MILLICOM INTERNATIONAL CELLULAR SA (SEC Filing Page | XBRL Cloud Viewer | XBRL Instance)

Line Label Object Class Period Type Balance Report ElementName
1 0001000 - Document - Document and entity information Network

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 http://millicom.com/role/DocumentAndEntityInformation
2 Implied Table Table

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3 Document And Entity Information [Abstract] Abstract tigo: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 Amendment Flag Concept (Yes/No) For Period dei:AmendmentFlag
8 Entity Current Reporting Status Concept (Yes/No) For Period dei:EntityCurrentReportingStatus
9 Current Fiscal Year End Date Concept (Month/Day) For Period dei:CurrentFiscalYearEndDate
10 Entity Filer Category Concept (Filer Category) For Period dei:EntityFilerCategory
11 Entity Well-known Seasoned Issuer Concept (Yes/No) For Period dei:EntityWellKnownSeasonedIssuer
12 Entity Common Stock, Shares Outstanding Concept (Shares) As Of dei:EntityCommonStockSharesOutstanding
13 Document Fiscal Year Focus Concept (Year) For Period dei:DocumentFiscalYearFocus
14 Document Fiscal Period Focus Concept (Fiscal Period) For Period dei:DocumentFiscalPeriodFocus
15 Document Period End Date Concept (Date) For Period dei:DocumentPeriodEndDate
16 Entity Shell Company Concept (Yes/No) For Period dei:EntityShellCompany
17 Entity Emerging Growth Company Concept (Yes/No) For Period dei:EntityEmergingGrowthCompany
18 1001000 - Statement - Consolidated statement of income Network

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 http://millicom.com/role/ConsolidatedStatementOfIncome
19 Implied Table Table

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20 Profit or loss [abstract] Abstract ifrs-full:IncomeStatementAbstract
21 Revenue Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
22 Cost of sales Concept (Monetary) For Period Debit ifrs-full:CostOfSales
23 Gross profit Concept (Monetary) For Period Credit ifrs-full:GrossProfit
24 Operating expenses Concept (Monetary) For Period Debit ifrs-full:OperatingExpenseExcludingCostOfSales
25 Depreciation Concept (Monetary) For Period Debit ifrs-full:DepreciationExpense
26 Amortization Concept (Monetary) For Period Debit ifrs-full:AmortisationExpense
27 Share of profit in joint ventures in Guatemala and Honduras Concept (Monetary) For Period Credit tigo:ShareOfProfitLossOfJointVenturesAccountedForUsingEquityMethodOperating
28 Other operating income (expenses), net Concept (Monetary) For Period Credit ifrs-full:OtherOperatingIncomeExpense
29 Operating profit Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
30 Interest and other financial expenses Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
31 Interest and other financial income Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
32 Other non-operating (expenses) income, net Concept (Monetary) For Period Credit tigo:OtherNonOperatingIncomeExpense
33 Profit (loss) from other joint ventures and associates, net Concept (Monetary) For Period Credit tigo:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethodNonoperating
34 Profit before taxes from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
35 Charge for taxes, net Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
36 Profit (loss) for the year from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperations
37 Profit (loss) for the year from discontinued operations, net of tax Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromDiscontinuedOperations
38 Net profit (loss) for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
39 Net profit (loss) for the year Attributable to: Abstract ifrs-full:ProfitLossAttributableToAbstract
40 The owners of Millicom Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOwnersOfParent
41 Non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
42 Earnings (loss) per common share for profit (loss) attributable to the owners of the Company: Abstract ifrs-full:EarningsPerShareAbstract
43 Basic (US$ per common share): Abstract ifrs-full:BasicEarningsPerShareAbstract
44 — from continuing operations (usd per share) Concept (Share) For Period ifrs-full:BasicEarningsLossPerShareFromContinuingOperations
45 — from discontinued operations (usd per share) Concept (Share) For Period ifrs-full:BasicEarningsLossPerShareFromDiscontinuedOperations
46 — total (usd per share) Concept (Share) For Period ifrs-full:BasicEarningsLossPerShare
47 Diluted (US$ per common share): Abstract ifrs-full:DilutedEarningsPerShareAbstract
48 — from continuing operations (usd per share) Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShareFromContinuingOperations
49 — from discontinued operations (usd per share) Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShareFromDiscontinuedOperations
50 —total (usd per share) Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShare
51 1002000 - Statement - Consolidated statement of comprehensive income Statement Network

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 http://millicom.com/role/ConsolidatedStatementOfComprehensiveIncomeStatement
52 Implied Table Table

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53 Statement of comprehensive income [abstract] Abstract ifrs-full:StatementOfComprehensiveIncomeAbstract
54 Profit (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
55 Other comprehensive income (to be reclassified to the statement of income in subsequent periods), net of tax: Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract
56 Change in value of cash flow hedges, net of tax effects Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation
57 Other comprehensive income (not to be reclassified to the statement of income in subsequent periods), net of tax: Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxCashFlowHedges
58 Other comprehensive income (not to be reclassified to the statement of income in subsequent periods), net of tax: Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTaxAbstract
59 Remeasurements of post-employment benefit obligations, net of tax effects Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
60 Total comprehensive income (loss) for the year Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
61 Attributable to: Abstract ifrs-full:ComprehensiveIncomeAttributableToAbstract
62 Owners of the Company Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToOwnersOfParent
63 Non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToNoncontrollingInterests
64 Total comprehensive income (loss) for the year arises from: Abstract tigo:ComprehensiveIncomeArisingFromAbstract
65 Continuing operations Concept (Monetary) For Period Credit tigo:ComprehensiveIncomeFromContinuingOperations
66 Discontinued operations Concept (Monetary) For Period Credit tigo:ComprehensiveIncomeFromDiscontinuedOperations
67 1003000 - Statement - Consolidated statement of financial position Network

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68 Implied Table Table

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69 Statement of financial position [abstract] Abstract ifrs-full:StatementOfFinancialPositionAbstract
70 ASSETS Abstract ifrs-full:AssetsAbstract
71 NON-CURRENT ASSETS Abstract ifrs-full:NoncurrentAssetsAbstract
72 Intangible assets, net Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsOtherThanGoodwill
73 Property, plant and equipment, net Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
74 Investments in joint ventures Concept (Monetary) As Of Debit ifrs-full:InvestmentsInJointVenturesAccountedForUsingEquityMethod
75 Investments in associates Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociatesAccountedForUsingEquityMethod
76 Contract costs, net Concept (Monetary) As Of Debit ifrs-full:NoncurrentContractAssets
77 Deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
78 Derivative financial instruments Concept (Monetary) As Of Debit ifrs-full:NoncurrentDerivativeFinancialAssets
79 Other non-current assets Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentAssets
80 TOTAL NON-CURRENT ASSETS Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
81 CURRENT ASSETS Abstract ifrs-full:CurrentAssetsAbstract
82 Inventories, net Concept (Monetary) As Of Debit ifrs-full:Inventories
83 Trade receivables, net Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
84 Contract assets, net Concept (Monetary) As Of Debit ifrs-full:CurrentContractAssets
85 Amounts due from non-controlling interests, associates and joint ventures Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivablesDueFromRelatedParties
86 Prepayments and accrued income Concept (Monetary) As Of Debit ifrs-full:CurrentPrepaymentsAndCurrentAccruedIncome
87 Current income tax assets Concept (Monetary) As Of Debit ifrs-full:CurrentTaxAssetsCurrent
88 Supplier advances for capital expenditure Concept (Monetary) As Of Debit ifrs-full:CurrentAdvancesToSuppliers
89 Other current assets Concept (Monetary) As Of Debit ifrs-full:OtherCurrentAssets
90 Restricted cash Concept (Monetary) As Of Debit ifrs-full:RestrictedCashAndCashEquivalents
91 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
92 TOTAL CURRENT ASSETS Concept (Monetary) As Of Debit ifrs-full:CurrentAssetsOtherThanAssetsOrDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwners
93 Assets held for sale Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwners
94 TOTAL ASSETS Concept (Monetary) As Of Debit ifrs-full:Assets
95 EQUITY AND LIABILITIES Abstract ifrs-full:EquityAndLiabilitiesAbstract
96 EQUITY Abstract ifrs-full:EquityAbstract
97 Share capital and premium Concept (Monetary) As Of Credit tigo:IssuedCapitalAndSharePremium
98 Treasury shares Concept (Monetary) As Of Debit ifrs-full:TreasuryShares
99 Other reserves Concept (Monetary) As Of Credit ifrs-full:OtherReserves
100 Retained profits Concept (Monetary) As Of Credit ifrs-full:RetainedEarnings
101 Profit (loss) for the year attributable to equity holders Concept (Monetary) As Of Credit tigo:ProfitLossForTheYearAttributableToEquityHolders
102 Equity attributable to owners of the Company Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
103 Non-controlling interests Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
104 TOTAL EQUITY Concept (Monetary) As Of Credit ifrs-full:Equity
105 LIABILITIES Abstract ifrs-full:LiabilitiesAbstract
106 Non-current liabilities [abstract] Abstract ifrs-full:NoncurrentLiabilitiesAbstract
107 Debt and financing Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
108 Amounts due to non-controlling interests, associates and joint ventures Concept (Monetary) As Of Credit ifrs-full:NoncurrentPayablesToRelatedParties
109 Provisions and other non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentProvisions
110 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
111 TOTAL NON-CURRENT LIABILITIES Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
112 Current liabilities [abstract] Abstract ifrs-full:CurrentLiabilitiesAbstract
113 Debt and financing Concept (Monetary) As Of Credit ifrs-full:CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings
114 Put option liability Concept (Monetary) As Of Credit tigo:PutOptionLiability
115 Payables and accruals for capital expenditures Concept (Monetary) As Of Credit tigo:CurrentTradePayablesAndAccrualsForCapitalExpenditures
116 Other current liabilities Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
117 Amounts due to non-controlling interests, associates and joint ventures Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayablesToRelatedParties
118 Accrued interest and other expenses Concept (Monetary) As Of Credit ifrs-full:CurrentInterestPayable
119 Current income tax liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentTaxLiabilitiesCurrent
120 Contract liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentContractLiabilities
121 Derivative financial instruments Concept (Monetary) As Of Credit ifrs-full:CurrentDerivativeFinancialLiabilities
122 Provisions and other current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentProvisions
123 TOTAL CURRENT LIABILITIES Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilitiesOtherThanLiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale
124 Liabilities directly associated with assets held for sale Concept (Monetary) As Of Credit ifrs-full:LiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale
125 TOTAL LIABILITIES Concept (Monetary) As Of Credit ifrs-full:Liabilities
126 TOTAL EQUITY AND LIABILITIES Concept (Monetary) As Of Credit ifrs-full:EquityAndLiabilities
127 1004000 - Statement - Consolidated statement of cash flows Network

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128 Implied Table Table

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129 Statement of cash flows [abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
130 Cash flows from operating activities (including discontinued operations) Abstract ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
131 Profit before taxes from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
132 Profit (loss) before taxes from discontinued operations Concept (Monetary) For Period Credit tigo:ProfitLossBeforeTaxFromDiscontinuedOperations
133 Profit (loss) before taxes Concept (Monetary) For Period Credit tigo:ProfitLossBeforeTaxIncludingDiscontinuedOperations
134 Adjustments to reconcile to net cash: Abstract ifrs-full:AdjustmentsForReconcileProfitLossAbstract
135 Interest and other financial expenses, net Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForFinanceCosts
136 Interest and other financial income Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForFinanceIncome
137 Adjustments for non-cash items: Abstract tigo:AdjustmentsForNonCashItemsAbstract
138 Depreciation and amortization Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDepreciationAndAmortisationExpense
139 Share of profit in Guatemala and Honduras joint ventures Concept (Monetary) For Period Credit tigo:ShareOfProfitLossOfJointVenturesAccountedForUsingEquityMethodOperating
140 Gain (loss) on disposal and impairment of assets, net Concept (Monetary) For Period Debit tigo:AdjustmentsForLossesGainsOnDisposalsAndImpairmentsOfNoncurrentAssets
141 Share-based compensation Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForSharebasedPayments
142 Transaction costs assumed by Cable Onda Concept (Monetary) For Period Debit tigo:AdjustmentsForAcquisitionCosts
143 (Profit) loss from other joint ventures and associates, net Concept (Monetary) For Period Credit tigo:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethodNonoperating
144 Other non-cash non-operating (income) expenses, net Concept (Monetary) For Period Debit tigo:AdjustmentsForOtherNonOperatingIncomeExpense
145 Changes in working capital: Abstract tigo:ChangesInWorkingCapitalAbstract
146 Decrease (increase) in trade receivables, prepayments and other current assets, net Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable
147 (Increase) decrease in inventories Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInInventories
148 Increase (decrease) in trade and other payables, net Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInTradeAccountPayable
149 Changes in contract assets, liabilities and costs, net Concept (Monetary) For Period Credit tigo:AdjustmentsForIncreaseDecreaseInContractAssetsLiabilitiesAndCostsNet
150 Total changes in working capital Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseInWorkingCapital
151 Interest (paid) Concept (Monetary) For Period Credit ifrs-full:InterestPaidClassifiedAsOperatingActivities
152 Interest received Concept (Monetary) For Period Debit ifrs-full:InterestReceivedClassifiedAsOperatingActivities
153 Taxes (paid) Concept (Monetary) For Period Credit ifrs-full:IncomeTaxesPaidRefundClassifiedAsOperatingActivities
154 Net cash from operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
155 Cash flows from investing activities (including discontinued operations): Abstract ifrs-full:CashFlowsFromUsedInInvestingActivitiesAbstract
156 Acquisition of subsidiaries, joint ventures and associates, net of cash acquired Concept (Monetary) For Period Credit ifrs-full:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
157 Proceeds from disposal of subsidiaries and associates, net of cash disposed Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
158 Purchase of intangible assets and licenses Concept (Monetary) For Period Credit ifrs-full:PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities
159 Proceeds from sale of intangible assets Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfIntangibleAssetsClassifiedAsInvestingActivities
160 Purchase of property, plant and equipment Concept (Monetary) For Period Credit ifrs-full:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
161 Purchase of property, plant and equipment Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
162 Dividend received from joint ventures Concept (Monetary) For Period Debit ifrs-full:DividendsReceivedFromJointVenturesClassifiedAsInvestingActivities
163 Settlement of derivative financial instruments Concept (Monetary) For Period Credit ifrs-full:CashPaymentsForFutureContractsForwardContractsOptionContractsAndSwapContractsClassifiedAsInvestingActivities
164 Cash (used in) provided by other investing activities, net Concept (Monetary) For Period Debit ifrs-full:OtherInflowsOutflowsOfCashClassifiedAsInvestingActivities
165 Net cash used in investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
166 Cash flows from financing activities (including discontinued operations): Abstract ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract
167 Proceeds from debt and other financing Concept (Monetary) For Period Debit ifrs-full:ProceedsFromBorrowingsClassifiedAsFinancingActivities
168 Repayment of debt and other financing Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfBorrowingsClassifiedAsFinancingActivities
169 Advances for, and dividends paid to non-controlling interests Concept (Monetary) For Period Credit tigo:AdvancesAndDividendsPaidToNoncontrollingInterest
170 Dividends paid to non-controlling interests Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities
171 Dividends paid to owners of the Company Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToEquityHoldersOfParentClassifiedAsFinancingActivities
172 Net cash provided by (used in) financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
173 Exchange impact on cash and cash equivalents, net Concept (Monetary) For Period Debit ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
174 Net (decrease) increase in cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
175 Cash and cash equivalents, beginning balance Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
176 Effect of cash in disposal group held for sale Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalentsClassifiedAsPartOfDisposalGroupHeldForSale
177 Cash and cash equivalents, ending balance Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
178 1005000 - Statement - Consolidated statement of changes in equity Network

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179 Statement of changes in equity [table] Table

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180 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
181 Equity [member] Member ifrs-full:EquityMember
182 Total Member ifrs-full:EquityAttributableToOwnersOfParentMember
183 Share capital Member ifrs-full:IssuedCapitalMember
184 Share premium Member ifrs-full:SharePremiumMember
185 Treasury shares Member ifrs-full:TreasurySharesMember
186 Retained profits Member ifrs-full:RetainedEarningsMember
187 Other reserves Member tigo:OtherReserves1Member
188 Non- controlling interests Member ifrs-full:NoncontrollingInterestsMember
189 Statement of changes in equity [line items] LineItems ifrs-full:StatementOfChangesInEquityLineItems
190 Equity, beginning of period Concept (Monetary) As Of Credit ifrs-full:Equity
191 Number of shares, beginning of period (in shares) Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
192 Adjustment on adoption of IFRS 15 and IFRS 9 (net of tax) Concept (Monetary) As Of Credit tigo:CumulativeAdjustmentArisingFromChangeInMeasurementAttributeInitialApplicationOfIFRSStandard
193 Comprehensive income Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
194 Dividends Concept (Monetary) For Period Debit ifrs-full:DividendsRecognisedAsDistributionsToOwnersOfParent
195 Dividends to non-controlling interests Concept (Monetary) For Period Debit ifrs-full:DividendsRecognisedAsDistributionsToNoncontrollingInterests
196 Purchase of treasury shares (in shares) Concept (Shares) For Period tigo:NumberOfTreasurySharesPurchased
197 Purchase of treasury shares Concept (Monetary) For Period Debit ifrs-full:PurchaseOfTreasuryShares
198 Share-based compensation Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions
199 Issuance of shares under share-based payment schemes (in shares) Concept (Shares) For Period tigo:NumberOfSharesIssuedThroughShareBasedPaymentEquity
200 Issuance of shares under share-based payment schemes Concept (Monetary) For Period Credit ifrs-full:IssueOfEquity
201 Effect of change in consolidation scope Concept (Monetary) For Period Credit tigo:IncreaseDecreaseThroughChangeInScopeEquity
202 Put option reserve Concept (Monetary) For Period Credit tigo:IncreaseDecreaseThroughPutOptionReserveEquity
203 Equity, end of period Concept (Monetary) As Of Credit ifrs-full:Equity
204 Number of shares, end of period (in shares) Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
205 Statutory reserves unavailable for distribution Concept (Monetary) As Of Debit tigo:StatutoryReservesUnavailableForDistribution
206 2101100 - Disclosure - Introduction Network

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207 Implied Table Table

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208 Disclosure of changes in accounting policies, accounting estimates and errors [Abstract] Abstract tigo:DisclosureofchangesinaccountingpoliciesaccountingestimatesanderrorsAbstract
209 Introduction Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfChangesInAccountingPoliciesAccountingEstimatesAndErrorsExplanatory
210 2104100 - Disclosure - The Millicom Group Network

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211 Implied Table Table

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212 Interests In Other Entities [Abstract] Abstract tigo:InterestsInOtherEntitiesAbstract
213 The Millicom Group Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestsInOtherEntitiesExplanatory
214 2107100 - Disclosure - Performance Network

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215 Implied Table Table

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216 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
217 Performance Concept (Text Block (HTML)) For Period tigo:DisclosureOfRevenueAndExpenseTextBlock
218 2110100 - Disclosure - Capital structure and financing Network

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219 Implied Table Table

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220 Share Capital, Reserves And Other Equity Interest And Financial Instruments [Abstract] Abstract tigo:ShareCapitalReservesAndOtherEquityInterestAndFinancialInstrumentsAbstract
221 Capital structure and financing Concept (Text Block (HTML)) For Period tigo:DisclosureOfShareCapitalReservesAndOtherEquityInterestAndFinancialInstrumentsExplanatoryTextBlock
222 2113100 - Disclosure - Financial risk management Network

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223 Implied Table Table

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224 Financial Instruments [Abstract] Abstract tigo:FinancialInstrumentsAbstract
225 Financial risk management Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialRiskManagementExplanatory
226 2116100 - Disclosure - Long-term assets Network

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227 Implied Table Table

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228 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
229 Long-term assets Concept (Text Block (HTML)) For Period tigo:DisclosureOfNonCurrentAssetsExplanatoryTextBlock
230 2119100 - Disclosure - Other assets and liabilities Network

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231 Implied Table Table

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232 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
233 Other assets and liabilities Concept (Text Block (HTML)) For Period tigo:DisclosureOfOtherAssetsAndLiabilitiesExplanatoryTextBlock
234 2122100 - Disclosure - Additional disclosure items Network

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235 Implied Table Table

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236 Additional information [abstract] Abstract ifrs-full:AdditionalInformationAbstract
237 Additional disclosure items Concept (Text Block (HTML)) For Period tigo:DisclosureOfAdditionalDisclosureItemsTextBlock
238 2125100 - Disclosure - IPO - Millicom's operations in Tanzania Network

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239 Implied Table Table

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241 IPO - Millicom's operations in Tanzania Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory
242 2126100 - Disclosure - Subsequent events Network

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243 Implied Table Table

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244 Events After Reporting Period [Abstract] Abstract tigo:EventsAfterReportingPeriodAbstract
245 Subsequent events Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEventsAfterReportingPeriodExplanatory
246 2201201 - Disclosure - Introduction (Policies) Network

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247 Implied Table Table

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248 Disclosure of changes in accounting policies, accounting estimates and errors [Abstract] Abstract tigo:DisclosureofchangesinaccountingpoliciesaccountingestimatesanderrorsAbstract
249 Description of accounting policy for foreign currency translation Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory
250 Description of accounting policy for subsidiaries Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSubsidiariesExplanatory
251 Description of accounting policy for investments in joint ventures Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForInvestmentsInJointVentures
252 Description of accounting policy for investment in associates Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForInvestmentInAssociates
253 Description of accounting policy for discontinued operations Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForDiscontinuedOperationsExplanatory
254 Description of accounting policy for recognition of revenue Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForRecognitionOfRevenue
255 Description of accounting policy for expenses Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForExpensesExplanatory
256 Description of accounting policy for segment reporting Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSegmentReportingExplanatory
257 Description of accounting policy for share-based payment transactions Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory
258 Description of accounting policy for employee benefits Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory
259 Description of accounting policy for deferred income tax Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForDeferredIncomeTaxExplanatory
260 Description of accounting policy for earnings per share Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEarningsPerShareExplanatory
261 Description of accounting policy for treasury shares Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForTreasurySharesExplanatory
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519 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
520 Total operating expenses Concept (Monetary) For Period Debit ifrs-full:OperatingExpense
521 Operating profit (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
522 Net (loss) for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
523 50% non-controlling interest in net (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
524 Total assets (excluding goodwill) Concept (Monetary) As Of Debit ifrs-full:Assets
525 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
526 Net assets Concept (Monetary) As Of Debit ifrs-full:NetAssetsLiabilities
527 Non-controlling interests Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
528 Dividends and advances paid to non-controlling interest Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToNoncontrollingInterests
529 Net cash from operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
530 Net cash from (used in) investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
531 Net cash from (used in) financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
532 Exchange impact on cash and cash equivalents, net Concept (Monetary) For Period Debit ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
533 Net (decrease) increase in cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
534 2404406 - Disclosure - The Millicom Group - A.2. Joint Ventures (Details) Network

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*

 http://millicom.com/role/MillicomGroupA2JointVenturesDetails
535 Disclosure of joint ventures [table] Table

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*

 ifrs-full:DisclosureOfJointVenturesTable
536 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
537 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
538 Joint ventures Member ifrs-full:JointVenturesMember
539 Guatemala joint ventures Member tigo:GuatemalaJointVenturesMember
540 Comunicaciones Celulares S.A Member tigo:ComunicacionesCelularesS.AMember
541 Navega.com S.A. Member tigo:Navega.comS.A.Member
542 Honduras joint ventures Member tigo:HondurasJointVenturesMember
543 Telefonica Celular S.A Member tigo:TelefonicaCelularS.AMember
544 Navega S.A. de CV Member tigo:NavegaS.A.deCVMember
545 Ghana Member tigo:AirtelTigoGhanaHoldingsB.V.Member
546 Disclosure of joint ventures [line items] LineItems ifrs-full:DisclosureOfJointVenturesLineItems
547 Assets (liabilities) Concept (Monetary) As Of Debit ifrs-full:NetAssetsLiabilities
548 Statutory reserves unavailable for distribution Concept (Monetary) As Of Debit tigo:StatutoryReservesUnavailableForDistribution
549 Proportion of ownership interest in joint venture Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInJointVenture
550 Dividends and advances paid to Millicom Concept (Monetary) For Period Debit ifrs-full:DividendsReceived
551 Increase (Decrease) Joint Ventures [Roll Forward] Abstract tigo:IncreaseDecreaseJointVenturesRollForward
552 Investments in joint ventures Concept (Monetary) As Of Debit ifrs-full:InvestmentsInJointVentures
553 Adjustment on adoption of IFRS 15 and IFRS 9 (net of tax) Concept (Monetary) For Period Debit tigo:IncreaseDecreaseInJointVentureArisingFromChangeInMeasurementAttributeInitialApplicationOfIFRS15andIFRS9
554 Capital increase Concept (Monetary) For Period Debit tigo:IncreaseDecreaseInThroughCapitalIncreaseJointVentures
555 Change in scope Concept (Monetary) For Period Debit tigo:IncreaseDecreaseInThroughChangeInScopeJointVentures
556 Results for the year Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfJointVenturesAccountedForUsingEquityMethod
557 Dividends declared during the year Concept (Monetary) For Period Credit tigo:DecreaseFromDividendsDeclaredJointVentures
558 Currency exchange differences Concept (Monetary) For Period Debit tigo:IncreaseDecreaseThroughNetExchangeDifferencesJointVentures
559 Investments in joint ventures Concept (Monetary) As Of Debit ifrs-full:InvestmentsInJointVentures
560 2404407 - Disclosure - The Millicom Group - A.2.2. Material Joint Ventures - Guatemala and Honduras (Details) Network

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 http://millicom.com/role/MillicomGroupA22MaterialJointVenturesGuatemalaAndHondurasDetails
561 Disclosure of joint ventures [table] Table

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*

 ifrs-full:DisclosureOfJointVenturesTable
562 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
563 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
564 Honduras joint ventures Member tigo:HondurasJointVenturesMember
565 Guatemala joint ventures Member tigo:GuatemalaJointVenturesMember
566 Disclosure of joint ventures [line items] LineItems ifrs-full:DisclosureOfJointVenturesLineItems
567 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
568 Depreciation and amortization Concept (Monetary) For Period Debit ifrs-full:DepreciationAndAmortisationExpense
569 Operating profit (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
570 Financial income (expenses), net Concept (Monetary) For Period Credit ifrs-full:FinanceIncomeCost
571 Profit before taxes from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
572 Charge for taxes, net Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
573 Net profit (loss) for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
574 Share of profit in joint ventures Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfJointVenturesAccountedForUsingEquityMethod
575 Dividends and advances paid to Millicom Concept (Monetary) For Period Debit ifrs-full:DividendsReceived
576 Total non-current assets (excluding goodwill) Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
577 Total non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
578 Total current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
579 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
580 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
581 Debt and financing – non-current Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
582 Debt and financing – current Concept (Monetary) As Of Credit ifrs-full:CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings
583 Net cash from operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
584 Net cash from (used in) investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
585 Net cash from (used in) financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
586 Exchange impact on cash and cash equivalents, net Concept (Monetary) For Period Debit ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
587 Net (decrease) increase in cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
588 Impairment loss recognised in profit or loss, trade receivables Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossRecognisedInProfitOrLossTradeReceivables
589 Impairments/reversal of impairment,net Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
590 2404408 - Disclosure - The Millicom Group - A.2.2. Material Joint Ventures - Ghana (Details) Network

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*

 http://millicom.com/role/MillicomGroupA22MaterialJointVenturesGhanaDetails
591 Disclosure of joint ventures [table] Table

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*

 ifrs-full:DisclosureOfJointVenturesTable
592 Measurement [axis] Axis ifrs-full:MeasurementAxis
593 Aggregated measurement [member] Member ifrs-full:AggregatedMeasurementMember
594 At fair value Member ifrs-full:AtFairValueMember
595 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
596 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
597 Ghana Member tigo:AirtelTigoGhanaHoldingsB.V.Member
598 Disclosure of joint ventures [line items] LineItems ifrs-full:DisclosureOfJointVenturesLineItems
599 Proportion of ownership interest in joint venture Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInJointVenture
600 Government purchase option, percentage Concept (Percent) For Period tigo:JointVentureGovernmentPurchaseOptionPercentage
601 Government purchase option, period Concept (xbrli:durationItemType) For Period tigo:JointVentureGovernmentPurchaseOptionPeriod
602 Government purchase option, potential ownership percentage Concept (Percent) For Period tigo:JointVentureGovernmentPurchaseOptionPotentialOwnershipPercentage
603 Non-current receivables due from joint ventures Concept (Monetary) As Of Debit ifrs-full:NoncurrentReceivablesDueFromJointVentures
604 Combined commitment in joint venture Concept (Monetary) As Of Credit tigo:CombinedCommitmentInJointVenture
605 Commitments in relation to joint ventures Concept (Monetary) As Of Credit ifrs-full:CommitmentsInRelationToJointVentures
606 Investments in associates Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociates
607 Gains (losses) recognised when control of subsidiary is lost Concept (Monetary) For Period Credit ifrs-full:GainsLossesRecognisedWhenControlInSubsidiaryIsLost
608 Gain (loss) attributable to recycling of foreign currency exchange Concept (Monetary) For Period Credit tigo:PortionOfGainsLossesRecognisedWhenControlOfSubsidiaryIsLostAttributableToRecyclingOfForeignCurrencyExchange
609 Additional depreciation recognized by joint venture deconsolidated Concept (Monetary) For Period Credit ifrs-full:PortionOfGainsLossesRecognisedWhenControlOfSubsidiaryIsLostAttributableToRecognisingInvestmentRetainedInFormerSubsidiary
610 Financial Results Of Joint Venture [Abstract] Abstract tigo:FinancialResultsOfJointVentureAbstract
611 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
612 Depreciation and amortization Concept (Monetary) For Period Debit ifrs-full:DepreciationAndAmortisationExpense
613 Operating profit (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
614 Financial income (expenses), net Concept (Monetary) For Period Credit ifrs-full:FinanceIncomeCost
615 Profit before taxes from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
616 Charge for taxes, net Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
617 Net profit (loss) for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
618 Share of profit in joint ventures Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfJointVenturesAccountedForUsingEquityMethod
619 Dividends and advances paid to Millicom Concept (Monetary) For Period Debit ifrs-full:DividendsReceived
620 Total non-current assets (excluding goodwill) Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
621 Total non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
622 Total current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
623 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
624 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
625 Debt and financing Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
626 Debt and financing Concept (Monetary) As Of Credit ifrs-full:CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings
627 Net cash from operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
628 Net cash from (used in) investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
629 Net cash from (used in) financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
630 Increase (decrease) in cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
631 2404409 - Disclosure - The Millicom Group - A.2.3 Impairment of Investments in Joint Ventures (Details) Network

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 http://millicom.com/role/MillicomGroupA23ImpairmentOfInvestmentsInJointVenturesDetails
632 Disclosure of joint ventures [table] Table

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*

 ifrs-full:DisclosureOfJointVenturesTable
633 Range [axis] Axis ifrs-full:RangeAxis
634 Ranges [member] Member ifrs-full:RangesMember
635 Bottom of range Member ifrs-full:BottomOfRangeMember
636 Top of range Member ifrs-full:TopOfRangeMember
637 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
638 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
639 Guatemala and Honduras Joint Ventures Member tigo:GuatemalaAndHondurasJointVenturesMember
640 Ghana Member tigo:AirtelTigoGhanaHoldingsB.V.Member
641 Disclosure of joint ventures [line items] LineItems ifrs-full:DisclosureOfJointVenturesLineItems
642 Growth rate used to extrapolate cash flow projections Concept (Percent) As Of ifrs-full:DescriptionOfGrowthRateUsedToExtrapolateCashFlowProjections
643 Discount rate applied to cash flow projections Concept (Percent) As Of ifrs-full:DescriptionOfDiscountRatesAppliedToCashFlowProjections
644 2404410 - Disclosure - The Millicom Group - A.3. Investments in associates (Details) Network

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*

 http://millicom.com/role/MillicomGroupA3InvestmentsInAssociatesDetails
645 Disclosure of associates [table] Table

*

*

 ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesTable
646 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
647 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
648 Ghana Member tigo:AirtelTigoGhanaHoldingsB.V.Member
649 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
650 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
651 Associates [member] Member ifrs-full:AssociatesMember
652 Helios Tower Africa Ltd (HTA) And African Internet Holding GmbH (AIH) [Member] Member tigo:HeliosTowerAfricaLtdHTAAndAfricanInternetHoldingGmbHAIHMember
653 Helios Towers Africa Ltd (HTA) Member tigo:HeliosTowersAfricaLtdHTAMember
654 Africa Internet Holding GmbH (AIH) Member tigo:AfricaInternetHoldingGmbHAIHMember
655 West Indian Ocean Cable Company Limited (WIOCC) Member tigo:WestIndianOceanCableCompanyLimitedWIOCCMember
656 MKC Brilliant Holding GmbH (LIH) Member tigo:MKCBrilliantHoldingGmbHLIHMember
657 Milvik AB Member tigo:MilvikABMember
658 Aggregated individually immaterial associates [member] Member ifrs-full:AggregatedIndividuallyImmaterialAssociatesMember
659 Disclosure of associates [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesLineItems
660 Proportion of ownership interest in associate Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInAssociate
661 Investments in associates Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociatesAccountedForUsingEquityMethod
662 Total current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
663 Total non-current assets (excluding goodwill) Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
664 TOTAL ASSETS Concept (Monetary) As Of Debit ifrs-full:Assets
665 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
666 Total non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
667 TOTAL LIABILITIES Concept (Monetary) As Of Credit ifrs-full:Liabilities
668 Net assets Concept (Monetary) As Of Debit ifrs-full:NetAssetsLiabilities
669 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
670 Total operating expenses Concept (Monetary) For Period Debit ifrs-full:OperatingExpense
671 Operating profit (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
672 Net profit (loss) for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
673 Share of profit (loss) from other joint ventures and associates, net Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod
674 Results for the year Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfJointVenturesAccountedForUsingEquityMethod
675 Share of profit (loss) of associates and joint ventures accounted for using equity method Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
676 2404411 - Disclosure - The Millicom Group - A.3.2. Acquisitions and disposals of interests in associates (Details) Network

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*

 http://millicom.com/role/MillicomGroupA32AcquisitionsAndDisposalsOfInterestsInAssociatesDetails
677 Disclosure of associates [table] Table

*

*

 ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesTable
678 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
679 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
680 Africa Internet Holding GmbH (AIH) Member tigo:AfricaInternetHoldingGmbHAIHMember
681 Helios Towers Africa Ltd (HTA) Member tigo:HeliosTowersAfricaLtdHTAMember
682 MKC Brilliant Holding GmbH (LIH) Member tigo:MKCBrilliantHoldingGmbHLIHMember
683 Milvik AB Member tigo:MilvikABMember
684 Non-adjusting events after reporting period [axis] Axis ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
685 Non-adjusting events after reporting period [member] Member ifrs-full:NonadjustingEventsMember
686 Dilution of interest in associate Member tigo:DilutionOfInterestInAssociateMember
687 Disclosure of associates [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesLineItems
688 Gain (loss) on dilution in investment by associate Concept (Monetary) For Period Credit tigo:GainLossOnDilutionInInvestmentInAssociate
689 Dilution in investment in associate percent Concept (Percent) For Period tigo:DilutionInInvestmentInAssociatePercent
690 Proportion of ownership interest in associate Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInAssociate
691 Impairment loss Concept (Monetary) For Period Debit ifrs-full:ImpairmentLoss
692 Contributions to associate by other investors Concept (Monetary) For Period Debit tigo:ContributionsToAssociateByOtherInvestors
693 Proceeds from sales of interests in associates Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfInterestsInAssociates
694 Gains (losses) on disposal Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnDisposalsOfInvestments
695 2407402 - Disclosure - Performance B.1. Revenue (Details) Network

*

*

 http://millicom.com/role/PerformanceB1RevenueDetails
696 Disclosure of disaggregation of revenue from contracts with customers [table] Table

*

*

 ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable
697 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
698 Products and services [member] Member ifrs-full:ProductsAndServicesMember
699 Service revenue Member tigo:Service1Member
700 Mobile Member tigo:MobileServicesMember
701 Cable and other fixed services Member tigo:CableAndOtherFixedServicesMember
702 Other Member tigo:OtherServicesMember
703 Telephone and equipment and other Member tigo:TelephoneAndEquipmentMember
704 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
705 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
706 Colombia Member country:CO
707 Paraguay Member country:PY
708 Bolivia Member country:BO
709 El Salvador Member country:SV
710 Tanzania (excluding Zantel) Member country:TZ
711 Chad Member country:TD
712 Costa Rica Member country:CR
713 Panama Member country:PA
714 Other operations Member tigo:OtherCountriesMember
715 Disclosure of disaggregation of revenue from contracts with customers [line items] LineItems ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems
716 Revenue Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
717 2407403 - Disclosure - Performance B.2. Expenses (Details) Network

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*

 http://millicom.com/role/PerformanceB2ExpensesDetails
718 Implied Table Table

*

*

 implied:Table
719 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
720 Cost of sales: Abstract tigo:CostOfSalesAbstract
721 Direct costs of services sold Concept (Monetary) For Period Debit tigo:CostOfSalesDirect
722 Cost of telephone, equipment and other accessories Concept (Monetary) For Period Debit tigo:CostOfSalesCostOfTelephoneEquipmentAndOther
723 Bad debt and obsolescence costs Concept (Monetary) For Period Debit tigo:CostOfSalesBadDebtAndObsolescenceCosts
724 Cost of sales Concept (Monetary) For Period Debit ifrs-full:CostOfSales
725 Operating expenses, net Abstract tigo:OperatingExpenseAbstract
726 Marketing expenses Concept (Monetary) For Period Debit ifrs-full:SalesAndMarketingExpense
727 Site and network maintenance costs Concept (Monetary) For Period Debit ifrs-full:RepairsAndMaintenanceExpense
728 Employee related costs (B.4.) Concept (Monetary) For Period Debit ifrs-full:EmployeeBenefitsExpense
729 External and other services Concept (Monetary) For Period Debit ifrs-full:ServicesExpense
730 Rentals and operating leases Concept (Monetary) For Period Debit ifrs-full:RentalExpense
731 Other operating expenses Concept (Monetary) For Period Debit ifrs-full:MiscellaneousOtherOperatingExpense
732 Operating expenses, net Concept (Monetary) For Period Debit ifrs-full:OperatingExpenseExcludingCostOfSales
733 Other operating income (expenses), net: Abstract tigo:OtherOperatingIncomeExpenseAbstract
734 Income from tower deal transactions Concept (Monetary) For Period Credit ifrs-full:GainsLossesArisingFromSaleAndLeasebackTransactions
735 Impairment of intangible assets and property, plant and equipment Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss
736 Gain (loss) on disposals of intangible assets and property, plant and equipment Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnDisposalsOfNoncurrentAssets
737 Other income (expenses) Concept (Monetary) For Period Credit tigo:OtherMiscellaneousOperatingIncomeExpense
738 Other operating income (expenses), net Concept (Monetary) For Period Credit ifrs-full:OtherOperatingIncomeExpense
739 2407404 - Disclosure - Performance B.3. Segmental Information - Revenue, operating profit (loss), EBITDA, and other (Details) Network

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*

 http://millicom.com/role/PerformanceB3SegmentalInformationRevenueOperatingProfitLossEbitdaAndOtherDetails
740 Disclosure of operating segments [table] Table

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*

 ifrs-full:DisclosureOfOperatingSegmentsTable
741 Segment consolidation items [axis] Axis ifrs-full:SegmentConsolidationItemsAxis
742 Entity's total for segment consolidation items [member] Member ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
743 Operating segments Member ifrs-full:OperatingSegmentsMember
744 Unallocated Member ifrs-full:UnallocatedAmountsMember
745 Guatemala and Honduras Member tigo:EliminationsJointVenturesMember
746 Eliminations and Transfers Member ifrs-full:EliminationOfIntersegmentAmountsMember
747 Segments [axis] Axis ifrs-full:SegmentsAxis
748 Segments [member] Member ifrs-full:SegmentsMember
749 Latin America Member tigo:LatinAmericaSegmentMember
750 Africa Member tigo:AfricaSegmentMember
751 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
752 Products and services [member] Member ifrs-full:ProductsAndServicesMember
753 Mobile Member tigo:MobileServicesMember
754 Cable and other fixed services Member tigo:CableAndOtherFixedServicesMember
755 Other Member tigo:OtherServicesMember
756 Service revenue Member tigo:Service1Member
757 Telephone and equipment and other Member tigo:TelephoneAndEquipmentMember
758 Disclosure of operating segments [line items] LineItems ifrs-full:DisclosureOfOperatingSegmentsLineItems
759 Number of regions Concept (Integer) For Period tigo:NumberOfRegions
760 Revenue Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
761 Operating profit Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
762 Depreciation and amortization Concept (Monetary) For Period Debit ifrs-full:DepreciationAndAmortisationExpense
763 Share of profit in Guatemala and Honduras joint ventures Concept (Monetary) For Period Credit tigo:ShareOfProfitLossOfJointVenturesAccountedForUsingEquityMethodOperating
764 Other operating income (expenses), net Concept (Monetary) For Period Credit ifrs-full:OtherOperatingIncomeExpense
765 EBITDA Concept (Monetary) For Period Credit tigo:EarningsBeforeInterestTaxesDepreciationAndAmortisationFromContinuingOperations
766 EBITDA from discontinued operations Concept (Monetary) For Period Credit tigo:EarningsBeforeInterestTaxesDepreciationAndAmortisationFromDiscontinuedOperations
767 EBITDA incl. discontinued operations Concept (Monetary) For Period Credit tigo:EarningsBeforeInterestTaxesDepreciationAndAmortisation
768 Capex Concept (Monetary) For Period Debit ifrs-full:AdditionsToNoncurrentAssets
769 Changes in working capital and others Concept (Monetary) For Period Credit tigo:ChangesInWorkingCapitalIncludingSharebasedCompensationExpenseAndNonCashBonuses
770 Taxes (paid) Concept (Monetary) For Period Credit ifrs-full:IncomeTaxesPaidRefundClassifiedAsOperatingActivities
771 Operating Free Cash Flow Concept (Monetary) For Period Debit tigo:OperatingFreeCashFlow
772 Total assets (excluding goodwill) Concept (Monetary) As Of Debit ifrs-full:Assets
773 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
774 Cash received from sales and leaseback transaction Concept (Monetary) For Period Debit tigo:CashReceivedFromSalesAndLeasebackTransaction
775 Purchase of spectrum and licenses Concept (Monetary) For Period Credit tigo:PurchaseOfLicenses
776 2407405 - Disclosure - Performance B.3. Segmental Information - Revenue from contracts with customers (Details) Network

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*

 http://millicom.com/role/PerformanceB3SegmentalInformationRevenueFromContractsWithCustomersDetails
777 Disclosure of disaggregation of revenue from contracts with customers [table] Table

*

*

 ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable
778 Timing of transfer of goods or services [axis] Axis ifrs-full:TimingOfTransferOfGoodsOrServicesAxis
779 Timing of transfer of goods or services [member] Member ifrs-full:TimingOfTransferOfGoodsOrServicesMember
780 Over time Member ifrs-full:GoodsOrServicesTransferredOverTimeMember
781 Point in time Member ifrs-full:GoodsOrServicesTransferredAtPointInTimeMember
782 Segments [axis] Axis ifrs-full:SegmentsAxis
783 Segments [member] Member ifrs-full:SegmentsMember
784 Latin America Member tigo:LatinAmericaSegmentMember
785 Africa Member tigo:AfricaSegmentMember
786 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
787 Products and services [member] Member ifrs-full:ProductsAndServicesMember
788 Service revenue Member tigo:Service1Member
789 Mobile Member tigo:MobileServicesMember
790 Cable and other fixed services Member tigo:CableAndOtherFixedServicesMember
791 Other Member tigo:OtherServicesMember
792 Telephone and equipment and other Member tigo:TelephoneAndEquipmentMember
793 Disclosure of disaggregation of revenue from contracts with customers [line items] LineItems ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems
794 Revenue Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
795 2407406 - Disclosure - Performance B.4. People (Details) Network

*

*

 http://millicom.com/role/PerformanceB4PeopleDetails
796 Implied Table Table

*

*

 implied:Table
797 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
798 Number of permanent employees: Abstract tigo:NumberOfEmployeesAbstract
799 Continuing operations Concept (Decimal) As Of tigo:NumberOfEmployeesContinuingOperations
800 Joint ventures (Guatemala, Honduras and Ghana – for 2018 and 2017) Concept (Decimal) As Of tigo:NumberOfEmployeesJointVentures
801 Discontinued operations Concept (Decimal) As Of tigo:NumberOfEmployeesDiscontinuedOperations
802 Total Concept (Decimal) As Of ifrs-full:NumberOfEmployees
803 Classes of employee benefits expense: Abstract ifrs-full:ClassesOfEmployeeBenefitsExpenseAbstract
804 Wages and salaries Concept (Monetary) For Period Debit ifrs-full:WagesAndSalaries
805 Social security Concept (Monetary) For Period Debit ifrs-full:SocialSecurityContributions
806 Share based compensation Concept (Monetary) For Period Debit ifrs-full:ExpenseFromSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets
807 Pension and other long-term benefit costs Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedBenefitPlans
808 Other employee related costs Concept (Monetary) For Period Debit ifrs-full:OtherEmployeeExpense
809 Total Concept (Monetary) For Period Debit ifrs-full:EmployeeBenefitsExpense
810 2407407 - Disclosure - Performance B.4.1. Share-based compensation - Narrative (Details) Network

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*

 http://millicom.com/role/PerformanceB41ShareBasedCompensationNarrativeDetails
811 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
812 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
813 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
814 Deferred share plans Member tigo:DeferredSharePlansMember
815 2015 CEO Plan Member tigo:IncentivePlan2015CEOPlanMember
816 2015 Performance Plan Member tigo:IncentivePlan2015PerformancePlanMember
817 2015 Executive Plan Member tigo:IncentivePlan2015ExecutivePlanMember
818 2015 Executive Plan - CEO Member tigo:IncentivePlan2015ExecutivePlanCEOMember
819 2015 Executive Plan - CFO Member tigo:IncentivePlan2015ExecutivePlanCFOMember
820 2017 Performance Plan Member tigo:IncentivePlan2017PerformancePlanMember
821 2016 Performance Plan Member tigo:IncentivePlan2016PerformancePlanMember
822 2018 Performance Plan Member tigo:IncentivePlan2018PerformancePlanMember
823 Vesting [Axis] Axis tigo:VestingAxis
824 Vesting [Domain] Member tigo:VestingDomain
825 Tranche One Member tigo:SharebasedCompensationAwardTrancheOneMember
826 Tranche Two Member tigo:SharebasedCompensationAwardTrancheTwoMember
827 Tranche Three Member tigo:SharebasedCompensationAwardTrancheThreeMember
828 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
829 Number of plans Concept (Integer) As Of tigo:NumberOfSharebasedCompensationPlans
830 Vesting percentage Concept (Percent) As Of tigo:VestingRequirementsForSharebasedPaymentArrangementVestingPercentage
831 Vesting period Concept (xbrli:durationItemType) For Period tigo:VestingRequirementsForSharebasedPaymentArrangementVestingPeriod
832 Number of shares granted (in shares) Concept (Decimal) For Period ifrs-full:NumberOfInstrumentsOtherEquityInstrumentsGranted
833 Fulfillment expectation Concept (Percent) For Period tigo:FulfillmentExpectationOtherEquityInstrumentsGranted
834 Shares in entity held by entity executive Concept (Shares) As Of tigo:SharesInEntityHeldByEntityExecutive
835 2407408 - Disclosure - Performance B.4.1. Share-based compensation - Cost of share based compensation (Details) Network

*

*

 http://millicom.com/role/PerformanceB41ShareBasedCompensationCostOfShareBasedCompensationDetails
836 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
837 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
838 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
839 2014 incentive plans Member tigo:IncentivePlans2014Member
840 2015 incentive plans Member tigo:IncentivePlans2015Member
841 2016 incentive plans Member tigo:IncentivePlans2016Member
842 2017 incentive plans Member tigo:IncentivePlans2017Member
843 2018 incentive plans Member tigo:IncentivePlans2018Member
844 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
845 Cost of share based compensation Concept (Monetary) For Period Debit ifrs-full:ExpenseFromSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets
846 2407409 - Disclosure - Performance B.4.1. Share-based compensation - Assumptions (Details) Network

*

*

 http://millicom.com/role/PerformanceB41ShareBasedCompensationAssumptionsDetails
847 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
848 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
849 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
850 Performance share plan 2018 (Relative TSR) Member tigo:Performanceshareplan2018RelativeTSRMember
851 Performance share plan 2017 (Relative TSR) Member tigo:PerformanceSharePlan2017RelativeTSRMember
852 Performance share plan 2017 (Absolute TSR) Member tigo:PerformanceSharePlan2017AbsoluteTSRMember
853 Performance share plan 2016 (Relative TSR) Member tigo:PerformanceSharePlan2016RelativeTSRMember
854 Performance share plan 2016 (Absolute TSR) Member tigo:PerformanceSharePlan2016AbsoluteTSRMember
855 Performance share plan 2015 (Absolute TSR) Member tigo:PerformanceSharePlan2015AbsoluteTSRMember
856 Executive share plan 2015 – Component A Member tigo:ExecutiveSharePlan2015ComponentAMember
857 Executive share plan 2015 – Component B Member tigo:ExecutiveSharePlan2015ComponentBMember
858 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
859 Risk-free rate % Concept (Percent) For Period tigo:RiskFreeInterestRateOtherEquityInstrumentsGranted
860 Dividend yield % Concept (Percent) For Period tigo:ExpectedDividendAsPercentageOtherEquityInstrumentsGranted
861 Share price volatility % Concept (Percent) For Period tigo:ExpectedVolatilityOtherEquityInstrumentsGranted
862 Award term (years) Concept (Decimal) For Period tigo:OtherEquityInstrumentsLifeOtherEquityInstrumentsGranted
863 Share fair value (in US$) Concept (Monetary) As Of Credit ifrs-full:WeightedAverageFairValueAtMeasurementDateOtherEquityInstrumentsGranted
864 2407410 - Disclosure - Performance B.4.1. Share-based compensation - Plan awards and shares expected to vest (Details) Network

*

*

 http://millicom.com/role/PerformanceB41ShareBasedCompensationPlanAwardsAndSharesExpectedToVestDetails
865 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
866 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
867 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
868 2018 Performance Plan Member tigo:IncentivePlan2018PerformancePlanMember
869 2018 Deferred Plan Member tigo:IncentivePlan2018DeferredPlanMember
870 2017 Performance Plan Member tigo:IncentivePlan2017PerformancePlanMember
871 2017 Deferred Plan Member tigo:IncentivePlan2017DeferredPlanMember
872 2016 Performance Plan Member tigo:IncentivePlan2016PerformancePlanMember
873 2016 Deferred Plan Member tigo:IncentivePlan2016DeferredPlanMember
874 2015 Deferred Plan Member tigo:IncentivePlan2015DeferredPlanMember
875 2015 CEO Plan Member tigo:IncentivePlan2015CEOPlanMember
876 2015 Executive Plan Member tigo:IncentivePlan2015ExecutivePlanMember
877 2015 Performance Plan Member tigo:IncentivePlan2015PerformancePlanMember
878 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
879 Initial shares granted (in shares) Concept (Shares) For Period tigo:NumberOfOtherEquityInstrumentsInitiallyGrantedInShareBasedPaymentArrangement
880 Additional shares granted (in shares) Concept (Shares) For Period tigo:NumberOfOtherEquityInstrumentsAdditionalSharesGrantedInShareBasedPaymentArrangement
881 Revision for forfeitures (in shares) Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement
882 Revision for cancellations (in shares) Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement
883 Total before issuances (in shares) Concept (Shares) For Period tigo:IncreaseDecreaseNumberOfOtherEquityInstrumentsBeforeExercisedOrVestedInShareBasedPaymentArangement
884 Shares issued (in shares) Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement
885 Performance conditions Concept (Shares) For Period tigo:NumberOfOtherEquityInstrumentsForfeitedDueToPerformanceConditionsInSharebasedPaymentArrangements
886 Shares still expected to vest (in shares) Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
887 Estimated cost over the vesting period (US$ millions) Concept (Monetary) As Of Debit tigo:EstimatedCostOverTheVestingPeriodForShareBasedPaymentArrangment
888 2407411 - Disclosure - Performance B.4.2. Pension and other long-term employee benefit plans (Details) Network

*

*

 http://millicom.com/role/PerformanceB42PensionAndOtherLongTermEmployeeBenefitPlansDetails
889 Disclosure of defined benefit plans [table] Table

*

*

 ifrs-full:DisclosureOfDefinedBenefitPlansTable
890 Range [axis] Axis ifrs-full:RangeAxis
891 Ranges [member] Member ifrs-full:RangesMember
892 Bottom of range Member ifrs-full:BottomOfRangeMember
893 Top of range Member ifrs-full:TopOfRangeMember
894 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
895 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
896 Long-Service Plans Member tigo:LongServicePlansMember
897 Termination Plans Member tigo:TerminationPlansMember
898 Disclosure of defined benefit plans [line items] LineItems ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
899 Requisite service period Concept (xbrli:durationItemType) For Period tigo:EmployeeBenefitPlanRequisiteServicePeriod
900 Requisite service period, additional bonus Concept (xbrli:durationItemType) For Period tigo:EmployeeBenefitPlanRequisiteServicePeriodAdditionalBonus
901 Net defined benefit liability Concept (Monetary) As Of Credit ifrs-full:RecognisedLiabilitiesDefinedBenefitPlan
902 Estimate of contributions expected to be paid to plan in future years Concept (Monetary) As Of Credit tigo:EstimateOfContributionsExpectedToBePaidToPlanInFutureYears
903 Weighted average duration of defined benefit obligation Concept (Decimal) For Period ifrs-full:WeightedAverageDurationOfDefinedBenefitObligation
904 2407412 - Disclosure - Performance B.4.3. Directors and executive (Details) Network

*

*

 http://millicom.com/role/PerformanceB43DirectorsAndExecutiveDetails
905 Employee Benefits Expense [Table] Table

*

*

 tigo:EmployeeBenefitsExpenseTable
906 Title of Individual [Axis] Axis tigo:TitleofIndividualAxis
907 Title of Individual [Domain] Member tigo:TitleofIndividualDomain
908 Chairperson Member tigo:ChairpersonMember
909 Other members of the Board Member tigo:OtherMembersOfTheBoardMember
910 CEO Member tigo:ChiefExecutiveOfficerMember
911 CFO Member tigo:ChiefFinancialOfficerMember
912 Executive team (9 members) Member tigo:NineExecutiveTeamMembersMember
913 Employee Benefits Expense [Line Items] LineItems tigo:EmployeeBenefitsExpenseLineItems
914 Remuneration charge for the Board (gross of withholding tax) Concept (Monetary) For Period Debit ifrs-full:DirectorsRemunerationExpense
915 Remuneration expense, percent cash Concept (Shares) For Period tigo:DirectorsRemunerationExpenseShares
916 Remuneration expense, percent shares Concept (Percent) For Period tigo:DirectorsRemunerationExpensePercentInShares
917 Renumeration charge, shares (in shares) Concept (Percent) For Period tigo:DirectorsRemunerationExpensePercentInCash
918 Shares beneficially owned by the Directors Concept (Shares) As Of tigo:SharesBeneficiallyOwnedByTheDirectors
919 Classes of employee benefits expense: Abstract ifrs-full:ClassesOfEmployeeBenefitsExpenseAbstract
920 Base salary Concept (Monetary) For Period Debit ifrs-full:WagesAndSalaries
921 Bonus Concept (Monetary) For Period Debit tigo:BonusExpense
922 Pension Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedBenefitPlans
923 Other benefits Concept (Monetary) For Period Debit ifrs-full:OtherEmployeeExpense
924 Termination benefits Concept (Monetary) For Period Debit ifrs-full:TerminationBenefitsExpense
925 Total before share based compensation Concept (Monetary) For Period Debit tigo:EmployeeBenefitsExpenseExcludingSharebasedCompensationExpense
926 Share based compensation Concept (Monetary) For Period Debit ifrs-full:ExpenseFromSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets
927 Employee benefits expense Concept (Monetary) For Period Debit ifrs-full:EmployeeBenefitsExpense
928 Number of shares granted (in shares) Concept (Decimal) For Period ifrs-full:NumberOfInstrumentsOtherEquityInstrumentsGranted
929 Shares awards vested (in shares) Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement
930 Shares not yet vested (in shares) Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
931 2407413 - Disclosure - Performance B.5. Other non-operating (expenses) income, net (Details) Network

*

*

 http://millicom.com/role/PerformanceB5OtherNonOperatingExpensesIncomeNetDetails
932 Implied Table Table

*

*

 implied:Table
933 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
934 Change in fair value of derivatives (see note D.1.2.) Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnChangeInFairValueOfDerivatives
935 Exchange gain (loss), net Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
936 Other non-operating income (expenses), net Concept (Monetary) For Period Credit tigo:OtherMiscellaneousNonOperatingIncomeExpense
937 Total Concept (Monetary) For Period Credit tigo:OtherNonOperatingIncomeExpense
938 2407414 - Disclosure - Performance B.6.1 Income tax expense (Details) Network

*

*

 http://millicom.com/role/PerformanceB61IncomeTaxExpenseDetails
939 Taxation [Table] Table

*

*

 tigo:TaxationTable
940 Range [axis] Axis ifrs-full:RangeAxis
941 Ranges [member] Member ifrs-full:RangesMember
942 Bottom of range Member ifrs-full:BottomOfRangeMember
943 Top of range Member ifrs-full:TopOfRangeMember
944 Continuing and discontinued operations [axis] Axis ifrs-full:ContinuingAndDiscontinuedOperationsAxis
945 Continuing operations [member] Member ifrs-full:ContinuingOperationsMember
946 Discontinued operations Member ifrs-full:DiscontinuedOperationsMember
947 Aggregate continuing and discontinued operations [member] Member ifrs-full:AggregateContinuingAndDiscontinuedOperationsMember
948 Taxation [Line Items] LineItems tigo:TaxationLineItems
949 Income tax charge: Abstract ifrs-full:MajorComponentsOfTaxExpenseIncomeAbstract
950 Income tax (charge) credit Abstract ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriodsAbstract
951 Withholding tax Concept (Monetary) For Period Debit tigo:CurrentTaxExpenseIncomeWithholdingTax
952 Other income tax relating to the current year Concept (Monetary) For Period Debit tigo:CurrentTaxExpenseIncomeOther
953 Current tax expense (income) Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncome
954 Adjustments in respect of prior years Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForCurrentTaxOfPriorPeriod
955 Current tax expense (income) and adjustments Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods
956 Deferred tax (charge) credit Abstract ifrs-full:DeferredTaxExpenseIncomeAbstract
957 Origination and reversal of temporary differences Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseIncomeRelatingToOriginationAndReversalOfTemporaryDifferences
958 Effect of change in tax rates Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseIncomeRelatingToTaxRateChangesOrImpositionOfNewTaxes
959 Tax income (expense) before valuation allowances Concept (Monetary) For Period Debit tigo:DeferredTaxExpenseIncomeBeforeValuationAllowance
960 Effect of valuation allowances Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseArisingFromWritedownOrReversalOfWritedownOfDeferredTaxAsset
961 Deferred tax expense (income) Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseIncome
962 Adjustments in respect of prior years Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDeferredTaxOfPriorPeriods
963 Deferred tax expense (income) and adjustments Concept (Monetary) For Period Debit tigo:DeferredTaxExpenseIncomeAndAdjustmentsForDeferredTaxOfPriorPeriods
964 Income Tax Calculation: Abstract tigo:IncomeTaxCalculationAbstract
965 Profit before tax Concept (Monetary) For Period Credit ifrs-full:AccountingProfit
966 Tax at the weighted average statutory rate Concept (Monetary) For Period Debit ifrs-full:TaxExpenseIncomeAtApplicableTaxRate
967 Effect of: Abstract ifrs-full:ReconciliationOfAccountingProfitMultipliedByApplicableTaxRatesAbstract
968 Items taxed at a different rate Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfForeignTaxRates
969 Change in tax rates on deferred tax balances Concept (Monetary) For Period Debit ifrs-full:TaxEffectFromChangeInTaxRate
970 Expenditure not deductible and income not taxable Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss
971 Unrelieved withholding tax Concept (Monetary) For Period Credit tigo:TaxEffectOfUnrelievedWithholdingTax
972 Accounting for associates and joint ventures Concept (Monetary) For Period Debit tigo:TaxEffectOfAssociatesAndJointVentures
973 Movement in deferred tax on unremitted earnings Concept (Monetary) For Period Credit tigo:TaxEffectOfMovementInDeferredTaxOnUnremittedEarnings
974 Unrecognized deferred tax assets Concept (Monetary) For Period Credit tigo:TaxEffectOfUnrecognizedDeferredTaxAssets
975 Recognition of previously unrecognized deferred tax assets Concept (Monetary) For Period Debit tigo:TaxEffectOfRecognitionOfPreviouslyUnrecognizedDeferredTaxAssets
976 Adjustments in respect of prior years Concept (Monetary) For Period Debit tigo:TaxEffectOfPriorYearIncomeTaxes
977 Total tax (charge) credit Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
978 Weighted average statutory tax rate Concept (Percent) For Period ifrs-full:ApplicableTaxRate
979 Effective tax rate Concept (Percent) For Period ifrs-full:AverageEffectiveTaxRate
980 2407415 - Disclosure - Performance B.6.3 Deferred tax (Details) Network

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*

 http://millicom.com/role/PerformanceB63DeferredTaxDetails
981 Disclosure of temporary difference, unused tax losses and unused tax credits [table] Table

*

*

 ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
982 Maturity [axis] Axis ifrs-full:MaturityAxis
983 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
984 Less than 1 year Member ifrs-full:NotLaterThanOneYearMember
985 1 to 5 years Member ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
986 After five years Member ifrs-full:LaterThanFiveYearsMember
987 No expiry Member tigo:NoExpirationMember
988 Temporary difference, unused tax losses and unused tax credits [axis] Axis ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
989 Temporary difference, unused tax losses and unused tax credits [member] Member ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
990 Fixed assets Member tigo:PropertyPlantAndEquipmentRelatedTemporaryDifferencesMember
991 Unused tax losses Member ifrs-full:UnusedTaxLossesMember
992 Unremitted earnings Member tigo:UnremittedEarningsMember
993 Other Member ifrs-full:OtherTemporaryDifferencesMember
994 After Offset Amount, Offset Amount And Before Offset Amount [Axis] Axis tigo:AfterOffsetAmountOffsetAmountAndBeforeOffsetAmountAxis
995 After Offset Amount, Offset Amount And Before Offset Amount [Domain] Member tigo:AfterOffsetAmountOffsetAmountAndBeforeOffsetAmountDomain
996 Before Offset Member tigo:BeforeOffsetAmountMember
997 Offset Member tigo:OffsetAmountMember
998 Disclosure of temporary difference, unused tax losses and unused tax credits [line items] LineItems ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
999 Reconciliation of changes in deferred tax liability (asset) [abstract] Abstract ifrs-full:ReconciliationOfChangesInDeferredTaxLiabilityAssetAbstract
1000 Beginning of period Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
1001 (Charge)/credit to statement of income Concept (Monetary) For Period ifrs-full:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
1002 Change in scope Concept (Monetary) For Period Credit tigo:IncreaseDecreaseThroughChangeInScopeDeferredTaxLiabilityAsset
1003 Accounting policy changes Concept (Monetary) For Period Credit tigo:IncreaseDecreaseThroughAccountingPolicyChangesDeferredTaxLiabilityAsset
1004 Exchange differences Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesDeferredTaxLiabilityAsset
1005 End of period Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
1006 Deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
1007 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
1008 Deductible temporary differences Concept (Monetary) As Of ifrs-full:DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised
1009 Temporary differences associated with investments in subsidiaries, branches and associates and interests in joint arrangements for which deferred tax liabilities have not been recognised Concept (Monetary) As Of ifrs-full:TemporaryDifferencesAssociatedWithInvestmentsInSubsidiariesBranchesAndAssociatesAndInterestsInJointVentures
1010 Unrecognized tax losses Concept (Monetary) As Of ifrs-full:UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised
1011 Deferred tax assets, intragroup dividends Concept (Monetary) As Of Debit tigo:DeferredTaxAssetsIntragroupDividends
1012 2407416 - Disclosure - Performance B.7. Earnings Per Share (Details) Network

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*

 http://millicom.com/role/PerformanceB7EarningsPerShareDetails
1013 Implied Table Table

*

*

 implied:Table
1014 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
1015 Earnings (loss) per common share for profit (loss) attributable to the owners of the Company: Abstract ifrs-full:EarningsPerShareAbstract
1016 Net profit/(loss) attributable to equity holders from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperationsAttributableToOrdinaryEquityHoldersOfParentEntity
1017 Net profit/(loss) attributable to equity holders from discontinued operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromDiscontinuedOperationsAttributableToOrdinaryEquityHoldersOfParentEntity
1018 Net profit/(loss) attributable to all equity holders to determine the basic earnings (loss) per share Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOwnersOfParent
1019 Weighted average ordinary shares and adjusted weighted average ordinary shares [abstract] Abstract ifrs-full:WeightedAverageSharesAndAdjustedWeightedAverageSharesAbstract
1020 Weighted average number of ordinary shares (excluding treasury shares) for basic earnings per share) (in shares) Concept (Shares) For Period ifrs-full:WeightedAverageShares
1021 Potential incremental shares as a result of share options (in shares) Concept (Shares) For Period ifrs-full:DilutiveEffectOfShareOptionsOnNumberOfOrdinaryShares
1022 Weighted average number of ordinary shares (excluding treasury shares) adjusted for the effect of dilution (in shares) Concept (Shares) For Period ifrs-full:AdjustedWeightedAverageShares
1023 2410402 - Disclosure - Capital structure and financing - C.1. Share capital and other equity reserves (Details) Network

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*

 http://millicom.com/role/CapitalStructureAndFinancingC1ShareCapitalAndOtherEquityReservesDetails
1024 Disclosure of reserves within equity [table] Table

*

*

 ifrs-full:DisclosureOfReservesWithinEquityTable
1025 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
1026 Equity [member] Member ifrs-full:EquityMember
1027 Other reserves Member tigo:OtherReserves1Member
1028 Reserves within equity [axis] Axis ifrs-full:ReservesWithinEquityAxis
1029 Other reserves [member] Member ifrs-full:OtherReservesMember
1030 Legal reserve Member tigo:LegalReserveMember
1031 Equity settled transaction reserve Member ifrs-full:ReserveOfSharebasedPaymentsMember
1032 Hedge reserve Member ifrs-full:ReserveOfGainsAndLossesOnHedgingInstrumentsThatHedgeInvestmentsInEquityInstrumentsMember
1033 Currency translation reserve Member ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember
1034 Pension obligation reserve Member ifrs-full:ReserveOfRemeasurementsOfDefinedBenefitPlansMember
1035 Disclosure of reserves within equity [line items] LineItems ifrs-full:DisclosureOfReservesWithinEquityLineItems
1036 Other equity reserves Concept (Monetary) As Of Credit ifrs-full:OtherReserves
1037 Share based compensation Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions
1038 Issuance of shares Concept (Monetary) For Period Credit ifrs-full:IssueOfEquity
1039 Remeasurements of post-employment benefit obligations Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
1040 Cash flow hedge reserve movement Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxCashFlowHedges
1041 Currency translation movement Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation
1042 Other equity reserves Concept (Monetary) As Of Credit ifrs-full:OtherReserves
1043 2410403 - Disclosure - Capital structure and financing - C.2. Dividend distributions (Details) Network

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*

 http://millicom.com/role/CapitalStructureAndFinancingC2DividendDistributionsDetails
1044 Implied Table Table

*

*

 implied:Table
1045 Share Capital, Reserves And Other Equity Interest And Financial Instruments [Abstract] Abstract tigo:ShareCapitalReservesAndOtherEquityInterestAndFinancialInstrumentsAbstract
1046 Dividends recognised as distributions Concept (Share) For Period ifrs-full:DividendsRecognisedAsDistributionsToOwnersPerShare
1047 Statutory reserves unavailable for distribution Concept (Monetary) As Of Debit tigo:StatutoryReservesUnavailableForDistribution
1048 2410404 - Disclosure - Capital structure and financing - C.3. Debt and financing (Details) Network

*

*

 http://millicom.com/role/CapitalStructureAndFinancingC3DebtAndFinancingDetails
1049 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
1050 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1051 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1052 Bilateral Facility With IIC [Member] Member tigo:BilateralFacilityWithIICMember
1053 Bonds Member tigo:BondBorrowingsMember
1054 Banks Member tigo:BankBorrowingsMember
1055 Finance lease liabilities Member tigo:FinanceLeasesMember
1056 Other Borrowings Member tigo:OtherBorrowingsMember
1057 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
1058 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1059 Millicom International Cellular S.A. (Luxembourg) Member country:LU
1060 Colombia Member country:CO
1061 Paraguay Member country:PY
1062 Bolivia Member country:BO
1063 Panama Member country:PA
1064 Tanzania (excluding Zantel) Member country:TZ
1065 Rwanda Member country:RW
1066 Chad Member country:TD
1067 Costa Rica Member country:CR
1068 El Salvador Member country:SV
1069 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1070 Borrowings face amount Concept (Monetary) As Of ifrs-full:NotionalAmount
1071 Total non-current financing Concept (Monetary) As Of Credit tigo:NonCurrentBorrowings
1072 Less: portion payable within one year Concept (Monetary) As Of Credit ifrs-full:CurrentPortionOfLongtermBorrowings
1073 Debt and financing – non-current Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
1074 Total non-current financing due after more than one year Concept (Monetary) As Of Credit ifrs-full:ShorttermBorrowings
1075 Debt and financing – current Concept (Monetary) As Of Credit ifrs-full:CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings
1076 Borrowings Concept (Monetary) As Of Credit ifrs-full:Borrowings
1077 Borrowings, interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
1078 2410405 - Disclosure - Capital structure and financing - C.3.1. Bond financing (Details) Network

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*

 http://millicom.com/role/CapitalStructureAndFinancingC31BondFinancingDetails
1079 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
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1135 2410406 - Disclosure - Capital structure and financing - C.3.2. Bank and Development Financial Institution financing (Details) Network

*

*

 http://millicom.com/role/CapitalStructureAndFinancingC32BankAndDevelopmentFinancialInstitutionFinancingDetails
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*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
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1184 2410407 - Disclosure - Capital structure and financing - C.3.3. Interest and other financial expenses (Details) Network

*

*

 http://millicom.com/role/CapitalStructureAndFinancingC33InterestAndOtherFinancialExpensesDetails
1185 Implied Table Table

*

*

 implied:Table
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1193 2410408 - Disclosure - Capital structure and financing - C.3.4. Finance leases (Details) Network

*

*

 http://millicom.com/role/CapitalStructureAndFinancingC34FinanceLeasesDetails
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*

*

 ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeTable
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1213 2410409 - Disclosure - Capital structure and financing - C.3.5.Guarantees and pledged assets (Details) Network

*

*

 http://millicom.com/role/CapitalStructureAndFinancingC35GuaranteesAndPledgedAssetsDetails
1214 Disclosure of contingent liabilities [table] Table

*

*

 ifrs-full:DisclosureOfContingentLiabilitiesTable
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1228 2410410 - Disclosure - Capital structure and financing - C.4. Cash and deposits (Details) Network

*

*

 http://millicom.com/role/CapitalStructureAndFinancingC4CashAndDepositsDetails
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*

*

 tigo:CashandCashEquivalentsTable
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1243 2410411 - Disclosure - Capital structure and financing - C.5. Net debt, table 1 (Details) Network

*

*

 http://millicom.com/role/CapitalStructureAndFinancingC5NetDebtTable1Details
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*

*

 implied:Table
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1254 2410412 - Disclosure - Capital structure and financing - C.5. Net debt, table 2 (Details) Network

*

*

 http://millicom.com/role/CapitalStructureAndFinancingC5NetDebtTable2Details
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*

*

 ifrs-full:DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesTable
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1293 2410413 - Disclosure - Capital structure and financing - C.6. Financial Instruments (Details) Network

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*

 http://millicom.com/role/CapitalStructureAndFinancingC6FinancialInstrumentsDetails
1294 Disclosure of fair value measurement of assets [table] Table

*

*

 ifrs-full:DisclosureOfFairValueMeasurementOfAssetsTable
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1330 2410414 - Disclosure - Capital structure and financing - C.6.3. Call and put options (Details) Network

*

*

 http://millicom.com/role/CapitalStructureAndFinancingC63CallAndPutOptionsDetails
1331 Disclosure of detailed information about business combination [table] Table

*

*

 ifrs-full:DisclosureOfBusinessCombinationsTable
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1342 2413402 - Disclosure - Financial risk management - D. Financial risk management (Details) Network

*

*

 http://millicom.com/role/FinancialRiskManagementDFinancialRiskManagementDetails
1343 Disclosure of detailed information about hedging instruments [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutHedgingInstrumentsTable
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1349 2413403 - Disclosure - Financial risk management - D.1. Interest rate risk (Details) Network

*

*

 http://millicom.com/role/FinancialRiskManagementD1InterestRateRiskDetails
1350 Disclosure of nature and extent of risks arising from financial instruments [table] Table

*

*

 ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable
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1360 Concentration percentage Concept (Percent) As Of tigo:RiskExposureAssociatedWithInstrumentsSharingCharacteristicConcentrationPercentage
1361 2413404 - Disclosure - Financial risk management - D.1.1. Fixed and floating rate debt (Details) Network

*

*

 http://millicom.com/role/FinancialRiskManagementD11FixedAndFloatingRateDebtDetails
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*

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1386 2413405 - Disclosure - Financial risk management - D.1.2. Interest rate swap contracts (Details) Network

*

*

 http://millicom.com/role/FinancialRiskManagementD12InterestRateSwapContractsDetails
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*

*

 ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable
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1402 2413406 - Disclosure - Financial risk management - D.2.1. Debt denominated in US Dollars and other currencies (Details) Network

*

*

 http://millicom.com/role/FinancialRiskManagementD21DebtDenominatedInUsDollarsAndOtherCurrenciesDetails
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1423 2413407 - Disclosure - Financial risk management - D.5. Liquidity risk (Details) Network

*

*

 http://millicom.com/role/FinancialRiskManagementD5LiquidityRiskDetails
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*

*

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1453 2413408 - Disclosure - Financial risk management - D.6. Capital management (Details) Network

*

*

 http://millicom.com/role/FinancialRiskManagementD6CapitalManagementDetails
1454 Implied Table Table

*

*

 implied:Table
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1462 2416402 - Disclosure - Long-term assets - E.1.1. Accounting for intangible assets (Details) Network

*

*

 http://millicom.com/role/LongTermAssetsE11AccountingForIntangibleAssetsDetails
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1477 2416403 - Disclosure - Long-term assets - E.1.3. Movement in intangible assets (Details) Network

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*

 http://millicom.com/role/LongTermAssetsE13MovementInIntangibleAssetsDetails
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1503 2416404 - Disclosure - Long-term assets - E.1.4. Cash used for the purchase of intangible assets (Details) Network

*

*

 http://millicom.com/role/LongTermAssetsE14CashUsedForPurchaseOfIntangibleAssetsDetails
1504 Implied Table Table

*

*

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1509 2416405 - Disclosure - Long-term assets - E.1.5. Goodwill (Details) Network

*

*

 http://millicom.com/role/LongTermAssetsE15GoodwillDetails
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*

*

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1522 2416406 - Disclosure - Long-term assets - E.1.6. Impairment testing of goodwill (Details) Network

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*

 http://millicom.com/role/LongTermAssetsE16ImpairmentTestingOfGoodwillDetails
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*

*

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1542 2416407 - Disclosure - Long-term assets - E.2.1. Accounting for property, plant and equipment (Details) Network

*

*

 http://millicom.com/role/LongTermAssetsE21AccountingForPropertyPlantAndEquipmentDetails
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1555 2416408 - Disclosure - Long-term assets - E.2.2. Movements in tangible assets (Details) Network

*

*

 http://millicom.com/role/LongTermAssetsE22MovementsInTangibleAssetsDetails
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*

*

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1581 2416409 - Disclosure - Long-term assets - E.2.3. Cash used for the purchase of tangible assets (Details) Network

*

*

 http://millicom.com/role/LongTermAssetsE23CashUsedForPurchaseOfTangibleAssetsDetails
1582 Implied Table Table

*

*

 implied:Table
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1589 2416410 - Disclosure - Long-term assets - E.3.2. Millicom's assets held for sale (Details) Network

*

*

 http://millicom.com/role/LongTermAssetsE32MillicomsAssetsHeldForSaleDetails
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1627 Operating profit Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
1628 Interest income (expense), net Concept (Monetary) For Period Credit ifrs-full:FinanceIncomeCost
1629 Other non-operating (expenses) income, net Concept (Monetary) For Period Credit tigo:OtherNonOperatingIncomeExpense
1630 Profit before taxes from continuing operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
1631 Credit (charge) for taxes, net Concept (Monetary) For Period Debit ifrs-full:TaxExpenseRelatingToProfitLossFromOrdinaryActivitiesOfDiscontinuedOperations
1632 Net profit (loss) from discontinued operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromDiscontinuedOperations
1633 Cash flows from discontinued operations [abstract] Abstract ifrs-full:CashFlowsFromContinuingAndDiscontinuedOperationsAbstract
1634 Cash from (used in) operating activities, net Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInOperatingActivitiesDiscontinuedOperations
1635 Cash from (used in) investing activities, net Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivitiesDiscontinuedOperations
1636 Cash from (used in) financing activities, net Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivitiesDiscontinuedOperations
1637 Depreciation expense catch-up Concept (Monetary) For Period Debit tigo:DepreciationExpenseCatchUp
1638 2419402 - Disclosure - Other assets and liabilities F.1. Trade receivables (Details) Network

*

*

 http://millicom.com/role/OtherAssetsAndLiabilitiesF1TradeReceivablesDetails
1639 Disclosure of financial assets that are either past due or impaired [table] Table

*

*

 ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedTable
1640 Major customers [axis] Axis ifrs-full:MajorCustomersAxis
1641 Customers [member] Member ifrs-full:MajorCustomersMember
1642 Telecom operators Member tigo:TelecomOperatorsMember
1643 Own customers Member tigo:OwnCustomersMember
1644 Others Member tigo:OtherCustomersMember
1645 Past due status [axis] Axis ifrs-full:PastDueStatusAxis
1646 Past due status [member] Member ifrs-full:PastDueStatusMember
1647 30–90 days Member ifrs-full:LaterThanOneMonthAndNotLaterThanThreeMonthsMember
1648 Greater than 90 days Member ifrs-full:LaterThanThreeMonthsMember
1649 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1650 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1651 Gross Member ifrs-full:GrossCarryingAmountMember
1652 Provisions Member ifrs-full:AccumulatedImpairmentMember
1653 Impairment of financial assets [axis] Axis ifrs-full:ImpairmentOfFinancialAssetsAxis
1654 Entity's total for impairment of financial assets [member] Member ifrs-full:EntitysTotalForImpairmentOfFinancialAssetsMember
1655 Neither past due nor impaired Member ifrs-full:FinancialAssetsNeitherPastDueNorImpairedMember
1656 Past due (net of impairments) Member tigo:FinancialAssetsPastDueNetOfImpairmentsMember
1657 Disclosure of financial assets that are either past due or impaired [line items] LineItems ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedLineItems
1658 Trade receivables, net Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
1659 2419403 - Disclosure - Other assets and liabilities F.2. Inventories (Details) Network

*

*

 http://millicom.com/role/OtherAssetsAndLiabilitiesF2InventoriesDetails
1660 Implied Table Table

*

*

 implied:Table
1661 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
1662 Telephone and equipment Concept (Monetary) As Of Debit tigo:CurrentTelephoneandEquipmentInventory
1663 SIM cards Concept (Monetary) As Of Debit tigo:CurrentSIMCardInventory
1664 IRUs Concept (Monetary) As Of Debit tigo:CurrentIndefeasibleRightofUseInventory
1665 Other Concept (Monetary) As Of Debit ifrs-full:OtherInventories
1666 Inventory Concept (Monetary) As Of Debit ifrs-full:Inventories
1667 2419404 - Disclosure - Other assets and liabilities F.3. Trade Payables (Details) Network

*

*

 http://millicom.com/role/OtherAssetsAndLiabilitiesF3TradePayablesDetails
1668 Implied Table Table

*

*

 implied:Table
1669 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
1670 Trade payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayablesToTradeSuppliers
1671 2419405 - Disclosure - Other assets and liabilities F.4.1 Current provisions and other liabilities (Details) Network

*

*

 http://millicom.com/role/OtherAssetsAndLiabilitiesF41CurrentProvisionsAndOtherLiabilitiesDetails
1672 Implied Table Table

*

*

 implied:Table
1673 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
1674 Deferred revenue Concept (Monetary) As Of Credit ifrs-full:DeferredIncome
1675 Customer deposits Concept (Monetary) As Of Credit ifrs-full:CurrentDepositsFromCustomers
1676 Current legal provisions Concept (Monetary) As Of Credit ifrs-full:ShorttermLegalProceedingsProvision
1677 Tax payables Concept (Monetary) As Of Credit ifrs-full:CurrentTaxLiabilities
1678 Customer and MFS distributor cash balances Concept (Monetary) As Of Credit ifrs-full:CurrentRefundsProvision
1679 Withholding tax on payments to third parties Concept (Monetary) As Of Credit ifrs-full:PayablesOnSocialSecurityAndTaxesOtherThanIncomeTax
1680 Other provisions Concept (Monetary) As Of Credit ifrs-full:ShorttermMiscellaneousOtherProvisions
1681 Other current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherCurrentPayables
1682 Total Concept (Monetary) As Of Credit ifrs-full:CurrentProvisions
1683 Provision for tax risk not related to income tax Concept (Monetary) As Of Credit ifrs-full:CurrentPayablesOnSocialSecurityAndTaxesOtherThanIncomeTax
1684 2419406 - Disclosure - Other assets and liabilities F.4.2. Non-current provisions and other liabilities (Details) Network

*

*

 http://millicom.com/role/OtherAssetsAndLiabilitiesF42NonCurrentProvisionsAndOtherLiabilitiesDetails
1685 Implied Table Table

*

*

 implied:Table
1686 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
1687 Non-current legal provisions Concept (Monetary) As Of Credit ifrs-full:LongtermLegalProceedingsProvision
1688 Long-term portion of asset retirement obligations Concept (Monetary) As Of Credit ifrs-full:LongtermProvisionForDecommissioningRestorationAndRehabilitationCosts
1689 Long-term portion of deferred income on tower sale and leasebacks Concept (Monetary) As Of Credit ifrs-full:DeferredIncomeClassifiedAsNoncurrent
1690 Long-term employment obligations Concept (Monetary) As Of Credit ifrs-full:NoncurrentProvisionsForEmployeeBenefits
1691 Accruals and payables in respect of spectrum and license acquisitions Concept (Monetary) As Of Credit ifrs-full:CurrentPayablesForPurchaseOfNoncurrentAssets
1692 Other non-current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentPayables
1693 Non-current provisions Concept (Monetary) As Of Credit ifrs-full:NoncurrentProvisions
1694 2419407 - Disclosure - Other assets and liabilities F.5. Assets and liabilities related to contract with customers (Details) Network

*

*

 http://millicom.com/role/OtherAssetsAndLiabilitiesF5AssetsAndLiabilitiesRelatedToContractWithCustomersDetails
1695 Contract Assets [Table] Table

*

*

 tigo:ContractAssetsTable
1696 Maturity [axis] Axis ifrs-full:MaturityAxis
1697 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1698 2021 Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
1699 2020 Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
1700 Balance Sheet Location [Axis] Axis tigo:BalanceSheetLocation1Axis
1701 Balance Sheet Location [Domain] Member tigo:BalanceSheetLocation1Domain
1702 Current contract liabilities Member tigo:CurrentContractLiabilitiesMember
1703 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1704 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1705 Gross Carrying Amount, Non-current Member tigo:GrossCarryingAmountNoncurrentMember
1706 Gross Carrying Amount, Current Member tigo:GrossCarryingAmountCurrentMember
1707 Provisions Member ifrs-full:AccumulatedImpairmentMember
1708 Contract Assets [Line Items] LineItems tigo:ContractAssetsLineItems
1709 Contract assets, net Concept (Monetary) As Of Debit ifrs-full:CurrentContractAssets
1710 Contract liabilities [abstract] Abstract ifrs-full:ContractLiabilitiesAbstract
1711 Long-term portion Concept (Monetary) As Of Credit ifrs-full:NoncurrentContractLiabilities
1712 Short-term portion Concept (Monetary) As Of Credit ifrs-full:CurrentContractLiabilities
1713 Total Concept (Monetary) As Of Credit ifrs-full:ContractLiabilities
1714 Revenue that was included in contract liability balance at beginning of period Concept (Monetary) For Period Credit ifrs-full:RevenueThatWasIncludedInContractLiabilityBalanceAtBeginningOfPeriod
1715 Transaction price allocated to remaining performance obligations Concept (Monetary) As Of Credit ifrs-full:TransactionPriceAllocatedToRemainingPerformanceObligations
1716 Contract costs, net, beginning of period Concept (Monetary) As Of Debit ifrs-full:AssetsRecognisedFromCostsToObtainOrFulfilContractsWithCustomers
1717 Contract costs capitalized Concept (Monetary) For Period Debit tigo:IncreaseThroughCapitalisationofContractAssets
1718 Amortisation, assets recognised from costs incurred to obtain or fulfil contracts with customers Concept (Monetary) For Period Debit ifrs-full:AmortisationAssetsRecognisedFromCostsIncurredToObtainOrFulfilContractsWithCustomers
1719 Contract costs, net, end of period Concept (Monetary) As Of Debit ifrs-full:AssetsRecognisedFromCostsToObtainOrFulfilContractsWithCustomers
1720 2422402 - Disclosure - Additional disclosure items G.1 Fees to auditors (Details) Network

*

*

 http://millicom.com/role/AdditionalDisclosureItemsG1FeesToAuditorsDetails
1721 Implied Table Table

*

*

 implied:Table
1722 Additional information [abstract] Abstract ifrs-full:AdditionalInformationAbstract
1723 Auditor's remuneration [abstract] Abstract ifrs-full:AuditorsRemunerationAbstract
1724 Audit fees Concept (Monetary) For Period Debit ifrs-full:AuditorsRemunerationForAuditServices
1725 Audit related fees Concept (Monetary) For Period Debit tigo:AuditorsRemunerationForAuditRelatedServices
1726 Tax fees Concept (Monetary) For Period Debit ifrs-full:AuditorsRemunerationForTaxServices
1727 Other fees Concept (Monetary) For Period Debit ifrs-full:AuditorsRemunerationForOtherServices
1728 Total Concept (Monetary) For Period Debit ifrs-full:AuditorsRemuneration
1729 2422403 - Disclosure - Additional disclosure items G.2.1. Capital commitments (Details) Network

*

*

 http://millicom.com/role/AdditionalDisclosureItemsG21CapitalCommitmentsDetails
1730 Capital Commitments [Table] Table

*

*

 tigo:CapitalCommitmentsTable
1731 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
1732 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
1733 Joint ventures Member ifrs-full:JointVenturesMember
1734 Maturity [axis] Axis ifrs-full:MaturityAxis
1735 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1736 1 year Member ifrs-full:NotLaterThanOneYearMember
1737 Capital Commitments [Line Items] LineItems tigo:CapitalCommitmentsLineItems
1738 Capital commitments Concept (Monetary) As Of Credit ifrs-full:CapitalCommitments
1739 2422404 - Disclosure - Additional disclosure items G.2.2. Lease commitments (Details) Network

*

*

 http://millicom.com/role/AdditionalDisclosureItemsG22LeaseCommitmentsDetails
1740 Disclosure of finance lease and operating lease by lessee [table] Table

*

*

 ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeTable
1741 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
1742 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
1743 Joint ventures Member ifrs-full:JointVenturesMember
1744 Maturity [axis] Axis ifrs-full:MaturityAxis
1745 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1746 1 year Member ifrs-full:NotLaterThanOneYearMember
1747 1 to 5 years Member ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
1748 Greater than 5 years Member ifrs-full:LaterThanFiveYearsMember
1749 Disclosure of finance lease and operating lease by lessee [line items] LineItems ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeLineItems
1750 Minimum operating lease payments recognised as expense Concept (Monetary) For Period Debit ifrs-full:MinimumOperatingLeasePayments
1751 Minimum lease payments payable under non-cancellable operating lease Concept (Monetary) As Of Credit ifrs-full:MinimumLeasePaymentsPayableUnderNoncancellableOperatingLease
1752 Minimum finance lease payments payable Concept (Monetary) As Of Credit ifrs-full:MinimumFinanceLeasePaymentsPayable
1753 Finance lease liabilities Concept (Monetary) As Of Credit ifrs-full:FinanceLeaseLiabilities
1754 Interest expense on finance leases Concept (Monetary) For Period Debit ifrs-full:InterestExpenseOnFinanceLeases
1755 2422405 - Disclosure - Additional disclosure items G.3.1. Litigation and legal risks (Details) Network

*

*

 http://millicom.com/role/AdditionalDisclosureItemsG31LitigationAndLegalRisksDetails
1756 Disclosure of contingent liabilities [table] Table

*

*

 ifrs-full:DisclosureOfContingentLiabilitiesTable
1757 Classes of contingent liabilities [axis] Axis ifrs-full:ClassesOfContingentLiabilitiesAxis
1758 Contingent liabilities [member] Member ifrs-full:ContingentLiabilitiesMember
1759 Legal proceedings contingent liability Member ifrs-full:LegalProceedingsContingentLiabilityMember
1760 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
1761 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
1762 Joint ventures Member ifrs-full:JointVenturesMember
1763 Disclosure of contingent liabilities [line items] LineItems ifrs-full:DisclosureOfContingentLiabilitiesLineItems
1764 Estimated financial effect of contingent liabilities Concept (Monetary) As Of ifrs-full:EstimatedFinancialEffectOfContingentLiabilities
1765 Legal proceedings provision Concept (Monetary) As Of Credit ifrs-full:LegalProceedingsProvision
1766 2422406 - Disclosure - Additional disclosure items G.3.2. Tax related risks and uncertain tax position (Details) Network

*

*

 http://millicom.com/role/AdditionalDisclosureItemsG32TaxRelatedRisksAndUncertainTaxPositionDetails
1767 Disclosure of other provisions [table] Table

*

*

 ifrs-full:DisclosureOfOtherProvisionsTable
1768 Range [axis] Axis ifrs-full:RangeAxis
1769 Ranges [member] Member ifrs-full:RangesMember
1770 Bottom of range Member ifrs-full:BottomOfRangeMember
1771 Top of range Member ifrs-full:TopOfRangeMember
1772 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
1773 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
1774 Joint ventures Member ifrs-full:JointVenturesMember
1775 Classes of contingent liabilities [axis] Axis ifrs-full:ClassesOfContingentLiabilitiesAxis
1776 Contingent liabilities [member] Member ifrs-full:ContingentLiabilitiesMember
1777 Tax contingent liability Member ifrs-full:TaxContingentLiabilityMember
1778 Classes of other provisions [axis] Axis ifrs-full:ClassesOfProvisionsAxis
1779 Other provisions [member] Member ifrs-full:OtherProvisionsMember
1780 Provision for taxes other than income tax Member ifrs-full:ProvisionForTaxesOtherThanIncomeTaxMember
1781 Disclosure of other provisions [line items] LineItems ifrs-full:DisclosureOfOtherProvisionsLineItems
1782 Uncertain tax positions, remote risk Concept (Percent) As Of tigo:UncertainTaxPositionsRemoteRiskPercentage
1783 Uncertain tax positions, possible risk Concept (Percent) As Of tigo:UncertainTaxPositionsPossibleRisksPercentage
1784 Uncertain tax positions, probable risk Concept (Percent) As Of tigo:UncertainTaxPositionsProbableRiskPercentage
1785 Other provisions Concept (Monetary) As Of Credit ifrs-full:OtherProvisions
1786 Estimated financial effect of contingent liabilities Concept (Monetary) As Of ifrs-full:EstimatedFinancialEffectOfContingentLiabilities
1787 2422407 - Disclosure - Additional disclosure items G.4. Non-cash investing and financing activity (Details) Network

*

*

 http://millicom.com/role/AdditionalDisclosureItemsG4NonCashInvestingAndFinancingActivityDetails
1788 Implied Table Table

*

*

 implied:Table
1789 Additional information [abstract] Abstract ifrs-full:AdditionalInformationAbstract
1790 Acquisition of property, plant and equipment, including finance leases Concept (Monetary) For Period Debit tigo:NoncashAcquisitionofPropertyPlantandEquipment
1791 Asset retirement obligations Concept (Monetary) For Period Credit tigo:NoncashIncreaseDecreaseinProvisionforDecommissioningRestorationandRehabilitationCosts
1792 Acquisition of subsidiaries, joint ventures and associates, net of cash acquired Concept (Monetary) For Period Credit tigo:NoncashAcquisitionOfSubsidiariesJointVenturesAndAssociatesNetOfCashAcquired
1793 Finance leases Concept (Monetary) For Period Credit ifrs-full:IncreaseThroughNewLeasesLiabilitiesArisingFromFinancingActivities
1794 Share based compensation Concept (Monetary) For Period Debit tigo:ShareBasedCompensationExpenseFinancingActivities
1795 2422408 - Disclosure - Additional disclosure items G.5. Related party balances and transactions (Details) Network

*

*

 http://millicom.com/role/AdditionalDisclosureItemsG5RelatedPartyBalancesAndTransactionsDetails
1796 Disclosure of transactions between related parties [table] Table

*

*

 ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
1797 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1798 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1799 Colombia Member tigo:ColombiaSubsidiariesMember
1800 Cable Onda S.A Member tigo:CableOndaS.AMember
1801 Counterparties [axis] Axis ifrs-full:CounterpartiesAxis
1802 Counterparties [member] Member ifrs-full:CounterpartiesMember
1803 Kinnevik Member tigo:KinnevikMember
1804 Miffin Member tigo:MiffinAssociatesCorpMember
1805 Guatemala joint ventures Member tigo:GuatemalaJointVenturesMember
1806 Honduras joint ventures Member tigo:HondurasJointVenturesMember
1807 EPM Member tigo:EmpresasPublicasdeMedellinMember
1808 Helios Towers Africa Ltd (HTA) Member tigo:HeliosTowersAfricaLtdHTAMember
1809 Ghana Member tigo:AirtelTigoGhanaHoldingsB.V.Member
1810 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1811 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1812 Principal shareholder Member tigo:PrincipalShareholderMember
1813 Entities with joint control or significant influence over entity Member ifrs-full:JointControlOrSignificantInfluenceMember
1814 Joint ventures where entity is venturer Member ifrs-full:JointVenturesWhereEntityIsVenturerMember
1815 Other related parties Member ifrs-full:OtherRelatedPartiesMember
1816 Disclosure of transactions between related parties [line items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
1817 Shareholder Ownership Percentage Concept (Percent) As Of tigo:ShareholderOwnershipPercentage
1818 Percentage ownership help by non-controlling interest Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestsHeldByNoncontrollingInterests
1819 Expenses from transactions with related parties Abstract tigo:ExpensesFromTransactionsWithRelatedPartiesAbstract
1820 Purchases of goods and services Concept (Monetary) For Period Debit ifrs-full:PurchasesOfGoodsRelatedPartyTransactions
1821 Lease of towers and related services from HTA Concept (Monetary) For Period ifrs-full:LeasesAsLesseeRelatedPartyTransactions
1822 Other expenses Concept (Monetary) For Period Debit tigo:OtherExpensesRelatedPartyTransactions
1823 Total Concept (Monetary) For Period Debit tigo:RelatedPartyExpenses
1824 Income and gains from transactions with related parties Abstract tigo:IncomeFromTransactionsWithRelatedPartiesAbstract
1825 Sale of goods and services Concept (Monetary) For Period Credit tigo:RevenuefromSalesofGoodsandRenderingofServicesRelatedPartyTransactions
1826 Other revenue Concept (Monetary) For Period Credit tigo:OtherRevenueRelatedPartyTransactions
1827 Total Concept (Monetary) For Period Credit tigo:RevenuefromRelatedPartyTransactions
1828 LIABILITIES Abstract ifrs-full:LiabilitiesAbstract
1829 Sub-total Concept (Monetary) As Of Credit ifrs-full:AmountsPayableRelatedPartyTransactions
1830 Finance lease liabilities to tower companies(iii) Concept (Monetary) As Of Credit tigo:FinanceLeasesPayableRelatedPartyTransactions
1831 Total Concept (Monetary) As Of Credit tigo:AccountsPayableandFinanceLeasePayableRelatedPartyTransactions
1832 Amounts due to non-controlling interests, associates and joint ventures Concept (Monetary) As Of Credit ifrs-full:NoncurrentPayablesToRelatedParties
1833 Amounts receivable Concept (Monetary) As Of Debit ifrs-full:AmountsReceivableRelatedPartyTransactions
1834 2425401 - Disclosure - IPO - Millicom's operations in Tanzania (Details) Network

*

*

 http://millicom.com/role/IpoMillicomsOperationsInTanzaniaDetails
1835 Disclosure of classes of share capital [table] Table

*

*

 ifrs-full:DisclosureOfClassesOfShareCapitalTable
1836 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1837 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1838 Tigo Tanzania [Member] Member tigo:TigoTanzaniaMember
1839 Disclosure of classes of share capital [line items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
1840 Percentage of Outstanding Capital Required to be Sold in Public Offering Concept (Percent) For Period tigo:PercentageofOutstandingCapitalRequiredtobeSoldinPublicOffering
1841 2426401 - Disclosure - Subsequent events (Details) Network

*

*

 http://millicom.com/role/SubsequentEventsDetails
1842 Disclosure of non-adjusting events after reporting period [table] Table

*

*

 ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodTable
1843 Non-adjusting events after reporting period [axis] Axis ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
1844 Non-adjusting events after reporting period [member] Member ifrs-full:NonadjustingEventsMember
1845 Dividend Member ifrs-full:PotentialOrdinaryShareTransactionsMember
1846 Major business combination Member ifrs-full:MajorBusinessCombinationMember
1847 Disclosure of non-adjusting events after reporting period [line items] LineItems ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems
1848 Dividends proposed (per share) Concept (Share) For Period ifrs-full:DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerShare
1849 Acquisition price Concept (Monetary) As Of Credit ifrs-full:AcquisitiondateFairValueOfTotalConsiderationTransferred

*

*