http://www.wooribank.com/role/IntangibleAssetsAndGoodwillDetailsOfIntangibleAssetsDetails
2027 Disclosure of intangible assets [Table] Table

*

*

 ifrs-full:DisclosureOfIntangibleAssetsTable
2028 Classes of intangible assets and goodwill [Axis] Axis ifrs-full:ClassesOfIntangibleAssetsAndGoodwillAxis
2029 Intangible assets and goodwill [Domain] Member ifrs-full:IntangibleAssetsAndGoodwillMember
2030 Goodwill Member ifrs-full:GoodwillMember
2031 Software Member ifrs-full:ComputerSoftwareMember
2032 Industrial property rights Member ifrs-full:CopyrightsPatentsAndOtherIndustrialPropertyRightsServiceAndOperatingRightsMember
2033 Development costs Member ifrs-full:IntangibleAssetsUnderDevelopmentMember
2034 Others Member ifrs-full:OtherIntangibleAssetsMember
2035 Membership deposit Member wf:MembershipDepositMember
2036 Carrying amount accumulated depreciation amortisation and impairment and gross carrying amount [Axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
2037 Carrying Amount [Domain] Member ifrs-full:CarryingAmountMember
2038 Acquisition cost Member ifrs-full:GrossCarryingAmountMember
2039 Accumulated amortization Member ifrs-full:AccumulatedDepreciationAndAmortisationMember
2040 Accumulated impairment losses Member ifrs-full:AccumulatedImpairmentMember
2041 Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] LineItems ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillLineItems
2042 Net carrying value Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
2043 Reconciliation of changes in intangible assets and goodwill [Abstract] Abstract ifrs-full:ReconciliationOfChangesInIntangibleAssetsAndGoodwillAbstract
2044 Beginning balance Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
2045 Changes in intangible assets and goodwill [Abstract] Abstract ifrs-full:ChangesInIntangibleAssetsAndGoodwillAbstract
2046 Acquisition Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill
2047 Disposal Concept (Monetary) For Period Credit ifrs-full:DisposalsIntangibleAssetsAndGoodwill
2048 Amortization Concept (Monetary) For Period ifrs-full:AmortisationIntangibleAssetsOtherThanGoodwill
2049 Impairment losses Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossIntangibleAssetsAndGoodwill
2050 Transfer Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughTransfersIntangibleAssetsAndGoodwill
2051 Foreign currencies translation adjustment Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsAndGoodwill
2052 Others Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughOtherChangesIntangibleAssetsAndGoodwill
2053 Acquisition through business combination Concept (Monetary) For Period Debit ifrs-full:AcquisitionsThroughBusinessCombinationsIntangibleAssetsAndGoodwill
2054 Ending balance Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
2055 24170101 - Disclosure - Assets Held For Sale Details of assets held for sale (Details) Network

*

*

 http://www.wooribank.com/role/AssetsHeldForSaleDetailsOfAssetsHeldForSaleDetails
2056 Assets And Liabilities Classified As Held For Sale [Table] Table

*

*

 wf:AssetsAndLiabilitiesClassifiedAsHeldForSaleTable
2057 Assets And Liabilities Classified As Held For Sale [Axis] Axis ifrs-full:AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis
2058 Assets and liabilities not classified as held for sale [Domain] Member ifrs-full:AssetsAndLiabilitiesNotClassifiedAsHeldForSaleMember
2059 Assets and liabilities classified as held for sale [Member] Member ifrs-full:AssetsAndLiabilitiesClassifiedAsHeldForSaleMember
2060 Investments in joint ventures and associates Member wf:InvestmentsInSubsidiariesAndAssociatesOfHeldForSaleMember
2061 Premises and equipment Member wf:PremisesAndEquipmentOfHeldForSaleMember
2062 Noncurrent assets or disposal groups classified as held for sale [Line Items] LineItems wf:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleLineItems
2063 Total Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale
2064 24180101 - Disclosure - Assets Subject To Lien And Assets Acquired Through Foreclosures Assets subjected to lien (Details) Network

*

*

 http://www.wooribank.com/role/AssetsSubjectToLienAndAssetsAcquiredThroughForeclosuresAssetsSubjectedToLienDetails
2065 Financial instruments owned and pledged as collateral [Table] Table

*

*

 us-gaap:FinancialInstrumentsOwnedAndPledgedAsCollateralTable
2066 Financial instruments owned and pledged as collateral [Axis] Axis us-gaap:FinancialInstrumentsOwnedAndPledgedAsCollateralAxis
2067 Financial instruments owned and pledged as collateral [Domain] Member us-gaap:FinancialInstrumentsOwnedAndPledgedAsCollateralTypeDomain
2068 Loans and receivables Member ifrs-full:LoansAndReceivablesCategoryMember
2069 Due from the depository banks Member wf:DueFromBanksMember
2070 Financial assets at FVTPL Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingCategoryMember
2071 Financial institutions debt securities and others Member wf:DueFromOtherFinancialInstitutionsMember
2072 AFS financial assets Member ifrs-full:FinancialAssetsAvailableforsaleCategoryMember
2073 Corporate bonds Member wf:CorporateBondsDebtSecuritiesOfAvailableForSaleMember
2074 Korean treasury and government agencies bonds and others Member wf:KoreanTreasuryAndGovernmentAndOthersDebtSecuritiesOfAvailableForSaleMember
2075 Korean treasury and government agencies bonds Member wf:KoreaTreasuryAndGovernmentOfFinancialAssetsAvailableforsaleMember
2076 Financial institutions debt securities and others Member wf:FinancialInstitutionsDebtSecuritiesAndOthersOfFinancialAssetsAvailableforsaleMember
2077 HTM financial assets Member ifrs-full:HeldtomaturityInvestmentsCategoryMember
2078 Korean treasury and government agencies bonds Member wf:KoreanTreasuryAndGovernmentDebtSecuritiesOfHeldtomaturityInvestmentsMember
2079 Korean treasury and government agencies bonds and others Member wf:KoreanTreasuryAndGovernmentAndOthersDebtSecuritiesOfHeldtomaturityInvestmentsMember
2080 Premises and equipment Member us-gaap:RealEstateMember
2081 Land and building Member us-gaap:CommercialRealEstateMember
2082 Currency [Axis] Axis us-gaap:CurrencyAxis
2083 All currencies [Domain] Member currency:AllCurrenciesDomain
2084 KRW [Member] Member currency:KRW
2085 Foreign Currencies Others [Member] Member currency:XXX
2086 Class of financing receivable type of borrower [Axis] Axis us-gaap:ClassOfFinancingReceivableTypeOfBorrowerAxis
2087 Class of financing receivable type of borrower [Domain] Member us-gaap:ClassOfFinancingReceivableTypeOfBorrowerDomain
2088 Bank of China and others Member wf:BankOfChinaAndOthersMember
2089 Samsung Securities Co Ltd and others Member wf:SamsungSecuritiesAndOthersMember
2090 Korea Investment and Securities Co Ltd and others Member wf:KoreaInvestmentSecuritiesAndOthersMember
2091 Yuanta Securities Co Ltd and others Member wf:YuantaSecuritiesAndOthersMember
2092 Korea Securities Depository and others Member wf:KoreaSecuritiesDepositoryAndOthersMember
2093 The BOK and others Member wf:BankOfKoreAndOthersMember
2094 Korea Securities Depository Member wf:KoreaSecuritiesDepositoryMember
2095 Credit Counselling & Recovery Service and others Member wf:CreditCounsellingAndRecoveryServiceAndOthersMember
2096 Financial instruments owned and pledged as collateral [Line Items] LineItems us-gaap:FinancialInstrumentsOwnedAndPledgedAsCollateralLineItems
2097 Amount Concept (Monetary) As Of Debit wf:AssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities
2098 Nature of assets pledged as collateral description Concept (Text/String) For Period wf:NatureOfAssetsPledgedAsCollateralDescription
2099 24180201 - Disclosure - Assets Subject To Lien And Assets Acquired Through Foreclosures Carrying amounts of buildings acquired through foreclosure (Details) Network

*

*

 http://www.wooribank.com/role/AssetsSubjectToLienAndAssetsAcquiredThroughForeclosuresBuildingsAcquiredThroughForeclosureDetails
2100 Implied Table Table

*

*

 implied:Table
2101 Disclsoure of carrying amounts o assets acquired through foreclosure [Abstract] Abstract wf:DisclsoureOfCarryingAmountsOAssetsAcquiredThroughForeclosureAbstract
2102 Land Concept (Monetary) As Of Debit wf:LandAcquiredThroughForeclosure
2103 Buildings Concept (Monetary) As Of Debit wf:BuildingsAcquiredThroughForeclosure
2104 Properties not used in business Concept (Monetary) As Of Debit wf:PropertiesForBusinessUseAcquiredThroughForeclosure
2105 Total Concept (Monetary) As Of Debit us-gaap:RealEstateAcquiredThroughForeclosure
2106 24180301 - Disclosure - Assets Subject To Lien And Assets Acquired Through Foreclosures Details of securities lent (Details) Network

*

*

 http://www.wooribank.com/role/AssetsSubjectToLienAndAssetsAcquiredThroughForeclosuresDetailsOfSecuritiesLentDetails
2107 Disclosure of financial assets transferred during period which do not qualify for derecognition [Table] Table

*

*

 ifrs-full:DisclosureOfFinancialAssetsTransferredDuringPeriodWhichDoNotQualifyForDerecognitionTable
2108 Financial assets which do not qualify for derecognition [Axis] Axis ifrs-full:FinancialAssetsWhichDoNotQualifyForDerecognitionAxis
2109 Financial assets which do not qualify for derecognition [Domain] Member ifrs-full:FinancialAssetsWhichDoNotQualifyForDerecognitionMember
2110 Loaned securities Member ifrs-full:SecuritiesLendingMember
2111 Financial assets at FVTPL Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
2112 Korean Equity securities Member ifrs-full:TradingEquitySecuritiesMember
2113 AFS financial assets Member ifrs-full:FinancialAssetsAvailableforsaleCategoryMember
2114 Korean treasury and government agencies bonds and others Member wf:KoreaTreasuryAndGovernmentMember
2115 Class of financing receivable type of borrower [Axis] Axis us-gaap:ClassOfFinancingReceivableTypeOfBorrowerAxis
2116 Class of financing receivable type of borrower [Domain] Member us-gaap:ClassOfFinancingReceivableTypeOfBorrowerDomain
2117 Samsung Securities Co Ltd and others Member wf:SamsungSecuritiesAndOthersMember
2118 Korea Securities Depository and others Member wf:KoreaSecuritiesDepositoryAndOthersMember
2119 Disclosure of financial assets transferred during period which do not qualify for derecognition [Line Items] LineItems ifrs-full:DisclosureOfFinancialAssetsTransferredDuringPeriodWhichDoNotQualifyForDerecognitionLineItems
2120 Assets that entity continues to recognise Concept (Monetary) As Of Debit ifrs-full:AssetsThatEntityContinuesToRecognise
2121 Nature of financial assets transferred during period which do not qualify for derecognition Concept (Text/String) For Period ifrs-full:NatureOfFinancialAssetsTransferredDuringPeriodWhichDoNotQualifyForDerecognition
2122 24180401 - Disclosure - Assets Subject To Lien And Assets Acquired Through Foreclosures Collaterals held that can be disposed and recollateralized regardless of defaults of counterparties (Details) Network

*

*

 http://www.wooribank.com/role/AssetsSubjectToLienAndAssetsAcquiredThroughForeclosuresCollateralsHeldThatCanBeDisposedAndReCollateralizedRegardlessOfDefaultsOfCounterpartiesDetails
2123 The fair values of collateral available to sell or repledge and collateral sold or repledged [Table] Table

*

*

 wf:TheFairValuesOfCollateralAvailableToSellOrRepledgeAndCollateralSoldOrRepledgedTable
2124 Collateral [Axis] Axis us-gaap:CollateralAxis
2125 Collateral [Domain] Member us-gaap:CollateralDomain
2126 Collateral pledged [Domain] Member us-gaap:CollateralPledgedMember
2127 Securities Member wf:MarkeTableSecuritiesMember
2128 Fair value of collateral available to sell or repledge and collateral sold or repledged [Line Items] LineItems wf:FairValueOfCollateralAvailableToSellOrRepledgeAndCollateralSoldOrRepledgedLineItems
2129 Fair values of collaterals Concept (Monetary) As Of Debit ifrs-full:AssetsHeldAsCollateralPermittedToBeSoldOrRepledgedAtFairValue
2130 Fair values of collaterals were disposed or re-subjected to lien Concept (Monetary) As Of Debit ifrs-full:AssetsSoldOrRepledgedAsCollateralAtFairValue
2131 24190101 - Disclosure - Other Assets Details of other assets (Details) Network

*

*

 http://www.wooribank.com/role/OtherAssetsDetailsOfOtherAssetsDetails
2132 Other assets [Table] Table

*

*

 wf:OtherAssetsTable
2133 Classes of assets [Axis] Axis ifrs-full:ClassesOfAssetsAxis
2134 Classes of assets [Domain] Member ifrs-full:ClassesOfAssetsMember
2135 Other assets [Member] Member ifrs-full:OtherAssetsMember
2136 Prepaid expenses Member wf:PrepaidExpensesMember
2137 Advance payments Member wf:AdvancePaymentsMember
2138 Non-operative assets Member wf:NonOperativeAssetsMember
2139 Others Member wf:MiscellaneousAssetsMember
2140 Other assests [Line Items] LineItems wf:OtherAssestsLineItems
2141 Total Concept (Monetary) As Of Debit ifrs-full:OtherAssets
2142 24200101 - Disclosure - Financial Liabilitiy At Fair Value Through Profit Or Loss Details of financial liabilities at fair value through profit or loss (Details) Network

*

*

 http://www.wooribank.com/role/FinancialLiabilitiyAtFairValueThroughProfitOrLossDetailsOfFinancialLiabilitiesAtFairValueThroughProfitOrLossDetails
2143 Financial liabilities at fair value through profit or loss [Table] Table

*

*

 wf:FinancialLiabilitiesAtFairValueThroughProfitOrLossTable
2144 Categories of financial liabilities [Axis] Axis ifrs-full:CategoriesOfFinancialLiabilitiesAxis
2145 Financial liabilities category [Domain] Member ifrs-full:FinancialLiabilitiesCategoryMember
2146 Financial liabilities at fair value through profit or loss category [Member] Member ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember
2147 Financial liabilities held for trading Member ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossThatMeetDefinitionOfHeldForTradingCategoryMember
2148 Deposits due to Customers Member wf:DepositsFromCustomersOfFinancialLiabilitiesHeldForTradingMember
2149 Gold banking liabilities Member wf:GoldIndexLinkedLiabilitiesMember
2150 Derivative liabilities Member wf:DerivativeFinancialLiabilitiesHeldForTradingMember
2151 Financial liabilities designated at FVTPL Member ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossDesignatedUponInitialRecognitionCategoryMember
2152 Equity linked securities index Member wf:EquityLinkedSecuritiesOfFinancialAssetsAtFairValueThroughProfitOrLossDesignatedUponInitialRecognitionMember
2153 Equity linked securities index in short position Member wf:EquityIndexLinkedSecuritiesSoldMember
2154 Debentures Member wf:DebenturesOfFinancialLiabilitiesAtFairValueThroughProfitOrLossDesignatedUponInitialRecognitionMember
2155 Debentures in local currency Member wf:DebenturesInKoreanWonMember
2156 Disclosure of financial liabilities at fair value through profit or loss [Line Items] LineItems wf:DisclosureOfFinancialLiabilitiesAtFairValueThroughProfitOrLossLineItems
2157 Financial liabilities held for trading Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading
2158 Financial liabilities designated at FVTPL Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossDesignatedAsUponInitialRecognition
2159 Financial liabilities at FVTPL Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLoss
2160 24200401 - Disclosure - Financial Liabilitiy At Fair Value Through Profit Or Loss Credit risk adjustments to financial liabilities designated at fair value through profit or loss (Details) Network

*

*

 http://www.wooribank.com/role/FinancialLiabilitiyAtFairValueThroughProfitOrLossCreditRiskAdjustmentsToFinancialLiabilitiesDesignatedAtFairValueThroughProfitOrLossDetails
2161 Implied Table Table

*

*

 implied:Table
2162 Designated financial liabilities at fair value through profit or loss [Abstract] Abstract ifrs-full:DesignatedFinancialLiabilitiesAtFairValueThroughProfitOrLossAbstract
2163 Financial liabilities designated at FVTPL subject to credit risk adjustments Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossDesignatedAsUponInitialRecognition
2164 Credit risk adjustments Concept (Monetary) For Period Credit ifrs-full:ChangesInFairValueOfFinancialLiabilityAttributableToChangesInCreditRiskOfLiability
2165 Accumulated changes in credit risk adjustments Concept (Monetary) As Of Credit ifrs-full:AccumulatedChangesInFairValueOfFinancialLiabilityAttributableToChangesInCreditRiskOfLiability
2166 Additional information about credit risk adjustments Concept (Text/String) For Period wf:AdditionalInformationAboutCreditRiskAdjustments
2167 24200501 - Disclosure - Financial Liabilitiy At Fair Value Through Profit Or Loss Difference between carrying amount and nominal amount at maturity of financial liabilities at fair value through profit or loss (Details) Network

*

*

 http://www.wooribank.com/role/FinancialLiabilitiyAtFairValueThroughProfitOrLossDifferenceBetweenCarryingAmountAndNominalAmountAtMaturityOfFinancialLiabilitiesAtFairValueThroughProfitOrLossDetails
2168 Implied Table Table

*

*

 implied:Table
2169 Disclosure of difference between carrying amount and nominal amountat maturityof financial liabilities at fair value through profit or loss designated as upon initial recognition [Abstract] Abstract wf:DisclosureOfDifferenceBetweenCarryingAmountAndNominalAmountatMaturityofFinancialLiabilitiesAtFairValueThroughProfitOrLossDesignatedAsUponInitialRecognitionAbstract
2170 Carrying amount Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLossDesignatedAsUponInitialRecognition
2171 Nominal amount at maturity Concept (Monetary) As Of Debit wf:AmountContractuallyRequiredToPayAtMaturityToHolderOfObligation
2172 Difference Concept (Monetary) As Of ifrs-full:DifferenceBetweenCarryingAmountOfFinancialLiabilityAndAmountContractuallyRequiredToPayAtMaturityToHolderOfObligation
2173 24210101 - Disclosure - Deposits Due To Customers Details of deposits sorted by interest type (Details) Network

*

*

 http://www.wooribank.com/role/DepositsDueToCustomersDetailsOfDepositsSortedByInterestTypeDetails
2174 Disclosure of deposits from customers [Table] Table

*

*

 wf:DisclosureOfDepositsFromCustomersTable
2175 Currency [Axis] Axis us-gaap:CurrencyAxis
2176 All currencies [Domain] Member currency:AllCurrenciesDomain
2177 KRW [Member] Member currency:KRW
2178 Foreign Currencies Others [Member] Member currency:XXX
2179 Types of deposits [Axis] Axis wf:TypesOfDepositsAxis
2180 Types of deposits [Domain] Member wf:TypesOfDepositsMember
2181 Demand deposits Member us-gaap:DemandDepositsMember
2182 Time deposits Member wf:BalancesOnTermDepositsFromCustomersMember
2183 Mutual funds Member us-gaap:MutualFundMember
2184 Deposits on notes payables Member wf:DepositsOnNotesPayablesMember
2185 Deposits on CMA Member wf:DepositsOnCmaMember
2186 Certificate of deposits Member us-gaap:CertificatesOfDepositMember
2187 Other deposits Member wf:BalancesOnOtherDepositsFromCustomersMember
2188 Deposits in foreign currencies Member wf:DepositsFromCustomersInForeignCurrenciesMember
2189 Carrying amount accumulated depreciation amortisation and impairment and gross carrying amount [Axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
2190 Carrying Amount [Domain] Member ifrs-full:CarryingAmountMember
2191 Gross carrying amount [Member] Member ifrs-full:GrossCarryingAmountMember
2192 Present value discount Member wf:PresentValueDiscountMember
2193 Disclosure of deposits from customers [Line Items] LineItems wf:DisclosureOfDepositsFromCustomersLineItems
2194 Total Concept (Monetary) As Of Credit ifrs-full:DepositsFromCustomers
2195 24220101 - Disclosure - Borrowings And Debentures Details of borrowings (Details) Network

*

*

 http://www.wooribank.com/role/BorrowingsAndDebenturesDetailsOfBorrowingsDetails
2196 Disclosure of detailed information about borrowings [Table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
2197 Borrowings by name [Axis] Axis ifrs-full:BorrowingsByNameAxis
2198 Borrowings by name [Domain] Member ifrs-full:BorrowingsByNameMember
2199 Borrowings in local currency Member wf:BorrowingsInKoreanWonMember
2200 Borrowings from The BOK Member wf:BorrowingsFromBankOfKoreaMember
2201 Borrowings from government funds Member wf:BorrowingsFromGovernmentMember
2202 Small Enterprise And Market Service and others Member wf:BorrowingsFromSmallEnterpriseAndMarketServiceAndOthersMember
2203 Small and Medium Business Corporation and others Member wf:BorrowingsFromSmallAndMediumBusinessCorporationAndOthersMember
2204 Others Member wf:OtherBorrowingsMember
2205 The Korea Development Bank and others Member wf:BorrowingsFromKoreaDevelopmentBankAndOthersMember
2206 Seoul Metropolitan Government and others Member wf:BorrowingsFromSeoulMetropolitanGovernmentAndOthersMember
2207 Borrowings in foreign currency Member wf:BorrowingsInForeignCurrencyMember
2208 Borrowings in foreign currencies Member wf:OnshoreBorrowingsInForeignCurrenciesMember
2209 The Export-Import BOK and others Member wf:BorrowingsFromExportImportBankOfKoreaAndOthersMember
2210 Offshore borrowings in foreign currencies Member wf:OffshoreBorrowingsInForeignCurrenciesMember
2211 Commonwealth Bank Member wf:BorrowingsFromCommonwealthBankMember
2212 Wells Fargo Member wf:BorrowingsFromWellsFargoMember
2213 Bills sold Member wf:BillsSoldMember
2214 Call money Member wf:CallMoneyMember
2215 Bonds sold under repurchase agreements Member us-gaap:RepurchaseAgreementsMember
2216 Carrying amount accumulated depreciation amortisation and impairment and gross carrying amount [Axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
2217 Carrying Amount [Domain] Member ifrs-full:CarryingAmountMember
2218 Gross carrying amount [Member] Member ifrs-full:GrossCarryingAmountMember
2219 Present value discount Member wf:PresentValueDiscountMember
2220 Range [Axis] Axis ifrs-full:RangeAxis
2221 Ranges [Domain] Member ifrs-full:RangesMember
2222 Bottom of range [Member] Member ifrs-full:BottomOfRangeMember
2223 Top of range [Member] Member ifrs-full:TopOfRangeMember
2224 Disclosure of detailed information about borrowings [Line Items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
2225 Total Concept (Monetary) As Of Credit ifrs-full:Borrowings
2226 Interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
2227 Lenders Concept (Text/String) For Period wf:DescriptionOfLendersOfBorrowings
2228 24220201 - Disclosure - Borrowings And Debentures Details of debentures (Details) Network

*

*

 http://www.wooribank.com/role/BorrowingsAndDebenturesDetailsOfDebenturesDetails
2229 Disclosure of detailed information about debentures [Table] Table

*

*

 wf:DisclosureOfDetailedInformationAboutDebenturesTable
2230 Borrowings by name [Axis] Axis ifrs-full:BorrowingsByNameAxis
2231 Borrowings by name [Domain] Member ifrs-full:BorrowingsByNameMember
2232 Face value of bond Member wf:DebenturesOnFaceValueMember
2233 Ordinary bonds Member wf:OrdinaryDebtMember
2234 Subordinated bonds Member us-gaap:SubordinatedDebtMember
2235 Other bonds Member wf:OtherDebenturesMember
2236 Carrying amount accumulated depreciation amortisation and impairment and gross carrying amount [Axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
2237 Carrying Amount [Domain] Member ifrs-full:CarryingAmountMember
2238 Gross carrying amount [Member] Member ifrs-full:GrossCarryingAmountMember
2239 Discounts on bond Member wf:DiscountPremiumOnDebtsMember
2240 Range [Axis] Axis ifrs-full:RangeAxis
2241 Ranges [Domain] Member ifrs-full:RangesMember
2242 Bottom of range [Member] Member ifrs-full:BottomOfRangeMember
2243 Top of range [Member] Member ifrs-full:TopOfRangeMember
2244 Disclosure of detailed information about debentures [Line Items] LineItems wf:DisclosureOfDetailedInformationAboutDebenturesLineItems
2245 Total Concept (Monetary) As Of Credit ifrs-full:NotesAndDebenturesIssued
2246 Interest rate Concept (Percent) For Period wf:DebenturesInterestRate
2247 Fair value hedged amount of debentures Concept (Monetary) As Of Credit wf:FairValueHedgedAmountOfDebentures
2248 Cash flow hedged amount of debentures Concept (Monetary) As Of Credit wf:CashFlowHedgedAmountOfDebentures
2249 24230101 - Disclosure - Provisions Details of provisions (Details) Network

*

*

 http://www.wooribank.com/role/ProvisionsDetailsOfProvisionsDetails
2250 Disclosure of other provisions [Table] Table

*

*

 ifrs-full:DisclosureOfOtherProvisionsTable
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2277 24240101 - Disclosure - Net Defined Benefits Liability Asset Net defined benefit liability asset of group (Details) Network

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2355 24240801 - Disclosure - Net Defined Benefits Liability Asset Key actuarial assumptions used in defined benefit liability assessment (Details) Network

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2362 24240901 - Disclosure - Net Defined Benefits Liability Asset Sensitivity to actuarial assumptions used in the assessment of defined benefit obligation (Details) Network

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2375 24250101 - Disclosure - Other Financial Liabilities And Other Liabilities Details of other financial liabilities and other liabilities (Details) Network

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2399 24260101 - Disclosure - Derivatives Details of derivative assets and derivative liabilities (Details) Network

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2438 24260201 - Disclosure - Derivatives Gains or losses from valuation of financial instruments under hedge accounting (Details) Network

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 http://www.wooribank.com/role/DerivativesGainsOrLossesFromValuationOfFinancialInstrumentsUnderHedgeAccountingDetails
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2445 24270101 - Disclosure - Deferred Day 1 Profit Or Loss Changes of deferred day 1 profits or losses (Details) Network

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 http://www.wooribank.com/role/DeferredDay1ProfitOrLossChangesOfDeferredDay1ProfitsOrLossesDetails
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2454 24280101 - Disclosure - Capital Stock And Capital Surplus Details of share capital (Details) Network

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2470 24280301 - Disclosure - Capital Stock And Capital Surplus Details of capital surplus (Details) Network

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 http://www.wooribank.com/role/CapitalStockAndCapitalSurplusDetailsOfCapitalSurplusDetails
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2476 24290101 - Disclosure - Hybrid Securities Details of hybrid securities classified as owners equity (Details) Network

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2496 Interest rate (%) Concept (Percent) For Period wf:HybridSecuritiesOfOtherEquityInterestInterestRate
2497 Hybrid securities Concept (Monetary) As Of Credit wf:HybridSecuritiesOfOtherEquityInterest
2498 Description of nature of bond type hybrid securities of other equity interest classified as owners equity Concept (Text/String) For Period wf:DescriptionOfNatureOfBondTypeHybridSecuritiesOfOtherEquityInterestClassifiedAsOwnersEquity
2499 24300101 - Disclosure - Other Equity Details of other equity (Details) Network

*

*

 http://www.wooribank.com/role/OtherEquityDetailsOfOtherEquityDetails
2500 Implied Table Table

*

*

 implied:Table
2501 Disclosure Of Other Equity Interest [Abstract] Abstract wf:DisclosureOfOtherEquityInterestAbstract
2502 Accumulated other comprehensive income [Abstract] Abstract wf:AccumulatedOtherComprehensiveIncomeAbstract
2503 Gain on valuation of AFS financial assets Concept (Monetary) As Of Credit ifrs-full:ReserveOfGainsAndLossesOnRemeasuringAvailableforsaleFinancialAssets
2504 Share of other comprehensive loss of joint ventures and associates Concept (Monetary) As Of Credit wf:AccoumulatedSharesOfOtherComprehensiveIncomeOfAssociatesAndJointVentures
2505 Loss on foreign currencies translation of foreign operations Concept (Monetary) As Of Credit ifrs-full:ReserveOfExchangeDifferencesOnTranslation
2506 Remeasurement of the net defined benefit liability Concept (Monetary) As Of Credit ifrs-full:ReserveOfRemeasurementsOfDefinedBenefitPlans
2507 Gain on valuation of cash flow hedges Concept (Monetary) As Of Credit ifrs-full:ReserveOfCashFlowHedges
2508 Equity related to assets held for sale Concept (Monetary) As Of Credit ifrs-full:AmountRecognisedInOtherComprehensiveIncomeAndAccumulatedInEquityRelatingToNoncurrentAssetsOrDisposalGroupsHeldForSale
2509 Sub-total Concept (Monetary) As Of Credit ifrs-full:AccumulatedOtherComprehensiveIncome
2510 Treasury shares Concept (Monetary) As Of Debit ifrs-full:TreasuryShares
2511 Other capital adjustments Concept (Monetary) As Of Credit wf:OtherCapitalAdjustments
2512 Total Concept (Monetary) As Of Credit ifrs-full:OtherEquityInterest
2513 24300201 - Disclosure - Other Equity Changes in the accumulated other comprehensive income (Details) Network

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*

 http://www.wooribank.com/role/OtherEquityChangesInTheAccumulatedOtherComprehensiveIncomeDetails
2514 Disclosure of analysis of other comprehensive income by item [Table] Table

*

*

 ifrs-full:DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemTable
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2518 Share of other comprehensive income (loss) of joint ventures and associates Member ifrs-full:ReserveOfGainsAndLossesFromInvestmentsInEquityInstrumentsMember
2519 Gain (loss) on foreign currency translation of foreign operations Member ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember
2520 Remeasurement gain (loss) related to defined benefit plan Member ifrs-full:ReserveOfRemeasurementsOfDefinedBenefitPlansMember
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2522 Transfer to non-current assets held for sale Member ifrs-full:AmountRecognisedInOtherComprehensiveIncomeAndAccumulatedInEquityRelatingToNoncurrentAssetsOrDisposalGroupsHeldForSaleMember
2523 Disclosure of analysis of other comprehensive income by item [Line Items] LineItems ifrs-full:DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemLineItems
2524 Beginning balance Concept (Monetary) As Of Credit ifrs-full:AccumulatedOtherComprehensiveIncome
2525 Changes in accumulated other comprehensive income [Abstract] Abstract wf:ChangesInAccumulatedOtherComprehensiveIncomeAbstract
2526 Increase (decrease) Concept (Monetary) For Period Credit wf:OtherComprehensiveIncomeExceptForReclassificaitonBeforeTax
2527 Reclassification adjustments Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax
2528 Income tax effect Concept (Monetary) For Period ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome
2529 Ending balance Concept (Monetary) As Of Credit ifrs-full:AccumulatedOtherComprehensiveIncome
2530 24310101 - Disclosure - Retained Earnings Details of retained earnings (Details) Network

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*

 http://www.wooribank.com/role/RetainedEarningsDetailsOfRetainedEarningsDetails
2531 Retained earnings accumulated deficit [Table] Table

*

*

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2542 Revaluation reserve Member wf:RevaluationReserveMember
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2547 Changes in retained earnings [Abstract] Concept (Text/String) For Period wf:ChangesInRetainedEarningsAbstract
2548 Net income attributable to owners Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOwnersOfParent
2549 Changes due to the Spin-off Concept (Monetary) For Period Credit wf:ChangesInRetainedEarningsDueToSpinOff
2550 Dividends on common stock Concept (Monetary) For Period Debit wf:DividendsPaidToOwnersOfParent
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2554 Retirement of treasury stock Concept (Monetary) For Period Debit wf:ChangesInRetainedEarningsDueToCancellationOfTreasuryShares
2555 Increase decrease in retained earnings through transfers and other changes equity Concept (Monetary) For Period Debit wf:IncreaseDecreaseInRetainedEarningsThroughTransfersAndOtherChangesEquity
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2558 Sub-total Concept (Monetary) As Of Credit wf:VoluntaryReserve
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2561 Description of nature and purpose of voluntary reserves within equity Concept (Text/String) For Period wf:DescriptionOfNatureAndPurposeOfVoluntaryReservesWithinEquity
2562 24320101 - Disclosure - Regulatory Reserve For Credit Loss Details of planned regulatory reserve for credit loss (Details) Network

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*

 http://www.wooribank.com/role/RegulatoryReserveForCreditLossBalanceOfThePlannedRegulatoryReserveForCreditLossDetails
2563 Implied Table Table

*

*

 implied:Table
2564 Disclosure of regulatory reserve for credit loss [Abstract] Abstract wf:DisclosureOfRegulatoryReserveForCreditLossAbstract
2565 Beginning balance Concept (Monetary) As Of Credit wf:RegulatoryReserveForCreditLoss
2566 Planned provision of regulatory reserve for credit loss Concept (Monetary) For Period Debit wf:ProvisionOrReversalOfRegulatoryReserveForCreditLoss
2567 Ending balance Concept (Monetary) As Of Credit wf:RegulatoryReserveForCreditLoss
2568 Description of other regulatory limitations Concept (Text/String) For Period us-gaap:DescriptionOfOtherRegulatoryLimitations
2569 24320201 - Disclosure - Regulatory Reserve For Credit Loss Details of adjusted net income and earning loss per share with planned reserves (Details) Network

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*

 http://www.wooribank.com/role/RegulatoryReserveForCreditLossDetailsOfAdjustedNetIncomeAndEarningLossPerShareWithPlannedReservesDetails
2570 Implied Table Table

*

*

 implied:Table
2571 Disclosure of adjusted earnings per share after provision reversal of regulatory reserve for credit loss [Abstract] Abstract wf:DisclosureOfAdjustedEarningsPerShareAfterProvisionReversalOfRegulatoryReserveForCreditLossAbstract
2572 Net income (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
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2574 Adjusted net income after the provision of regulatory reserve Concept (Monetary) For Period Credit wf:AdjustedProfitLossAfterProvisionOrReversalOfRegulatoryReserveForCreditLoss
2575 Adjusted EPS after the provision of regulatory reserve (Unit: Korean Won) Concept (Share) For Period wf:AdjustedEarningsPerShareAfterProvisionOrReversalOfRegulatoryReserveForCreditLoss
2576 Provision of regulatory reserve for credit loss previously disclosed but calculated using current methods Concept (Monetary) For Period Debit wf:ProvisionOfRegulatoryReserveForCreditLossPreviouslyDisclosedButCalculatedUsingCurrentMethods
2577 Adjusted net income after provision of regularory reserve previously disclosed but calculated using current methods Concept (Monetary) For Period Credit wf:AdjustedNetIncomeAfterProvisionOfRegularoryReservePreviouslyDisclosedButCalculatedUsingCurrentMethods
2578 Adjusted e p s after provision of regulatory reserve previously disclosed but calculated using current methods Concept (Share) For Period wf:AdjustedEPSAfterProvisionOfRegulatoryReservePreviouslyDisclosedButCalculatedUsingCurrentMethods
2579 24330101 - Disclosure - Dividends Details of dividend paid and to be approved (Details) Network

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*

 http://www.wooribank.com/role/DividendsDetailsOfDividendPaidAndToBeApprovedDetails
2580 Implied Table Table

*

*

 implied:Table
2581 Dividends [Abstract] Abstract us-gaap:DividendsAbstract
2582 Dividend paid Concept (Monetary) For Period Debit ifrs-full:DividendsRecognisedAsDistributionsToOwnersOfParent
2583 Dividend paid per share Concept (Share) For Period ifrs-full:DividendsRecognisedAsDistributionsToOwnersPerShare
2584 Dividends proposed or declared before financial statements authorised for issue but not recognised as distribution to owners Concept (Monetary) For Period ifrs-full:DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwners
2585 Dividends proposed or declared before financial statements authorised for issue but not recognised as distribution to owners per share Concept (Share) For Period ifrs-full:DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerShare
2586 24340101 - Disclosure - Net Interest Income Details of interest income (Details) Network

*

*

 http://www.wooribank.com/role/NetInterestIncomeDetailsOfInterestIncomeDetails
2587 Implied Table Table

*

*

 implied:Table
2588 Disclosure of interest income operating [Abstract] Abstract wf:DisclosureOfInterestIncomeOperatingAbstract
2589 Financial assets at FVTPL Concept (Monetary) For Period Credit wf:InterestIncomeFromFinancialAssetsAtFairValueThroughProfitOrLoss
2590 AFS financial assets Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnAvailableforsaleFinancialAssets
2591 HTM financial assets Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnHeldtomaturityInvestments
2592 Loans and receivables Abstract wf:InterestIncomeOnLoansAndReceivablesAbstract
2593 Interest on due from banks Concept (Monetary) For Period Credit us-gaap:InterestIncomeDepositsWithFinancialInstitutions
2594 Interest on loans Concept (Monetary) For Period Credit wf:InterestIncomeOnLoans
2595 Interest of other receivables Concept (Monetary) For Period Credit wf:InterestIncomeOnOtherReceivables
2596 Sub-total Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnLoansAndReceivables
2597 Total Concept (Monetary) For Period Credit ifrs-full:RevenueFromInterest
2598 24340201 - Disclosure - Net Interest Income Details of interest expense (Details) Network

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*

 http://www.wooribank.com/role/NetInterestIncomeDetailsOfInterestExpenseDetails
2599 Implied Table Table

*

*

 implied:Table
2600 Interest expense [Abstract] Abstract us-gaap:InterestExpenseAbstract
2601 Interest on deposits due to customers Concept (Monetary) For Period Debit ifrs-full:InterestExpenseOnDepositsFromCustomers
2602 Interest on borrowings Concept (Monetary) For Period Debit ifrs-full:InterestExpenseOnBorrowings
2603 Interest on debentures Concept (Monetary) For Period Debit ifrs-full:InterestExpenseOnBonds
2604 Interest expense on others Concept (Monetary) For Period Debit ifrs-full:InterestExpenseOnOtherFinancialLiabilities
2605 Total Concept (Monetary) For Period Debit ifrs-full:InterestExpense
2606 24350101 - Disclosure - Net Fees And Commissions Income Details of fees and commissions income recognized (Details) Network

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*

 http://www.wooribank.com/role/NetFeesAndCommissionsIncomeDetailsOfFeesAndCommissionsIncomeRecognizedDetails
2607 Implied Table Table

*

*

 implied:Table
2608 Fee and commission income [Abstract] Abstract ifrs-full:FeeAndCommissionIncomeAbstract
2609 Banking fees Concept (Monetary) For Period Credit us-gaap:ServicingFeesNet
2610 Guarantee fees Concept (Monetary) For Period Credit us-gaap:GuarantyFeeIncome
2611 Fees from project financing Concept (Monetary) For Period Credit wf:ProjectFinancingFeeIncome
2612 Credit card fees Concept (Monetary) For Period Credit us-gaap:FeesAndCommissionsCreditCards
2613 Brokerage fees Concept (Monetary) For Period Credit ifrs-full:BrokerageFeeIncome
2614 Others Concept (Monetary) For Period Credit ifrs-full:OtherFeeAndCommissionIncome
2615 Total Concept (Monetary) For Period Credit ifrs-full:FeeAndCommissionIncome
2616 Disclosure of composition of banking fees Concept (Text/String) For Period wf:DisclosureOfCompositionOfBankingFeesExplanatory
2617 24350201 - Disclosure - Net Fees And Commissions Income Details of fees and commissions expense incurred (Details) Network

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*

 http://www.wooribank.com/role/NetFeesAndCommissionsIncomeDetailsOfFeesAndCommissionsExpenseIncurredDetails
2618 Implied Table Table

*

*

 implied:Table
2619 Fee and commission expense [Abstract] Abstract ifrs-full:FeeAndCommissionExpenseAbstract
2620 Fees paid Concept (Monetary) For Period Debit wf:FeeAndCommissionPaid
2621 Credit card commissions Concept (Monetary) For Period Debit wf:FeesAndCommissionsExpenseCreditCards
2622 Brokerage commissions Concept (Monetary) For Period Debit ifrs-full:BrokerageFeeExpense
2623 Others Concept (Monetary) For Period Debit ifrs-full:OtherFeeAndCommissionExpense
2624 Total Concept (Monetary) For Period Debit ifrs-full:FeeAndCommissionExpense
2625 24360101 - Disclosure - Dividend Income Details of dividend income (Details) Network

*

*

 http://www.wooribank.com/role/DividendIncomeDetailsOfDividendIncomeDetails
2626 Implied Table Table

*

*

 implied:Table
2627 Disclosure Of Revenue From Dividends [Abstract] Abstract wf:DisclosureOfRevenueFromDividendsAbstract
2628 Dividend from financial assets at FVTPL Concept (Monetary) For Period Credit wf:DividendIncomeFromFinancialAssetsAtFairValueThroughProfitOrLoss
2629 Dividend from AFS financial assets Concept (Monetary) For Period Credit wf:DividendIncomeFromAvailableForSaleFinancialAssets
2630 Total Concept (Monetary) For Period Credit ifrs-full:RevenueFromDividends
2631 24370101 - Disclosure - Gains Losses On Financial Assets At Fair Value Through Profit Or Loss Details of gains or losses related to financial assets at fair value through profit or loss (Details) Network

*

*

 http://www.wooribank.com/role/GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLossDetailsOfGainsOrLossesRelatedToFinancialAssetsAtFairValueThroughProfitOrLossDetails
2632 Implied Table Table

*

*

 implied:Table
2633 Disclosure Of Gains Losses On Financial Instruments At Fair Value Through Profit Or Loss [Abstract] Abstract wf:DisclosureOfGainsLossesOnFinancialInstrumentsAtFairValueThroughProfitOrLossAbstract
2634 Gains on financial assets held for trading Concept (Monetary) For Period Credit wf:GainsLossesOnFinancialInstrumentsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading
2635 Gains (losses) of financial assets designated at FVTPL Concept (Monetary) For Period Credit wf:GainsLossesOnFinancialInstrumentsAtFairValueThroughProfitOrLossDesignatedAsUponInitialRecognition
2636 Total Concept (Monetary) For Period Credit wf:GainsLossesOnFinancialInstrumentsAtFairValueThroughProfitOrLoss
2637 24370201 - Disclosure - Gains Losses On Financial Assets At Fair Value Through Profit Or Loss Gains or losses on financial assets held for trading (Details) Network

*

*

 http://www.wooribank.com/role/GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLossGainsOrLossesOnFinancialAssetsHeldForTradingDetails
2638 Schedule of gain loss on investments [Table] Table

*

*

 us-gaap:ScheduleOfGainLossOnInvestmentsTable
2639 Gain loss on investments by category [Axis] Axis us-gaap:GainLossOnInvestmentsByCategoryAxis
2640 Gain loss on investments including marketable securities and investments held at cost categories of investments [Domain] Member us-gaap:GainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostCategoriesOfInvestmentsDomain
2641 Gain on financial instruments at fair value through profit or loss classified as held for trading [Member] Member wf:GainOnFinancialInstrumentsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingMember
2642 Gain on valuation Member wf:UnrealizedGainOnValuationOfFinancialInstrumentsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingMember
2643 Gain on disposals Member wf:RealizedGainOnTransactionOfFinancialInstrumentsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingMember
2644 Gain on transactions and valuation Member wf:UnrealizedAndRealizedGainOnFinancialInstrumentsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingMember
2645 Loss on financial instruments held for trading [Member] Member wf:LossOnFinancialInstrumentsHeldForTradingMember
2646 Loss on valuation Member wf:UnrealizedLossOnValuationOfFinancialInstrumentsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingMember
2647 Loss on disposals Member wf:RealizedLossOnTransactionOfFinancialInstrumentsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingMember
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2652 Securities Member wf:MarkeTableSecuritiesMember
2653 Other financial assets Member wf:OtherFinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingMember
2654 Derivatives (for trading) Member ifrs-full:DerivativesMember
2655 Interest rates derivatives Member ifrs-full:InterestRateSwapContractMember
2656 Currencies derivatives Member ifrs-full:CurrencySwapContractMember
2657 Equity derivatives Member us-gaap:EquityContractMember
2658 Other derivatives Member us-gaap:OtherContractMember
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2661 24370301 - Disclosure - Gains Losses On Financial Assets At Fair Value Through Profit Or Loss Gains or losses on financial assets designated at fair value through profit or loss (Details) Network

*

*

 http://www.wooribank.com/role/GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLossGainsOrLossesOnFinancialAssetsDesignatedAtFairValueThroughProfitOrLossDetails
2662 Schedule of gain loss on investments [Table] Table

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*

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2663 Gain loss on financial instruments at fair value through profit or loss designated upon initial recognition [Axis] Axis wf:GainLossOnFinancialInstrumentsAtFairValueThroughProfitOrLossDesignatedUponInitialRecognitionAxis
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2666 Net gains and losses on valuation Member wf:UnealizedGainLossOnValuationOfFinancialInstrumentsAtFairValueThroughProfitOrLossDesignatedUponInitialRecognitionMember
2667 Classes of financial instruments [Axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
2668 Classes of financial instruments [Domain] Member ifrs-full:ClassesOfFinancialInstrumentsMember
2669 Financial instruments at fair value through profit or loss designated as upon initial recognition category [Member] Member wf:FinancialInstrumentsAtFairValueThroughProfitOrLossDesignatedAsUponInitialRecognitionCategoryMember
2670 Equity-linked securities Member wf:EquityLinkedSecuritiesMember
2671 Securities Member wf:MarkeTableSecuritiesMember
2672 Other financial instruments Member wf:OtherFinancialInstrumentsAtFairValueThroughProfitOrLossDesignatedAsUponInitialRecognitionMember
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2675 24380101 - Disclosure - Net Loss On Available For Sale Financial Assets Gains or losses on Availableforsale financial (Details) Network

*

*

 http://www.wooribank.com/role/NetLossOnAvailableForSaleFinancialAssetsGainsOrLossesOnAvailableforsaleFinancialDetails
2676 Implied Table Table

*

*

 implied:Table
2677 Disclosure of gains losses recognised in profit or loss availableforsale financial assets [Abstract] Abstract wf:DisclosureOfGainsLossesRecognisedInProfitOrLossAvailableforsaleFinancialAssetsAbstract
2678 Gains on redemption of securities Concept (Monetary) For Period Credit wf:GainsLossesOnRedemptionOfAvailableForSaleFinancialAssets
2679 Gains on transaction of securities Concept (Monetary) For Period Credit us-gaap:AvailableForSaleSecuritiesGrossRealizedGainLossNet
2680 Impairment losses on securities Concept (Monetary) For Period Debit wf:ImpairmentLossOnAvailableforsaleFinancialAssets
2681 Total Concept (Monetary) For Period Credit wf:GainLossOnAvailableforsaleFinancialAssets
2682 24390101 - Disclosure - Impairment Losses Due To Credit Loss Impairment losses on loans and receivables guarantees and loan commitment recognized for credit loss (Details) Network

*

*

 http://www.wooribank.com/role/ImpairmentLossesDueToCreditLossImpairmentLossesOnLoansAndReceivablesGuaranteesAndLoanCommitmentRecognizedForCreditLossDetails
2683 Implied Table Table

*

*

 implied:Table
2684 Disclosure of impairment losses due to credit loss [Abstract] Abstract wf:DisclosureOfImpairmentLossesDueToCreditLossAbstract
2685 Provision due to credit loss Concept (Monetary) For Period ifrs-full:AdditionalAllowanceRecognisedInProfitOrLossAllowanceAccountForCreditLossesOfFinancialAssets
2686 Reversal of provision on (provision for) guarantees Concept (Monetary) For Period Debit wf:NetAddtionalProvisionUnusedProvisionReversedOfPaymentGuarantee
2687 Reversal of provision on (provision for) loan commitment Concept (Monetary) For Period Debit wf:NetAddtionalProvisionUnusedProvisionReversedOfProvisionForCreditCommitments
2688 Total Concept (Monetary) For Period Debit wf:ImpairmentLossesDueToCreditLoss
2689 24400101 - Disclosure - General Administrative And Other Net Operating Incomes Expenses Details of administrative expenses (Details) Network

*

*

 http://www.wooribank.com/role/GeneralAdministrativeAndOtherNetOperatingIncomesExpensesDetailsOfAdministrativeExpensesDetails
2690 Implied Table Table

*

*

 implied:Table
2691 General and administrative expense [Abstract] Abstract us-gaap:GeneralAndAdministrativeExpenseAbstract
2692 Employee benefits Abstract ifrs-full:ClassesOfEmployeeBenefitsExpenseAbstract
2693 Salaries Concept (Monetary) For Period Debit ifrs-full:WagesAndSalaries
2694 Employee benefits Concept (Monetary) For Period Debit ifrs-full:OtherShorttermEmployeeBenefits
2695 Retirement benefit service costs Concept (Monetary) For Period Debit us-gaap:PostemploymentBenefitsPeriodExpense
2696 Termination Concept (Monetary) For Period Debit ifrs-full:TerminationBenefitsExpense
2697 Sub total Concept (Monetary) For Period Debit ifrs-full:EmployeeBenefitsExpense
2698 Depreciation and amortisation expense [Abstract] Abstract ifrs-full:DepreciationAndAmortisationExpenseAbstract
2699 Depreciation and amortization Concept (Monetary) For Period Debit ifrs-full:DepreciationAndAmortisationExpense
2700 Other general and administrative expense [Abstract] Abstract wf:OtherGeneralAndAdministrativeExpenseAbstract
2701 Rent Concept (Monetary) For Period Debit ifrs-full:RentalExpense
2702 Taxes and dues Concept (Monetary) For Period Debit ifrs-full:TaxExpenseOtherThanIncomeTaxExpense
2703 Service charges Concept (Monetary) For Period Debit ifrs-full:ProfessionalFeesExpense
2704 IT expenses Concept (Monetary) For Period Debit wf:ElectronicsDataProcessingExpenses
2705 Telephone and communication Concept (Monetary) For Period Debit ifrs-full:CommunicationExpense
2706 Operating promotion expenses Concept (Monetary) For Period Debit us-gaap:MarketingExpense
2707 Advertising Concept (Monetary) For Period Debit ifrs-full:AdvertisingExpense
2708 Printing Concept (Monetary) For Period Debit wf:PublicationExpense
2709 Traveling expenses Concept (Monetary) For Period Debit ifrs-full:TravelExpense
2710 Supplies Concept (Monetary) For Period Debit us-gaap:SuppliesExpense
2711 Insurance premium Concept (Monetary) For Period Debit ifrs-full:InsuranceExpense
2712 Reimbursement Concept (Monetary) For Period Debit wf:ReimbursementExpense
2713 Maintenance Concept (Monetary) For Period Debit ifrs-full:RepairsAndMaintenanceExpense
2714 Water, light and heating Concept (Monetary) For Period Debit ifrs-full:UtilitiesExpense
2715 Vehicle maintenance Concept (Monetary) For Period Debit wf:VehicleMaintenanceExpense
2716 Others Concept (Monetary) For Period Debit us-gaap:OtherGeneralAndAdministrativeExpense
2717 Sub total Concept (Monetary) For Period Debit wf:TotalOfOtherGeneralAndAdministrativeExpense
2718 Total Concept (Monetary) For Period Debit ifrs-full:GeneralAndAdministrativeExpense
2719 Paid amount for defined contribution type pension plan Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedContributionPlans
2720 Expenses related to defined benefit type pension plan Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedBenefitPlans
2721 24400201 - Disclosure - General Administrative And Other Net Operating Incomes Expenses Details of other operating incomes (Details) Network

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*

 http://www.wooribank.com/role/GeneralAdministrativeAndOtherNetOperatingIncomesExpensesDetailsOfOtherOperatingIncomesDetails
2722 Implied Table Table

*

*

 implied:Table
2723 Other operating income [Abstract] Abstract wf:OtherOperatingIncomeAbstract
2724 Gains on transaction of foreign exchange Concept (Monetary) For Period Credit wf:ForeignExchangeGain
2725 Gains on disposal of loans and receivables Concept (Monetary) For Period Credit wf:GainsOnDispositionOfOtherFinancialAssets
2726 Gains on transactions of derivatives Concept (Monetary) For Period Credit wf:GainsOnChangeInValueOfDerivatives
2727 Gains on fair value hedged items Concept (Monetary) For Period Credit wf:GainsOnChangeInValueOfHedgedItem
2728 Others Concept (Monetary) For Period Credit ifrs-full:MiscellaneousOtherOperatingIncome
2729 Total Concept (Monetary) For Period Credit us-gaap:OtherOperatingIncome
2730 Income for payment to other creditor financial institutions Concept (Monetary) For Period Credit wf:IncomeForPaymentToOtherCreditorFinancialInstitutions
2731 24400301 - Disclosure - General Administrative And Other Net Operating Incomes Expenses Details of other operating expenses (Details) Network

*

*

 http://www.wooribank.com/role/GeneralAdministrativeAndOtherNetOperatingIncomesExpensesDetailsOfOtherOperatingExpensesDetails
2732 Implied Table Table

*

*

 implied:Table
2733 Other operating expenses [Abstract] Abstract wf:OtherOperatingExpensesAbstract
2734 Losses on transaction of foreign exchange Concept (Monetary) For Period Debit wf:ForeignExchangeLoss
2735 KDIC deposit insurance fees Concept (Monetary) For Period Debit wf:DepositInsuranceFees
2736 Contribution to miscellaneous funds Concept (Monetary) For Period Debit wf:ContributionToFunds
2737 Losses on disposal of loans and receivables Concept (Monetary) For Period Debit wf:LossesOnDispositionOfOtherFinancialAssets
2738 Losses related to derivatives Concept (Monetary) For Period Debit wf:LossesOnChangeInValueOfDerivatives
2739 Losses on fair value hedged items Concept (Monetary) For Period Debit wf:LossesOnChangeInValueOfHedgedItem
2740 Others Concept (Monetary) For Period Debit ifrs-full:MiscellaneousOtherOperatingExpense
2741 Total Concept (Monetary) For Period Debit wf:OtherOperatingExpenses
2742 Expenses for payment to other creditor financial institutions Concept (Monetary) For Period Debit wf:ExpensesForPaymentToOtherCreditorFinancialInstitutions
2743 24410101 - Disclosure - Other Net Non Operating Income Details of non operating incomes and expenses (Details) Network

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*

 http://www.wooribank.com/role/OtherNetNonOperatingIncomeDetailsOfGainOrLossOnValuationOfInvestmentsInJointVenturesAndAssociatesDetails
2744 Implied Table Table

*

*

 implied:Table
2745 Nonoperating income expense [Abstract] Abstract us-gaap:NonoperatingIncomeExpenseAbstract
2746 Gain or loss on valuation of investments in associates and joint ventures Abstract wf:DisclosureOfGainOrLossOnValuationOfInvestmentsInAssociatesAndJointVenturesAbstract
2747 Gain on valuation Concept (Monetary) For Period Credit wf:ShareOfProfitOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
2748 Loss on valuation Concept (Monetary) For Period Debit wf:ShareOfLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
2749 Impairment loss Concept (Monetary) For Period Debit wf:ImpairmentLossOfInvestmentsInAssociatesAndJointVentures
2750 Total Concept (Monetary) For Period Credit wf:GainLossOnAssociatesAndJointVenturesAccountsUsingEquityMethod
2751 Disclosure of other non operating income and expenses [Abstract] Abstract wf:DisclosureOfOtherNonOperatingIncomeAndExpensesAbstract
2752 Other income disclosure nonoperating [Abstract] Abstract us-gaap:OtherIncomeDisclosureNonoperatingAbstract
2753 Rental fee income Concept (Monetary) For Period Credit ifrs-full:RentalIncome
2754 Gains on disposal of investment in joint ventures and associates Concept (Monetary) For Period Credit wf:GainsOnDisposalOfInvestmentInAssociatesAndJointVentures
2755 Gains on disposal of premises and equipment and other assets Concept (Monetary) For Period Credit wf:GainsOnDisposalOfPremisesAndEquipmentAndOtherAssets
2756 Reversal of impairment loss on premises and equipment and other assets Concept (Monetary) For Period Credit wf:ReversalOfImpairmentLossOnPremisesAndEquipmentAndOtherAssets
2757 Others Concept (Monetary) For Period Credit wf:MiscellaneousNonOperatingIncome
2758 Total Concept (Monetary) For Period Credit us-gaap:OtherNonoperatingIncome
2759 Other expense disclosure nonoperating [Abstract] Abstract us-gaap:OtherExpenseDisclosureNonoperatingAbstract
2760 Depreciation on investment properties Concept (Monetary) For Period Debit wf:DepreciationExpenseInvestmentProperty
2761 Interest expenses of rent leasehold deposits Concept (Monetary) For Period Debit wf:InterestExpensesOfRentLeaseholdDeposits
2762 Losses on disposal of investment in joint ventures and associates Concept (Monetary) For Period Debit wf:LossesOnDisposalOfInvestmentInAssociatesAndJointVentures
2763 Losses on disposal of premises and equipment and other assets Concept (Monetary) For Period Debit wf:LossesOnDisposalOfPremisesAndEquipmentAndOtherAssets
2764 Impairment losses on premises and equipment and other assets Concept (Monetary) For Period Debit wf:ImpairmentLossesOnPremisesAndEquipmentAndOtherAssets
2765 Donation Concept (Monetary) For Period Debit ifrs-full:DonationsAndSubsidiesExpense
2766 Others Concept (Monetary) For Period Debit wf:MiscellaneousNonOperatingExpense
2767 Total Concept (Monetary) For Period Debit us-gaap:OtherNonoperatingExpense
2768 Total Concept (Monetary) For Period Credit us-gaap:OtherNonoperatingIncomeExpense
2769 Gains losses on litigation settlements Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnLitigationSettlements
2770 24420101 - Disclosure - Income Tax Expense Details of income tax expenses (Details) Network

*

*

 http://www.wooribank.com/role/IncomeTaxExpenseDetailsOfIncomeTaxExpensesDetails
2771 Implied Table Table

*

*

 implied:Table
2772 Major components of tax expense (income) [Abstract] Abstract ifrs-full:MajorComponentsOfTaxExpenseIncomeAbstract
2773 Current tax expense Abstract ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriodsAbstract
2774 Current tax expense in respect of the current year Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncome
2775 Adjustments recognized in the current period in relation to the current tax of prior periods Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForCurrentTaxOfPriorPeriod
2776 Sub total Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods
2777 Deferred tax expense Abstract ifrs-full:DeferredTaxExpenseIncomeAbstract
2778 Deferred tax expense (benefit) relating to the origination and reversal of temporary differences Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseIncomeRelatingToOriginationAndReversalOfTemporaryDifferences
2779 Deferred tax charged directly to other comprehensive income Concept (Monetary) For Period ifrs-full:DeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity
2780 Sub total Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseIncome
2781 Income tax expense Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
2782 24420201 - Disclosure - Income Tax Expense Relationship between net income loss before income tax expense and Income tax expense benefit (Details) Network

*

*

 http://www.wooribank.com/role/IncomeTaxExpenseRelationshipBetweenNetIncomeLossBeforeIncomeTaxExpenseAndIncomeTaxExpenseBenefitDetails
2783 Implied Table Table

*

*

 implied:Table
2784 Reconciliation of accounting profit multiplied by applicable tax rates [Abstract] Abstract ifrs-full:ReconciliationOfAccountingProfitMultipliedByApplicableTaxRatesAbstract
2785 Net income before income tax expense Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
2786 Tax calculated at statutory tax rate Concept (Monetary) For Period Debit ifrs-full:TaxExpenseIncomeAtApplicableTaxRate
2787 Adjustments: Abstract ifrs-full:AdjustmentsForReconcileProfitLossAbstract
2788 Effect of income that is exempt from taxation Concept (Monetary) For Period Credit ifrs-full:TaxEffectOfRevenuesExemptFromTaxation2011
2789 Effect of expense that is not deductible in determining taxable profit Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss
2790 Adjustments recognized in the current period in relation to the current tax of prior periods Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForCurrentTaxOfPriorPeriod
2791 Effect on deferred tax balances due to the change in income tax rate from 24.2% to 27.5% (effective January 1, 2018) Concept (Monetary) For Period Debit ifrs-full:TaxEffectFromChangeInTaxRate
2792 Others Concept (Monetary) For Period Debit ifrs-full:OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome
2793 Sub total Concept (Monetary) For Period Debit wf:AdjustmentsForReconciliationOfAccountingProfitMultipliedByApplicableTaxRates
2794 Income tax expense Concept (Monetary) For Period Debit us-gaap:IncomeTaxExpenseBenefit
2795 Effective tax rate Concept (Percent) For Period ifrs-full:AverageEffectiveTaxRate
2796 Description of applicable tax rate by taxable income Concept (Text/String) For Period wf:DescriptionOfApplicableTaxRateByTaxableIncome
2797 24420301 - Disclosure - Income Tax Expense Details of Temporary differences unused tax losses and credits (Details) Network

*

*

 http://www.wooribank.com/role/IncomeTaxExpenseChangesInDeferredTaxAssetsAndLiabilitiesDetails
2798 Disclosure of temporary difference unused tax losses and unused tax credits [Table] Table

*

*

 ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
2799 Temporary difference unused tax losses and unused tax credits [Axis] Axis ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
2800 Temporary difference unused tax losses and unused tax credits [Domain] Member ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
2801 Gain (loss) on financial assets Member wf:GainsLossesOnFinancialAssetsMember
2802 Gain (loss) on financial assets at FVTPL Member wf:GainsLossesOnFinancialInstrumentsAtFairValueThroughProfitOrLossMember
2803 Gain (loss) on available for sale financial assets Member ifrs-full:ReserveOfGainsAndLossesOnRemeasuringAvailableforsaleFinancialAssetsMember
2804 Gain (loss) on valuation using the equity method of accounting Member ifrs-full:ReserveOfGainsAndLossesFromInvestmentsInEquityInstrumentsMember
2805 Gain (loss) on valuation of derivatives Member wf:GainsLossesFromValuationOnDerivativeFinancialInstrumentsMember
2806 Accrued income Member wf:AccruedIncomeMember
2807 Provision for loan losses Member ifrs-full:AllowanceForCreditLossesMember
2808 Loan and receivables written off Member wf:LoanAndReceivablesWrittenOffMember
2809 Loan origination costs and fees Member wf:DeferredLoanOriginationFeesAndCostsMember
2810 Defined benefit liability Member ifrs-full:PresentValueOfDefinedBenefitObligationMember
2811 Deposits with employee retirement insurance trust Member ifrs-full:PlanAssetsMember
2812 Provision for guarantee Member ifrs-full:FinancialGuaranteeContractsMember
2813 Other provisions Member ifrs-full:MiscellaneousOtherProvisionsMember
2814 Others Member ifrs-full:OtherTemporaryDifferencesMember
2815 Disclosure of temporary difference unused tax losses and unused tax credits [Line Items] LineItems ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
2816 Reconciliation of changes in deferred tax liability asset [Abstract] Abstract ifrs-full:ReconciliationOfChangesInDeferredTaxLiabilityAssetAbstract
2817 Beginning balance Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
2818 Changes in deferred tax liability asset [Abstract] Abstract ifrs-full:ChangesInDeferredTaxLiabilityAssetAbstract
2819 Recognized as income (expense) Concept (Monetary) For Period ifrs-full:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
2820 Recognized as other comprehensive income (expense) Concept (Monetary) For Period ifrs-full:DeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity
2821 Ending balance Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
2822 Description of composition of other termporary differences Concept (Text/String) For Period wf:DescriptionOfCompositionOfOtherTemporaryDifferences
2823 24420401 - Disclosure - Income Tax Expense Unrecognized temporary differences (Details) Network

*

*

 http://www.wooribank.com/role/IncomeTaxExpenseUnrecognizedTemporaryDifferencesDetails
2824 Implied Table Table

*

*

 implied:Table
2825 Disclosure of unrecognized temporary difference unused tax losses and unused tax credits [Abstract] Abstract wf:DisclosureOfUnrecognizedTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAbstract
2826 Deductible temporary differences Concept (Monetary) As Of ifrs-full:DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised
2827 Unused tax losses Concept (Monetary) As Of ifrs-full:UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised
2828 Taxable temporary differences Concept (Monetary) As Of Debit wf:TaxableTemporaryDifferencesForWhichNoDeferredTaxLiabilitiestIsRecognised
2829 Total Concept (Monetary) As Of Credit wf:UnrecognizedTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCredits
2830 24420501 - Disclosure - Income Tax Expense Deferred tax charged directly to other comprehensive income (Details) Network

*

*

 http://www.wooribank.com/role/IncomeTaxExpenseDeferredTaxChargedDirectlyToOtherComprehensiveIncomeDetails
2831 Implied Table Table

*

*

 implied:Table
2832 Disclosure of deferred tax relating to items charged or credited directly to equity [Abstract] Abstract wf:DisclosureOfDeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquityAbstract
2833 Loss on available for sale financial assets Concept (Monetary) For Period Credit wf:GainsLossesOnRemeasuringAvailableforsaleFinancialAssetsDeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity
2834 Share of other comprehensive gain (loss) of joint ventures and associates Concept (Monetary) For Period Credit wf:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodDeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity
2835 Gain on foreign operations translation Concept (Monetary) For Period Credit wf:OtherComprehensiveIncomeExchangeDifferencesOnTranslationDeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity
2836 Remeasurements Concept (Monetary) For Period Credit wf:OtherComprehensiveIncomeGainsLossesOnRemeasurementsOfDefinedBenefitPlansDeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity
2837 Loss on valuation of cash flow hedges Concept (Monetary) For Period Credit wf:OtherComprehensiveIncomeGainsLossesOnValuationOfCashFlowHedgesDeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity
2838 Total Concept (Monetary) For Period Credit wf:DeferredTaxChargedDirectlyToOtherComprehensiveIncome
2839 24420601 - Disclosure - Income Tax Expense Current tax assets and liabilities (Details) Network

*

*

 http://www.wooribank.com/role/IncomeTaxExpenseCurrentTaxAssetsAndLiabilitiesDetails
2840 Implied Table Table

*

*

 implied:Table
2841 Disclosure of current tax assets liabilities [Abstract] Abstract wf:DisclosureOfCurrentTaxAssetsLiabilitiesAbstract
2842 Current tax assets Concept (Monetary) As Of Debit ifrs-full:CurrentTaxAssets
2843 Current tax liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentTaxLiabilities
2844 24420701 - Disclosure - Income Tax Expense Deferred tax assets and liabilities (Details) Network

*

*

 http://www.wooribank.com/role/IncomeTaxExpenseDeferredTaxAssetsAndLiabilitiesDetails
2845 Implied Table Table

*

*

 implied:Table
2846 Deferred tax assets and liabilities [Abstract] Abstract ifrs-full:DeferredTaxAssetsAndLiabilitiesAbstract
2847 Deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
2848 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
2849 Net deferred tax assets Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
2850 24430101 - Disclosure - Earnings Per Share Details of earnings per share (Details) Network

*

*

 http://www.wooribank.com/role/EarningsPerShareDetailsOfEarningsPerShareDetails
2851 Implied Table Table

*

*

 implied:Table
2852 Earnings per share [Abstract] Abstract ifrs-full:EarningsPerShareAbstract
2853 Basic earnings per share [Abstract] Abstract ifrs-full:BasicEarningsPerShareAbstract
2854 Net income attributable to common shareholders Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOwnersOfParent
2855 Dividends to hybrid securities Concept (Monetary) For Period Debit ifrs-full:AdjustmentToProfitLossForPreferenceShareDividends
2856 Net income attributable to common shareholders Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOrdinaryEquityHoldersOfParentEntity
2857 Net income from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperationsAttributableToOrdinaryEquityHoldersOfParentEntity
2858 Net income from discontinued operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromDiscontinuedOperationsAttributableToOrdinaryEquityHoldersOfParentEntity
2859 Weighted average number of common shares outstanding Concept (Shares) For Period ifrs-full:WeightedAverageShares
2860 Basic Earnings Per Share Concept (Share) For Period ifrs-full:BasicEarningsLossPerShare
2861 Basic Earnings Per Share for continuing operations Concept (Share) For Period ifrs-full:BasicEarningsLossPerShareFromContinuingOperations
2862 Basic Earnings Per Share for discontinued operations Concept (Share) For Period ifrs-full:BasicEarningsLossPerShareFromDiscontinuedOperations
2863 Diluted earnings per share [Abstract] Abstract ifrs-full:DilutedEarningsPerShareAbstract
2864 Diluted earnings loss per share Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShare
2865 24440101 - Disclosure - Contingent Liabilities And Commitments Details of contingent liabilities (Details) Network

*

*

 http://www.wooribank.com/role/ContingentLiabilitiesAndCommitmentsDetailsOfContingentLiabilitiesDetails
2866 Disclosure of contingent liabilities [Table] Table

*

*

 ifrs-full:DisclosureOfContingentLiabilitiesTable
2867 Classes of contingent liabilities [Axis] Axis ifrs-full:ClassesOfContingentLiabilitiesAxis
2868 Contingent liabilities [Domain] Member ifrs-full:ContingentLiabilitiesMember
2869 Confirmed guarantees Member wf:ConfirmedAcceptancesAndPaymentGuaranteesMember
2870 Guarantee for loans Member wf:PaymentGuaranteesForLoansMember
2871 Acceptances Member us-gaap:BankersAcceptanceMember
2872 Letters of guarantees Member wf:LetterOfGuaranteesMember
2873 Other confirmed guarantees Member wf:OtherConfirmedPaymentGuaranteesMember
2874 Unconfirmed guarantees Member wf:UnconfirmedAcceptancesAndPaymentGuaranteesMember
2875 Local letter of credit Member wf:GuaranteesOfDomesticLetterOfCreditMember
2876 Letter of credit Member wf:GuaranteesOfForeignLetterOfCreditMember
2877 Other unconfirmed guarantees Member wf:OtherUnconfirmedPaymentGuaranteesMember
2878 CP purchase commitments and others Member wf:CommercialPaperPuchaseAndOthersCommitmentsMember
2879 Contingent liability for commitments [Member] Member wf:ContingentLiabilityForCommitmentsMember
2880 Loan commitments Member ifrs-full:LoanCommitmentsMember
2881 Other commitments Member wf:OtherContingentLiabilityForCommitmentMember
2882 filed lawsuits Member ifrs-full:LegalProceedingsContingentLiabilityMember
2883 Law suits as plaintiff in the normal course of the business [Member] Member wf:LawSuitsAsPlaintiffInTheNormalCourseOfTheBusinessMember
2884 Law suits as defendant in the normal course of the business [Member] Member wf:LawSuitsAsDefendantInTheNormalCourseOfTheBusinessMember
2885 Settled litigation [Member] Member us-gaap:SettledLitigationMember
2886 Other Member ifrs-full:OtherContingentLiabilitiesMember
2887 Disclosure of contingent liabilities [Line Items] LineItems ifrs-full:DisclosureOfContingentLiabilitiesLineItems
2888 Total of confirmed guarantees Concept (Monetary) As Of Credit wf:ContingentLiabilityForConfirmedPaymentGuarantees
2889 Total of unconfirmed guarantees Concept (Monetary) As Of Credit wf:ContingentLiabilityForUnconfirmedPaymentGuarantees
2890 Commercial paper puchase and others commitments Concept (Monetary) As Of Credit wf:CommercialPaperPuchaseAndOthersCommitments
2891 Loan commitments Concept (Monetary) As Of Credit wf:ContractualOutstandingsOfLoanCommitments
2892 Other commitments Concept (Monetary) As Of Credit wf:OtherCommitments
2893 Number of cases as plaintiffs Concept (Integer) For Period us-gaap:LossContingencyNumberOfPlaintiffs
2894 Number of cases as defendants Concept (Integer) For Period us-gaap:LossContingencyNumberOfDefendants
2895 Amount of litigation as plaintiff Concept (Monetary) For Period Credit wf:AmountOfLitigationSoughtAsPlaintiff
2896 Amount of litigation as defendant Concept (Monetary) For Period Debit us-gaap:LossContingencyDamagesSoughtValue
2897 Allowance for litigations Concept (Monetary) As Of Credit ifrs-full:LegalProceedingsProvision
2898 Gains and losses on litigation settlements Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnLitigationSettlements
2899 Description of gain related to litigation settlement Concept (Text/String) For Period wf:DescriptionOfGainRelatedToLitigationSettlement
2900 Information about contingent liabilities that disclosure is not practicable Concept (Text/String) For Period ifrs-full:InformationAboutContingentLiabilitiesThatDisclosureIsNotPracticable
2901 Indication of uncertainties of amount or timing of outflows contingent liabilities Concept (Text/String) For Period ifrs-full:IndicationOfUncertaintiesOfAmountOrTimingOfOutflowsContingentLiabilities
2902 24450101 - Disclosure - Related Party Transactions Details of related parties transactions (Details) Network

*

*

 http://www.wooribank.com/role/RelatedPartyTransactionsDetailsOfRelatedPartiesTransactionsDetails
2903 Disclosure of transactions between related parties [Table] Table

*

*

 ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
2904 Categories of related parties [Axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
2905 Entitys total for related parties [Domain] Member ifrs-full:EntitysTotalForRelatedPartiesMember
2906 Related parties [Member] Member ifrs-full:RelatedPartiesMember
2907 Corporation that have significant influence over the group Member ifrs-full:JointControlOrSignificantInfluenceMember
2908 KDIC Member wf:KoreaDepositInsuranceCorporationMember
2909 Associates Member ifrs-full:AssociatesMember
2910 Kumho Tires Co Inc Member wf:KumhoTiresCoLtdMember
2911 Woori Blackstone Korea Opportunity Private Equity Fund No.1 Member wf:WooriBlackstoneKoreaOpportunityPrivateEquityFundNoOneMember
2912 Woori Service Networks Co Ltd Member wf:WooriServiceNetworksCoLtdMember
2913 Korea Credit Bureau Co Ltd Member wf:KoreaCreditBureauCoLtdMember
2914 Korea Finance Security Co Ltd Member wf:KoreaFinanceSecurityCoLtdMember
2915 Chin Hung International Inc Member wf:ChinHungInternationalIncMember
2916 Poonglim Industrial Co Ltd Member wf:PoonglimIndustrialCoLtdMember
2917 STX Engine Co Ltd Member wf:STXEngineCoLtdMember
2918 Samho International Co Ltd Member wf:SamHoCoLtdMember
2919 Force TEC Co Ltd Member wf:ForceTECCoLtdMember
2920 Hana Engineering and Construction Co Ltd Member wf:HanaEngineeringAndConstructionCoLtdMember
2921 STX Corporation Member wf:STXCorporationMember
2922 Osung LST Co Ltd Member wf:OsungLSTCoLtdMember
2923 Ilyang Construction Co Ltd Member wf:IlyangConstructionCoLtdMember
2924 Woori Columbus First Private Equity Fund Member wf:WooriColumbusFirstPrivateEquityFundMember
2925 K BANK Co Ltd Member wf:KBankCoLtdMember
2926 Well to Sea No.3 Private Equity Fund Member wf:WelltoSeaNo3PrivateEquityFundMember
2927 Others Member ifrs-full:OtherRelatedPartiesMember
2928 Ansang Tech Co Ltd Member wf:AnsangTechCoLtdMember
2929 Key management personnel of entity or parent [Member] Member ifrs-full:KeyManagementPersonnelOfEntityOrParentMember
2930 Registered executive [Member] Member wf:RegisteredExecutiveMember
2931 Non registered executive [Member] Member wf:NonRegisteredExecutiveMember
2932 Disclosure of transactions between related parties [Line Items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2933 Outstanding balances for related party transactions [Abstract] Abstract ifrs-full:OutstandingBalancesForRelatedPartyTransactionsAbstract
2934 Loans Concept (Monetary) As Of Debit wf:LoansAndReceivablesGrossAmountRelatedPartyTransactions
2935 Allowance for credit loss Concept (Monetary) As Of Credit wf:AllowancesForLoanLossesRelatedPartyTransactions
2936 Other assets Concept (Monetary) As Of Debit wf:OtherAssetsRelatedPartyTransactions
2937 Outstanding receivables from transaction with key management Concept (Monetary) As Of Debit wf:AmountsReceivableKeyMangementPersonnel
2938 Outstanding payables from transaction with key management Concept (Monetary) As Of Credit wf:AmountsPayableKeyMangementPersonnel
2939 Deposits due to customers Concept (Monetary) As Of Credit us-gaap:RelatedPartyDepositLiabilities
2940 Other liabilities Concept (Monetary) As Of Credit wf:OtherLiabilitiesRelatedPartyTransactions
2941 Related party transactions [Abstract] Abstract ifrs-full:RelatedPartyTransactionsAbstract
2942 Interest income Concept (Monetary) For Period Credit us-gaap:InterestIncomeRelatedParty
2943 Interest expenses Concept (Monetary) For Period Debit us-gaap:InterestExpenseRelatedParty
2944 Fees income Concept (Monetary) For Period Credit wf:FeeAndCommissionIncomeRelatedPartyTransactions
2945 Fees expenses Concept (Monetary) For Period Debit wf:FeeAndCommissionExpenseRelatedPartyTransactions
2946 Impairment losses due to credit loss Concept (Monetary) For Period Credit wf:ImpairmentLossDueToReversalAndProvisionForCreditLossRelatedPartyTransactions
2947 Other income Concept (Monetary) For Period Credit wf:OtherOperatingIncomeRelatedPartyTransactions
2948 Other expenses Concept (Monetary) For Period Debit wf:OtherOperatingExpenseRelatedPartyTransactions
2949 Disclosure of outstanding commitments made by entity related party transactions [Abstract] Abstract wf:DisclosureOfOutstandingCommitmentsMadeByEntityRelatedPartyTransactionsAbstract
2950 Loan commitment Concept (Monetary) As Of Credit wf:LoanCommitmentsToRelatedParties
2951 Letter of credit and others Concept (Monetary) As Of Credit wf:LetterOfCreditAndOthersToRelatedParties
2952 Payment guarantees to related parties Concept (Monetary) As Of Credit wf:ProvisionForCommitmentLetterOfCreditsAndOthers
2953 Description of nature of related party relationship Concept (Text/String) For Period ifrs-full:DescriptionOfNatureOfRelatedPartyRelationship
2954 Description of changes of ownership interest of related party Concept (Text/String) For Period wf:DescriptionOfChangesOfOwnershipInterestOfRelatedParty
2955 Description of other related parties with outstanding balances Concept (Text/String) For Period wf:DescriptionOfOtherRelatedPartiesWithOutstandingBalancesExplanatory
2956 Description of other related parties with transactions Concept (Text/String) For Period wf:DescriptionOfOtherRelatedPartiesWithTransactionsExplanatory
2957 24450501 - Disclosure - Related Party Transactions Compensation for key management (Details) Network

*

*

 http://www.wooribank.com/role/RelatedPartyTransactionsCompensationForKeyManagementDetails
2958 Implied Table Table

*

*

 implied:Table
2959 Disclosure of amounts incurred by entity for provision of key management personnel services provided by separate management entities [Abstract] Abstract ifrs-full:DisclosureOfAmountsIncurredByEntityForProvisionOfKeyManagementPersonnelServicesProvidedBySeparateManagementEntitiesAbstract
2960 Short term benefits Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationShorttermEmployeeBenefits
2961 Severance payments Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationPostemploymentBenefits
2962 Total Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensation
2963 Description of nature of key management personnel Concept (Text/String) For Period wf:DescriptionOfNatureOfKeyManagementPersonnel
2964 Description of provisions to outstanding balances of key management personnel Concept (Text/String) For Period wf:DescriptionOfProvisionsToOutstandingBalancesOfKeyManagementPersonnel
2965 24460101 - Disclosure - Business Combination Details of Business combination (Details) Network

*

*

 http://www.wooribank.com/role/BusinessCombinationDetailsOfBusinessCombinationDetails
2966 Disclosure of business combinations [Table] Table

*

*

 ifrs-full:DisclosureOfBusinessCombinationsTable
2967 Business combinations [Axis] Axis ifrs-full:BusinessCombinationsAxis
2968 Entitys total for business combinations [Domain] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
2969 Business combination in 2016 Member wf:BusinesscombinationIn2016Member
2970 Woori Wealth Bank in Philippines Member wf:WealthDevelopmentBankMember
2971 Woori Bank Vietnam Limited Member wf:WooriBankVietnamLimitedMember
2972 Disclosure of business combinations [Line Items] LineItems ifrs-full:DisclosureOfBusinessCombinationsLineItems
2973 Name of acquirer Concept (Text/String) For Period wf:NameOfAcquirer
2974 Name of acquiree Concept (Text/String) For Period ifrs-full:NameOfAcquiree
2975 Description of acquiree Concept (Text/String) For Period ifrs-full:DescriptionOfAcquiree
2976 Date of acquisition Concept (Text/String) For Period wf:DescriptionOfDateOfAcquisition
2977 Percentage of voting equity interests acquired Concept (Percent) As Of ifrs-full:PercentageOfVotingEquityInterestsAcquired
2978 Description of primary reasons for business combination Concept (Text/String) For Period ifrs-full:DescriptionOfPrimaryReasonsForBusinessCombination
2979 I. Consideration Abstract ifrs-full:AcquisitiondateFairValueOfTotalConsiderationTransferredAbstract
2980 Cash and Cash equivalents Concept (Monetary) As Of Credit ifrs-full:CashTransferred
2981 II. Identifiable assets and liabilities Abstract ifrs-full:AmountsRecognisedAsOfAcquisitionDateForEachMajorClassOfAssetsAcquiredAndLiabilitiesAssumedAbstract
2982 Cash and Cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalentsRecognisedAsOfAcquisitionDate
2983 AFS financial assets Concept (Monetary) As Of Debit wf:AvailableForSaleFinancialAssetsRecognisedAsOfAcquisitionDate
2984 Loan and receivables Concept (Monetary) As Of Debit wf:LoansAndReceivablesRecognisedAsOfAcquisitionDate
2985 Property and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipmentRecognisedAsOfAcquisitionDate
2986 Intangible assets Concept (Monetary) As Of Debit ifrs-full:IdentifiableIntangibleAssetsRecognisedAsOfAcquisitionDate
2987 Other assets Concept (Monetary) As Of Debit wf:OtherAssetsRecognisedAsOfAcquisitionDate
2988 Sub-total Concept (Monetary) As Of Debit us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets
2989 Deposits Concept (Monetary) As Of Credit wf:DepositsLiabilitiesRecognisedAsOfAcquisitionDate
2990 Allowance for credit losses Concept (Monetary) As Of Credit wf:AllowanceForCreditLossesRecognisedAsOfAcquisitionDate
2991 Other liabilities Concept (Monetary) As Of Credit wf:OtherLiabilitiesRecognisedAsOfAcquisitionDate
2992 Sub-total Concept (Monetary) As Of Credit us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
2993 Fair value of identifiable net asset Concept (Monetary) As Of Debit ifrs-full:IdentifiableAssetsAcquiredLiabilitiesAssumed
2994 III. Non-controlling interest Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterestInAcquireeRecognisedAtAcquisitionDate
2995 IV. Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
2996 24470101 - Disclosure - Subsequent Event Description of subsequent events after reporting periods (Details) Network

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 http://www.wooribank.com/role/SubsequentEventDescriptionOfSubsequentEventsAfterReportingPeriodsDetails
2997 Implied Table Table

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 implied:Table
2998 Disclosure of non-adjusting events after reporting period [Abstract] Abstract ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodAbstract
2999 Disclosure of nonadjusting events after reporting period Concept (Text/String) For Period ifrs-full:DescriptionOfNatureOfNonadjustingEventAfterReportingPeriod

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