3.26.1 html 1629 737 1 true 395 0 false 12 false false R1.htm 995200090 - Document - Document and Entity Information Sheet http://www.turkcell.com/role/DocumentDocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 995200100 - Statement - CONSOLIDATED STATEMENT OF FINANCIAL POSITION Sheet http://www.turkcell.com/role/StatementConsolidatedStatementOfFinancialPosition CONSOLIDATED STATEMENT OF FINANCIAL POSITION Statements 2 false false R3.htm 995200200 - Statement - CONSOLIDATED STATEMENT OF PROFIT OR LOSS Sheet http://www.turkcell.com/role/StatementConsolidatedStatementOfProfitOrLoss CONSOLIDATED STATEMENT OF PROFIT OR LOSS Statements 3 false false R4.htm 995200300 - Statement - CONSOLIDATED STATEMENT OF OTHER COMPREHENSIVE INCOME Sheet http://www.turkcell.com/role/StatementConsolidatedStatementOfOtherComprehensiveIncome CONSOLIDATED STATEMENT OF OTHER COMPREHENSIVE INCOME Statements 4 false false R5.htm 995200400 - Statement - CONSOLIDATED STATEMENT OF CHANGES IN EQUITY Sheet http://www.turkcell.com/role/StatementConsolidatedStatementOfChangesInEquity CONSOLIDATED STATEMENT OF CHANGES IN EQUITY Statements 5 false false R6.htm 995200500 - Statement - CONSOLIDATED STATEMENT OF CASH FLOWS Sheet http://www.turkcell.com/role/StatementConsolidatedStatementOfCashFlows CONSOLIDATED STATEMENT OF CASH FLOWS Statements 6 false false R7.htm 995210101 - Disclosure - Reporting entity Sheet http://www.turkcell.com/role/DisclosureReportingEntity Reporting entity Notes 7 false false R8.htm 995210201 - Disclosure - Basis of preparation and summary of material accounting policies Sheet http://www.turkcell.com/role/DisclosureBasisOfPreparationAndSummaryOfMaterialAccountingPolicies Basis of preparation and summary of material accounting policies Notes 8 false false R9.htm 995210301 - Disclosure - Discontinued operations Sheet http://www.turkcell.com/role/DisclosureDiscontinuedOperations Discontinued operations Notes 9 false false R10.htm 995210401 - Disclosure - Financial risk management Sheet http://www.turkcell.com/role/DisclosureFinancialRiskManagement Financial risk management Notes 10 false false R11.htm 995210501 - Disclosure - Segment information Sheet http://www.turkcell.com/role/DisclosureSegmentInformation Segment information Notes 11 false false R12.htm 995210601 - Disclosure - Revenue Sheet http://www.turkcell.com/role/DisclosureRevenue Revenue Notes 12 false false R13.htm 995210701 - Disclosure - Other income and expense Sheet http://www.turkcell.com/role/DisclosureOtherIncomeAndExpense Other income and expense Notes 13 false false R14.htm 995210801 - Disclosure - Employee benefit expenses Sheet http://www.turkcell.com/role/DisclosureEmployeeBenefitExpenses Employee benefit expenses Notes 14 false false R15.htm 995210901 - Disclosure - Finance income and costs Sheet http://www.turkcell.com/role/DisclosureFinanceIncomeAndCosts Finance income and costs Notes 15 false false R16.htm 995211001 - Disclosure - Income tax expense Sheet http://www.turkcell.com/role/DisclosureIncomeTaxExpense Income tax expense Notes 16 false false R17.htm 995211101 - Disclosure - Expenses by nature Sheet http://www.turkcell.com/role/DisclosureExpensesByNature Expenses by nature Notes 17 false false R18.htm 995211201 - Disclosure - Property, plant and equipment Sheet http://www.turkcell.com/role/DisclosurePropertyPlantAndEquipment Property, plant and equipment Notes 18 false false R19.htm 995211301 - Disclosure - Intangible assets Sheet http://www.turkcell.com/role/DisclosureIntangibleAssets Intangible assets Notes 19 false false R20.htm 995211401 - Disclosure - Impairment of non-financial assets Sheet http://www.turkcell.com/role/DisclosureImpairmentOfNonFinancialAssets Impairment of non-financial assets Notes 20 false false R21.htm 995211501 - Disclosure - Investment properties Sheet http://www.turkcell.com/role/DisclosureInvestmentProperties Investment properties Notes 21 false false R22.htm 995211601 - Disclosure - Right-of-use assets Sheet http://www.turkcell.com/role/DisclosureRightOfUseAssets Right-of-use assets Notes 22 false false R23.htm 995211701 - Disclosure - Other assets Sheet http://www.turkcell.com/role/DisclosureOtherAssets Other assets Notes 23 false false R24.htm 995211801 - Disclosure - Deferred tax assets and liabilities Sheet http://www.turkcell.com/role/DisclosureDeferredTaxAssetsAndLiabilities Deferred tax assets and liabilities Notes 24 false false R25.htm 995211901 - Disclosure - Trade receivables Sheet http://www.turkcell.com/role/DisclosureTradeReceivables Trade receivables Notes 25 false false R26.htm 995212001 - Disclosure - Receivables from financial services Sheet http://www.turkcell.com/role/DisclosureReceivablesFromFinancialServices Receivables from financial services Notes 26 false false R27.htm 995212101 - Disclosure - Contract assets Sheet http://www.turkcell.com/role/DisclosureContractAssets Contract assets Notes 27 false false R28.htm 995212201 - Disclosure - Inventories Sheet http://www.turkcell.com/role/DisclosureInventories Inventories Notes 28 false false R29.htm 995212301 - Disclosure - Cash and cash equivalents Sheet http://www.turkcell.com/role/DisclosureCashAndCashEquivalents Cash and cash equivalents Notes 29 false false R30.htm 995212401 - Disclosure - Financial assets Sheet http://www.turkcell.com/role/DisclosureFinancialAssets Financial assets Notes 30 false false R31.htm 995212501 - Disclosure - Equity Sheet http://www.turkcell.com/role/DisclosureEquity Equity Notes 31 false false R32.htm 995212601 - Disclosure - Earnings per share Sheet http://www.turkcell.com/role/DisclosureEarningsPerShare Earnings per share Notes 32 false false R33.htm 995212701 - Disclosure - Other non-current liabilities Sheet http://www.turkcell.com/role/DisclosureOtherNonCurrentLiabilities Other non-current liabilities Notes 33 false false R34.htm 995212801 - Disclosure - Loans and borrowings Sheet http://www.turkcell.com/role/DisclosureLoansAndBorrowings Loans and borrowings Notes 34 false false R35.htm 995212901 - Disclosure - Employee benefits Sheet http://www.turkcell.com/role/DisclosureEmployeeBenefits Employee benefits Notes 35 false false R36.htm 995213001 - Disclosure - Deferred revenue Sheet http://www.turkcell.com/role/DisclosureDeferredRevenue Deferred revenue Notes 36 false false R37.htm 995213101 - Disclosure - Contract liabilities Sheet http://www.turkcell.com/role/DisclosureContractLiabilities Contract liabilities Notes 37 false false R38.htm 995213201 - Disclosure - Provisions Sheet http://www.turkcell.com/role/DisclosureProvisions Provisions Notes 38 false false R39.htm 995213301 - Disclosure - Trade and other payables Sheet http://www.turkcell.com/role/DisclosureTradeAndOtherPayables Trade and other payables Notes 39 false false R40.htm 995213401 - Disclosure - Derivative financial instruments Sheet http://www.turkcell.com/role/DisclosureDerivativeFinancialInstruments Derivative financial instruments Notes 40 false false R41.htm 995213501 - Disclosure - Financial instruments Sheet http://www.turkcell.com/role/DisclosureFinancialInstruments Financial instruments Notes 41 false false R42.htm 995213601 - Disclosure - Guarantees and purchase obligations Sheet http://www.turkcell.com/role/DisclosureGuaranteesAndPurchaseObligations Guarantees and purchase obligations Notes 42 false false R43.htm 995213701 - Disclosure - Commitments and Contingencies Sheet http://www.turkcell.com/role/DisclosureCommitmentsAndContingencies Commitments and Contingencies Notes 43 false false R44.htm 995213801 - Disclosure - Related parties Sheet http://www.turkcell.com/role/DisclosureRelatedParties Related parties Notes 44 false false R45.htm 995213901 - Disclosure - Subsidiaries Sheet http://www.turkcell.com/role/DisclosureSubsidiaries Subsidiaries Notes 45 false false R46.htm 995214001 - Disclosure - Investments accounted for using the equity method Sheet http://www.turkcell.com/role/DisclosureInvestmentsAccountedForUsingEquityMethod Investments accounted for using the equity method Notes 46 false false R47.htm 995214101 - Disclosure - Cash flow information Sheet http://www.turkcell.com/role/DisclosureCashFlowInformation Cash flow information Notes 47 false false R48.htm 995214201 - Disclosure - Subsequent events Sheet http://www.turkcell.com/role/DisclosureSubsequentEvents Subsequent events Notes 48 false false R49.htm 995447 - Disclosure - Insider Trading Policies and Procedures Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingPoliciesProc Insider Trading Policies and Procedures Notes 49 false false R50.htm 995550 - Disclosure - Cybersecurity Risk Management and Strategy Disclosure Sheet http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure Cybersecurity Risk Management and Strategy Disclosure Notes 50 false false R51.htm 99920202 - Disclosure - Basis of preparation and summary of material accounting policies (Policies) Sheet http://www.turkcell.com/role/DisclosureBasisOfPreparationAndSummaryOfMaterialAccountingPoliciesPolicies Basis of preparation and summary of material accounting policies (Policies) Policies 51 false false R52.htm 99930203 - Disclosure - Basis of preparation and summary of material accounting policies (Tables) Sheet http://www.turkcell.com/role/DisclosureBasisOfPreparationAndSummaryOfMaterialAccountingPoliciesTables Basis of preparation and summary of material accounting policies (Tables) Tables http://www.turkcell.com/role/DisclosureBasisOfPreparationAndSummaryOfMaterialAccountingPolicies 52 false false R53.htm 99930303 - Disclosure - Discontinued operations (Tables) Sheet http://www.turkcell.com/role/DisclosureDiscontinuedOperationsTables Discontinued operations (Tables) Tables http://www.turkcell.com/role/DisclosureDiscontinuedOperations 53 false false R54.htm 99930503 - Disclosure - Segment information (Tables) Sheet http://www.turkcell.com/role/DisclosureSegmentInformationTables Segment information (Tables) Tables http://www.turkcell.com/role/DisclosureSegmentInformation 54 false false R55.htm 99930603 - Disclosure - Revenue (Tables) Sheet http://www.turkcell.com/role/DisclosureRevenueTables Revenue (Tables) Tables http://www.turkcell.com/role/DisclosureRevenue 55 false false R56.htm 99930703 - Disclosure - Other income and expense (Tables) Sheet http://www.turkcell.com/role/DisclosureOtherIncomeAndExpenseTables Other income and expense (Tables) Tables http://www.turkcell.com/role/DisclosureOtherIncomeAndExpense 56 false false R57.htm 99930803 - Disclosure - Employee benefit expenses (Tables) Sheet http://www.turkcell.com/role/DisclosureEmployeeBenefitExpensesTables Employee benefit expenses (Tables) Tables http://www.turkcell.com/role/DisclosureEmployeeBenefitExpenses 57 false false R58.htm 99930903 - Disclosure - Finance income and costs (Tables) Sheet http://www.turkcell.com/role/DisclosureFinanceIncomeAndCostsTables Finance income and costs (Tables) Tables http://www.turkcell.com/role/DisclosureFinanceIncomeAndCosts 58 false false R59.htm 99931003 - Disclosure - Income tax expense (Tables) Sheet http://www.turkcell.com/role/DisclosureIncomeTaxExpenseTables Income tax expense (Tables) Tables http://www.turkcell.com/role/DisclosureIncomeTaxExpense 59 false false R60.htm 99931103 - Disclosure - Expenses by nature (Tables) Sheet http://www.turkcell.com/role/DisclosureExpensesByNatureTables Expenses by nature (Tables) Tables http://www.turkcell.com/role/DisclosureExpensesByNature 60 false false R61.htm 99931203 - Disclosure - Property, plant and equipment (Tables) Sheet http://www.turkcell.com/role/DisclosurePropertyPlantAndEquipmentTables Property, plant and equipment (Tables) Tables http://www.turkcell.com/role/DisclosurePropertyPlantAndEquipment 61 false false R62.htm 99931303 - Disclosure - Intangible assets (Tables) Sheet http://www.turkcell.com/role/DisclosureIntangibleAssetsTables Intangible assets (Tables) Tables http://www.turkcell.com/role/DisclosureIntangibleAssets 62 false false R63.htm 99931503 - Disclosure - Investment properties (Tables) Sheet http://www.turkcell.com/role/DisclosureInvestmentPropertiesTables Investment properties (Tables) Tables http://www.turkcell.com/role/DisclosureInvestmentProperties 63 false false R64.htm 99931603 - Disclosure - Right-of-use assets (Tables) Sheet http://www.turkcell.com/role/DisclosureRightOfUseAssetsTables Right-of-use assets (Tables) Tables http://www.turkcell.com/role/DisclosureRightOfUseAssets 64 false false R65.htm 99931703 - Disclosure - Other assets (Tables) Sheet http://www.turkcell.com/role/DisclosureOtherAssetsTables Other assets (Tables) Tables http://www.turkcell.com/role/DisclosureOtherAssets 65 false false R66.htm 99931803 - Disclosure - Deferred tax assets and liabilities (Tables) Sheet http://www.turkcell.com/role/DisclosureDeferredTaxAssetsAndLiabilitiesTables Deferred tax assets and liabilities (Tables) Tables http://www.turkcell.com/role/DisclosureDeferredTaxAssetsAndLiabilities 66 false false R67.htm 99931903 - Disclosure - Trade receivables (Tables) Sheet http://www.turkcell.com/role/DisclosureTradeReceivablesTables Trade receivables (Tables) Tables http://www.turkcell.com/role/DisclosureTradeReceivables 67 false false R68.htm 99932003 - Disclosure - Receivables from financial services (Tables) Sheet http://www.turkcell.com/role/DisclosureReceivablesFromFinancialServicesTables Receivables from financial services (Tables) Tables http://www.turkcell.com/role/DisclosureReceivablesFromFinancialServices 68 false false R69.htm 99932103 - Disclosure - Contract assets (Tables) Sheet http://www.turkcell.com/role/DisclosureContractAssetsTables Contract assets (Tables) Tables http://www.turkcell.com/role/DisclosureContractAssets 69 false false R70.htm 99932303 - Disclosure - Cash and cash equivalents (Tables) Sheet http://www.turkcell.com/role/DisclosureCashAndCashEquivalentsTables Cash and cash equivalents (Tables) Tables http://www.turkcell.com/role/DisclosureCashAndCashEquivalents 70 false false R71.htm 99932403 - Disclosure - Financial assets (Tables) Sheet http://www.turkcell.com/role/DisclosureFinancialAssetsTables Financial assets (Tables) Tables http://www.turkcell.com/role/DisclosureFinancialAssets 71 false false R72.htm 99932503 - Disclosure - Equity (Tables) Sheet http://www.turkcell.com/role/DisclosureEquityTables Equity (Tables) Tables http://www.turkcell.com/role/DisclosureEquity 72 false false R73.htm 99932603 - Disclosure - Earnings per share (Tables) Sheet http://www.turkcell.com/role/DisclosureEarningsPerShareTables Earnings per share (Tables) Tables http://www.turkcell.com/role/DisclosureEarningsPerShare 73 false false R74.htm 99932703 - Disclosure - Other non-current liabilities (Tables) Sheet http://www.turkcell.com/role/DisclosureOtherNonCurrentLiabilitiesTables Other non-current liabilities (Tables) Tables http://www.turkcell.com/role/DisclosureOtherNonCurrentLiabilities 74 false false R75.htm 99932803 - Disclosure - Loans and borrowings (Tables) Sheet http://www.turkcell.com/role/DisclosureLoansAndBorrowingsTables Loans and borrowings (Tables) Tables http://www.turkcell.com/role/DisclosureLoansAndBorrowings 75 false false R76.htm 99932903 - Disclosure - Employee benefits (Tables) Sheet http://www.turkcell.com/role/DisclosureEmployeeBenefitsTables Employee benefits (Tables) Tables http://www.turkcell.com/role/DisclosureEmployeeBenefitExpenses 76 false false R77.htm 99933103 - Disclosure - Contract liabilities (Tables) Sheet http://www.turkcell.com/role/DisclosureContractLiabilitiesTables Contract liabilities (Tables) Tables http://www.turkcell.com/role/DisclosureContractLiabilities 77 false false R78.htm 99933203 - Disclosure - Provisions (Tables) Sheet http://www.turkcell.com/role/DisclosureProvisionsTables Provisions (Tables) Tables http://www.turkcell.com/role/DisclosureProvisions 78 false false R79.htm 99933303 - Disclosure - Trade and other payables (Tables) Sheet http://www.turkcell.com/role/DisclosureTradeAndOtherPayablesTables Trade and other payables (Tables) Tables http://www.turkcell.com/role/DisclosureTradeAndOtherPayables 79 false false R80.htm 99933403 - Disclosure - Derivative financial instruments (Tables) Sheet http://www.turkcell.com/role/DisclosureDerivativeFinancialInstrumentsTables Derivative financial instruments (Tables) Tables http://www.turkcell.com/role/DisclosureDerivativeFinancialInstruments 80 false false R81.htm 99933503 - Disclosure - Financial instruments (Tables) Sheet http://www.turkcell.com/role/DisclosureFinancialInstrumentsTables Financial instruments (Tables) Tables http://www.turkcell.com/role/DisclosureFinancialInstruments 81 false false R82.htm 99933803 - Disclosure - Related parties (Tables) Sheet http://www.turkcell.com/role/DisclosureRelatedPartiesTables Related parties (Tables) Tables http://www.turkcell.com/role/DisclosureRelatedParties 82 false false R83.htm 99933903 - Disclosure - Subsidiaries (Tables) Sheet http://www.turkcell.com/role/DisclosureSubsidiariesTables Subsidiaries (Tables) Tables http://www.turkcell.com/role/DisclosureSubsidiaries 83 false false R84.htm 99934003 - Disclosure - Investments accounted for using the equity method (Tables) Sheet http://www.turkcell.com/role/DisclosureInvestmentsAccountedForUsingEquityMethodTables Investments accounted for using the equity method (Tables) Tables http://www.turkcell.com/role/DisclosureInvestmentsAccountedForUsingEquityMethod 84 false false R85.htm 99934103 - Disclosure - Cash flow information (Tables) Sheet http://www.turkcell.com/role/DisclosureCashFlowInformationTables Cash flow information (Tables) Tables http://www.turkcell.com/role/DisclosureCashFlowInformation 85 false false R86.htm 99940101 - Disclosure - Reporting entity - Additional information (Detail) Sheet http://www.turkcell.com/role/DisclosureReportingEntityAdditionalInformationDetail Reporting entity - Additional information (Detail) Details 86 false false R87.htm 99940201 - Disclosure - Basis of preparation and summary of material accounting policies - Additional information (Detail) Sheet http://www.turkcell.com/role/DisclosureBasisOfPreparationAndSummaryOfMaterialAccountingPoliciesAdditionalInformationDetail Basis of preparation and summary of material accounting policies - Additional information (Detail) Details 87 false false R88.htm 99940202 - Disclosure - Basis of preparation and summary of material accounting policies - Evolution of CPI (Details) Sheet http://www.turkcell.com/role/DisclosureBasisOfPreparationAndSummaryOfMaterialAccountingPoliciesEvolutionOfCpiDetails Basis of preparation and summary of material accounting policies - Evolution of CPI (Details) Details 88 false false R89.htm 99940203 - Disclosure - Basis of preparation and summary of material accounting policies - Disclosure of estimated useful lives (Detail) Sheet http://www.turkcell.com/role/DisclosureBasisOfPreparationAndSummaryOfMaterialAccountingPoliciesDisclosureOfEstimatedUsefulLivesDetail Basis of preparation and summary of material accounting policies - Disclosure of estimated useful lives (Detail) Details 89 false false R90.htm 99940204 - Disclosure - Basis of preparation and summary of material accounting policies - Disclosure of estimated useful lives for intangible assets (Detail) Sheet http://www.turkcell.com/role/DisclosureBasisOfPreparationAndSummaryOfMaterialAccountingPoliciesDisclosureOfEstimatedUsefulLivesForIntangibleAssetsDetail Basis of preparation and summary of material accounting policies - Disclosure of estimated useful lives for intangible assets (Detail) Details 90 false false R91.htm 99940205 - Disclosure - Basis of preparation and summary of material accounting policies - Disclosure of estimated useful lives for investment properties (Detail) Sheet http://www.turkcell.com/role/DisclosureBasisOfPreparationAndSummaryOfMaterialAccountingPoliciesDisclosureOfEstimatedUsefulLivesForInvestmentPropertiesDetail Basis of preparation and summary of material accounting policies - Disclosure of estimated useful lives for investment properties (Detail) Details 91 false false R92.htm 99940301 - Disclosure - Discontinued operations - Additional information (Details) Sheet http://www.turkcell.com/role/DisclosureDiscontinuedOperationsAdditionalInformationDetails Discontinued operations - Additional information (Details) Details 92 false false R93.htm 99940302 - Disclosure - Discontinued operations - Profit or loss (Details) Sheet http://www.turkcell.com/role/DisclosureDiscontinuedOperationsProfitOrLossDetails Discontinued operations - Profit or loss (Details) Details 93 false false R94.htm 99940303 - Disclosure - Discontinued operations - Cash flows (Details) Sheet http://www.turkcell.com/role/DisclosureDiscontinuedOperationsCashFlowsDetails Discontinued operations - Cash flows (Details) Details 94 false false R95.htm 99940401 - Disclosure - Financial risk management - Additional information (Detail) Sheet http://www.turkcell.com/role/DisclosureFinancialRiskManagementAdditionalInformationDetail Financial risk management - Additional information (Detail) Details 95 false false R96.htm 99940501 - Disclosure - Segment information - Additional information (Detail) Sheet http://www.turkcell.com/role/DisclosureSegmentInformationAdditionalInformationDetail Segment information - Additional information (Detail) Details 96 false false R97.htm 99940502 - Disclosure - Segment information - Reconciliation of adjusted EBITDA to consolidated profit before income tax and profit (Detail) Sheet http://www.turkcell.com/role/DisclosureSegmentInformationReconciliationOfAdjustedEbitdaToConsolidatedProfitBeforeIncomeTaxAndProfitDetail Segment information - Reconciliation of adjusted EBITDA to consolidated profit before income tax and profit (Detail) Details 97 false false R98.htm 99940503 - Disclosure - Segment information - Summary of geographical information (Detail) Sheet http://www.turkcell.com/role/DisclosureSegmentInformationSummaryOfGeographicalInformationDetail Segment information - Summary of geographical information (Detail) Details 98 false false R99.htm 99940601 - Disclosure - Revenue - Summary of revenue (Detail) Sheet http://www.turkcell.com/role/DisclosureRevenueSummaryOfRevenueDetail Revenue - Summary of revenue (Detail) Details 99 false false R100.htm 99940602 - Disclosure - Revenue - Summary of revenues by recognition (Detail) Sheet http://www.turkcell.com/role/DisclosureRevenueSummaryOfRevenuesByRecognitionDetail Revenue - Summary of revenues by recognition (Detail) Details 100 false false R101.htm 99940701 - Disclosure - Other income and expense - Additional information (Detail) Sheet http://www.turkcell.com/role/DisclosureOtherIncomeAndExpenseAdditionalInformationDetail Other income and expense - Additional information (Detail) Details 101 false false R102.htm 99940801 - Disclosure - Employee benefit expenses - Summary of employee benefit expenses (Detail) Sheet http://www.turkcell.com/role/DisclosureEmployeeBenefitExpensesSummaryOfEmployeeBenefitExpensesDetail Employee benefit expenses - Summary of employee benefit expenses (Detail) Details 102 false false R103.htm 99940901 - Disclosure - Finance income and costs - Summary of finance income and costs (Detail) Sheet http://www.turkcell.com/role/DisclosureFinanceIncomeAndCostsSummaryOfFinanceIncomeAndCostsDetail Finance income and costs - Summary of finance income and costs (Detail) Details 103 false false R104.htm 99941001 - Disclosure - Income tax expense - Summary of income tax expense (Detail) Sheet http://www.turkcell.com/role/DisclosureIncomeTaxExpenseSummaryOfIncomeTaxExpenseDetail Income tax expense - Summary of income tax expense (Detail) Details 104 false false R105.htm 99941002 - Disclosure - Income tax expense - Summary of reconciliation of effective income tax expense (Detail) Sheet http://www.turkcell.com/role/DisclosureIncomeTaxExpenseSummaryOfReconciliationOfEffectiveIncomeTaxExpenseDetail Income tax expense - Summary of reconciliation of effective income tax expense (Detail) Details 105 false false R106.htm 99941003 - Disclosure - Income tax expense - Additional information (Detail) Sheet http://www.turkcell.com/role/DisclosureIncomeTaxExpenseAdditionalInformationDetail Income tax expense - Additional information (Detail) Details 106 false false R107.htm 99941101 - Disclosure - Expenses by nature - Summary of expenses by cost of sales (Detail) Sheet http://www.turkcell.com/role/DisclosureExpensesByNatureSummaryOfExpensesByCostOfSalesDetail Expenses by nature - Summary of expenses by cost of sales (Detail) Details 107 false false R108.htm 99941102 - Disclosure - Expenses by nature - Summary of expenses by nature selling and marketing expenses (Detail) Sheet http://www.turkcell.com/role/DisclosureExpensesByNatureSummaryOfExpensesByNatureSellingAndMarketingExpensesDetail Expenses by nature - Summary of expenses by nature selling and marketing expenses (Detail) Details 108 false false R109.htm 99941103 - Disclosure - Expenses by nature - Summary of expenses by nature administrative expenses (Detail) Sheet http://www.turkcell.com/role/DisclosureExpensesByNatureSummaryOfExpensesByNatureAdministrativeExpensesDetail Expenses by nature - Summary of expenses by nature administrative expenses (Detail) Details 109 false false R110.htm 99941104 - Disclosure - Expenses by nature - Summary of net impairment losses on financial and contract asset (Detail) Sheet http://www.turkcell.com/role/DisclosureExpensesByNatureSummaryOfNetImpairmentLossesOnFinancialAndContractAssetDetail Expenses by nature - Summary of net impairment losses on financial and contract asset (Detail) Details 110 false false R111.htm 99941201 - Disclosure - Property, plant and equipment - Summary of property, plant and equipment (Detail) Sheet http://www.turkcell.com/role/DisclosurePropertyPlantAndEquipmentSummaryOfPropertyPlantAndEquipmentDetail Property, plant and equipment - Summary of property, plant and equipment (Detail) Details 111 false false R112.htm 99941202 - Disclosure - Property, plant and equipment - Additional information (Detail) Sheet http://www.turkcell.com/role/DisclosurePropertyPlantAndEquipmentAdditionalInformationDetail Property, plant and equipment - Additional information (Detail) Details 112 false false R113.htm 99941301 - Disclosure - Intangible assets - Summary of intangible assets and goodwill (Detail) Sheet http://www.turkcell.com/role/DisclosureIntangibleAssetsSummaryOfIntangibleAssetsAndGoodwillDetail Intangible assets - Summary of intangible assets and goodwill (Detail) Details 113 false false R114.htm 99941302 - Disclosure - Intangible assets - Additional information (Detail) Sheet http://www.turkcell.com/role/DisclosureIntangibleAssetsAdditionalInformationDetail Intangible assets - Additional information (Detail) Details 114 false false R115.htm 99941501 - Disclosure - Investment properties - Summary of increase (decrease) in fair value (Detail) Sheet http://www.turkcell.com/role/DisclosureInvestmentPropertiesSummaryOfIncreaseDecreaseInFairValueDetail Investment properties - Summary of increase (decrease) in fair value (Detail) Details 115 false false R116.htm 99941502 - Disclosure - Investment properties - Additional information (Detail) Sheet http://www.turkcell.com/role/DisclosureInvestmentPropertiesAdditionalInformationDetail Investment properties - Additional information (Detail) Details 116 false false R117.htm 99941601 - Disclosure - Right-of-use assets - Summary of closing balances of right-of-use assets and depreciation and amortization expenses (Detail) Sheet http://www.turkcell.com/role/DisclosureRightOfUseAssetsSummaryOfClosingBalancesOfRightOfUseAssetsAndDepreciationAndAmortizationExpensesDetail Right-of-use assets - Summary of closing balances of right-of-use assets and depreciation and amortization expenses (Detail) Details 117 false false R118.htm 99941602 - Disclosure - Right-of-use assets - Additional information (Detail) Sheet http://www.turkcell.com/role/DisclosureRightOfUseAssetsAdditionalInformationDetail Right-of-use assets - Additional information (Detail) Details 118 false false R119.htm 99941701 - Disclosure - Other assets - Summary of other assets (Detail) Sheet http://www.turkcell.com/role/DisclosureOtherAssetsSummaryOfOtherAssetsDetail Other assets - Summary of other assets (Detail) Details 119 false false R120.htm 99941801 - Disclosure - Deferred tax assets and liabilities - Recognized deferred tax assets and liabilities (Details) Sheet http://www.turkcell.com/role/DisclosureDeferredTaxAssetsAndLiabilitiesRecognizedDeferredTaxAssetsAndLiabilitiesDetails Deferred tax assets and liabilities - Recognized deferred tax assets and liabilities (Details) Details 120 false false R121.htm 99941802 - Disclosure - Deferred tax assets and liabilities - Movement in temporary differences (Details) Sheet http://www.turkcell.com/role/DisclosureDeferredTaxAssetsAndLiabilitiesMovementInTemporaryDifferencesDetails Deferred tax assets and liabilities - Movement in temporary differences (Details) Details 121 false false R122.htm 99941803 - Disclosure - Deferred tax assets and liabilities - Unused tax loss (Details) Sheet http://www.turkcell.com/role/DisclosureDeferredTaxAssetsAndLiabilitiesUnusedTaxLossDetails Deferred tax assets and liabilities - Unused tax loss (Details) Details 122 false false R123.htm 99941804 - Disclosure - Deferred tax assets and liabilities - Additional information (Details) Sheet http://www.turkcell.com/role/DisclosureDeferredTaxAssetsAndLiabilitiesAdditionalInformationDetails Deferred tax assets and liabilities - Additional information (Details) Details 123 false false R124.htm 99941901 - Disclosure - Trade receivables (Details) Sheet http://www.turkcell.com/role/DisclosureTradeReceivablesDetails Trade receivables (Details) Details http://www.turkcell.com/role/DisclosureTradeReceivablesTables 124 false false R125.htm 99942001 - Disclosure - Receivables from financial services - Schedule of receivables from financial services (Detail) Sheet http://www.turkcell.com/role/DisclosureReceivablesFromFinancialServicesScheduleOfReceivablesFromFinancialServicesDetail Receivables from financial services - Schedule of receivables from financial services (Detail) Details 125 false false R126.htm 99942101 - Disclosure - Contract assets - Summary of contract assets (Detail) Sheet http://www.turkcell.com/role/DisclosureContractAssetsSummaryOfContractAssetsDetail Contract assets - Summary of contract assets (Detail) Details 126 false false R127.htm 99942201 - Disclosure - Inventories - Additional information (Detail) Sheet http://www.turkcell.com/role/DisclosureInventoriesAdditionalInformationDetail Inventories - Additional information (Detail) Details 127 false false R128.htm 99942301 - Disclosure - Cash and cash equivalents (Details) Sheet http://www.turkcell.com/role/DisclosureCashAndCashEquivalentsDetails Cash and cash equivalents (Details) Details http://www.turkcell.com/role/DisclosureCashAndCashEquivalentsTables 128 false false R129.htm 99942302 - Disclosure - Cash and cash equivalents - Statements of cash flow (Details) Sheet http://www.turkcell.com/role/DisclosureCashAndCashEquivalentsStatementsOfCashFlowDetails Cash and cash equivalents - Statements of cash flow (Details) Details 129 false false R130.htm 99942303 - Disclosure - Cash and cash equivalents - Additional information (Details) Sheet http://www.turkcell.com/role/DisclosureCashAndCashEquivalentsAdditionalInformationDetails Cash and cash equivalents - Additional information (Details) Details 130 false false R131.htm 99942401 - Disclosure - Financial assets (Details) Sheet http://www.turkcell.com/role/DisclosureFinancialAssetsDetails Financial assets (Details) Details http://www.turkcell.com/role/DisclosureFinancialAssetsTables 131 false false R132.htm 99942402 - Disclosure - Financial assets - Levels (Details) Sheet http://www.turkcell.com/role/DisclosureFinancialAssetsLevelsDetails Financial assets - Levels (Details) Details 132 false false R133.htm 99942403 - Disclosure - Financial assets - Movement of the financial assets (Details) Sheet http://www.turkcell.com/role/DisclosureFinancialAssetsMovementOfFinancialAssetsDetails Financial assets - Movement of the financial assets (Details) Details 133 false false R134.htm 99942404 - Disclosure - Financial assets - Nominal and fair value of financial assets (Details) Sheet http://www.turkcell.com/role/DisclosureFinancialAssetsNominalAndFairValueOfFinancialAssetsDetails Financial assets - Nominal and fair value of financial assets (Details) Details 134 false false R135.htm 99942405 - Disclosure - Financial assets - Gain losses on other comprehensive income (Details) Sheet http://www.turkcell.com/role/DisclosureFinancialAssetsGainLossesOnOtherComprehensiveIncomeDetails Financial assets - Gain losses on other comprehensive income (Details) Details 135 false false R136.htm 99942501 - Disclosure - Equity - Additional information (Detail) Sheet http://www.turkcell.com/role/DisclosureEquityAdditionalInformationDetail Equity - Additional information (Detail) Details 136 false false R137.htm 99942502 - Disclosure - Equity - Summary of shareholding percentages (Detail) Sheet http://www.turkcell.com/role/DisclosureEquitySummaryOfShareholdingPercentagesDetail Equity - Summary of shareholding percentages (Detail) Details 137 false false R138.htm 99942601 - Disclosure - Earnings per share - Basic and diluted earnings per share (Details) Sheet http://www.turkcell.com/role/DisclosureEarningsPerShareBasicAndDilutedEarningsPerShareDetails Earnings per share - Basic and diluted earnings per share (Details) Details 138 false false R139.htm 99942701 - Disclosure - Other non-current liabilities - Other non-current liability (Detail) Sheet http://www.turkcell.com/role/DisclosureOtherNonCurrentLiabilitiesOtherNonCurrentLiabilityDetail Other non-current liabilities - Other non-current liability (Detail) Details 139 false false R140.htm 99942702 - Disclosure - Other non-current liabilities - Additional information (Detail) Sheet http://www.turkcell.com/role/DisclosureOtherNonCurrentLiabilitiesAdditionalInformationDetail Other non-current liabilities - Additional information (Detail) Details 140 false false R141.htm 99942801 - Disclosure - Loans and borrowings - Summary of borrowings (Detail) Sheet http://www.turkcell.com/role/DisclosureLoansAndBorrowingsSummaryOfBorrowingsDetail Loans and borrowings - Summary of borrowings (Detail) Details 141 false false R142.htm 99942802 - Disclosure - Loans and borrowings - Additional information (Detail) Sheet http://www.turkcell.com/role/DisclosureLoansAndBorrowingsAdditionalInformationDetail Loans and borrowings - Additional information (Detail) Details 142 false false R143.htm 99942803 - Disclosure - Loans and borrowings - Summary of terms and conditions of outstanding loans (Detail) Sheet http://www.turkcell.com/role/DisclosureLoansAndBorrowingsSummaryOfTermsAndConditionsOfOutstandingLoansDetail Loans and borrowings - Summary of terms and conditions of outstanding loans (Detail) Details 143 false false R144.htm 99942901 - Disclosure - Employee benefits - Summary of employee benefits provision (Detail) Sheet http://www.turkcell.com/role/DisclosureEmployeeBenefitsSummaryOfEmployeeBenefitsProvisionDetail Employee benefits - Summary of employee benefits provision (Detail) Details 144 false false R145.htm 99942902 - Disclosure - Employee benefits - Summary of movement in reserve for employee termination benefits (Detail) Sheet http://www.turkcell.com/role/DisclosureEmployeeBenefitsSummaryOfMovementInReserveForEmployeeTerminationBenefitsDetail Employee benefits - Summary of movement in reserve for employee termination benefits (Detail) Details 145 false false R146.htm 99942903 - Disclosure - Employee benefits - Summary of sensitivity of provision for employee termination benefits to changes in the significant actuarial assumptions (Detail) Sheet http://www.turkcell.com/role/DisclosureEmployeeBenefitsSummaryOfSensitivityOfProvisionForEmployeeTerminationBenefitsToChangesInSignificantActuarialAssumptionsDetail Employee benefits - Summary of sensitivity of provision for employee termination benefits to changes in the significant actuarial assumptions (Detail) Details 146 false false R147.htm 99942904 - Disclosure - Employee benefits - Additional information (Detail) Sheet http://www.turkcell.com/role/DisclosureEmployeeBenefitsAdditionalInformationDetail Employee benefits - Additional information (Detail) Details 147 false false R148.htm 99943001 - Disclosure - Deferred revenue - Additional information (Detail) Sheet http://www.turkcell.com/role/DisclosureDeferredRevenueAdditionalInformationDetail Deferred revenue - Additional information (Detail) Details 148 false false R149.htm 99943101 - Disclosure - Contract liabilities - Summary of current and non-current contract liabilities (Detail) Sheet http://www.turkcell.com/role/DisclosureContractLiabilitiesSummaryOfCurrentAndNonCurrentContractLiabilitiesDetail Contract liabilities - Summary of current and non-current contract liabilities (Detail) Details 149 false false R150.htm 99943102 - Disclosure - Contract liabilities - Summary of unsatisfied performance obligation of contract liabilities (Detail) Sheet http://www.turkcell.com/role/DisclosureContractLiabilitiesSummaryOfUnsatisfiedPerformanceObligationOfContractLiabilitiesDetail Contract liabilities - Summary of unsatisfied performance obligation of contract liabilities (Detail) Details 150 false false R151.htm 99943201 - Disclosure - Provisions - Summary of non-current provisions (Detail) Sheet http://www.turkcell.com/role/DisclosureProvisionsSummaryOfNonCurrentProvisionsDetail Provisions - Summary of non-current provisions (Detail) Details 151 false false R152.htm 99943202 - Disclosure - Provisions - Summary of current provisions (Detail) Sheet http://www.turkcell.com/role/DisclosureProvisionsSummaryOfCurrentProvisionsDetail Provisions - Summary of current provisions (Detail) Details 152 false false R153.htm 99943301 - Disclosure - Trade and other payables - Summary of trade and other payable (Detail) Sheet http://www.turkcell.com/role/DisclosureTradeAndOtherPayablesSummaryOfTradeAndOtherPayableDetail Trade and other payables - Summary of trade and other payable (Detail) Details 153 false false R154.htm 99943401 - Disclosure - Derivative financial instruments - Summary of fair value of derivative financial instruments (Detail) Sheet http://www.turkcell.com/role/DisclosureDerivativeFinancialInstrumentsSummaryOfFairValueOfDerivativeFinancialInstrumentsDetail Derivative financial instruments - Summary of fair value of derivative financial instruments (Detail) Details 154 false false R155.htm 99943402 - Disclosure - Derivative financial instruments - Summary of financial assets and financial liabilities measured and recognised at fair value (Detail) Sheet http://www.turkcell.com/role/DisclosureDerivativeFinancialInstrumentsSummaryOfFinancialAssetsAndFinancialLiabilitiesMeasuredAndRecognisedAtFairValueDetail Derivative financial instruments - Summary of financial assets and financial liabilities measured and recognised at fair value (Detail) Details 155 false false R156.htm 99943403 - Disclosure - Derivative financial instruments - Summary of fair value of financial assets and financial liabilities (Detail) Sheet http://www.turkcell.com/role/DisclosureDerivativeFinancialInstrumentsSummaryOfFairValueOfFinancialAssetsAndFinancialLiabilitiesDetail Derivative financial instruments - Summary of fair value of financial assets and financial liabilities (Detail) Details 156 false false R157.htm 99943404 - Disclosure - Derivative financial instruments - Cash flow sensitivity analysis for variable-rate instruments (Detail) Sheet http://www.turkcell.com/role/DisclosureDerivativeFinancialInstrumentsCashFlowSensitivityAnalysisForVariableRateInstrumentsDetail Derivative financial instruments - Cash flow sensitivity analysis for variable-rate instruments (Detail) Details 157 false false R158.htm 99943405 - Disclosure - Derivative financial instruments - Additional information (Detail) Sheet http://www.turkcell.com/role/DisclosureDerivativeFinancialInstrumentsAdditionalInformationDetail Derivative financial instruments - Additional information (Detail) Details 158 false false R159.htm 99943501 - Disclosure - Financial instruments - Disclosure of credit risk (Detail) Sheet http://www.turkcell.com/role/DisclosureFinancialInstrumentsDisclosureOfCreditRiskDetail Financial instruments - Disclosure of credit risk (Detail) Details 159 false false R160.htm 99943502 - Disclosure - Financial instruments - Summary of maximum exposure to credit risk for trade and subscriber receivables, other assets and cash and cash equivalent arising from sales transactions including those classified as due from related parties (Detail) Sheet http://www.turkcell.com/role/DisclosureFinancialInstrumentsSummaryOfMaximumExposureToCreditRiskForTradeAndSubscriberReceivablesOtherAssetsAndCashAndCashEquivalentArisingFromSalesTransactionsIncludingThoseClassifiedAsDueFromRelatedPartiesDetail Financial instruments - Summary of maximum exposure to credit risk for trade and subscriber receivables, other assets and cash and cash equivalent arising from sales transactions including those classified as due from related parties (Detail) Details 160 false false R161.htm 99943503 - Disclosure - Financial instruments - Summary of movements in provision for impairment of receivables from financial services, trade receivables and due from related parties (Detail) Sheet http://www.turkcell.com/role/DisclosureFinancialInstrumentsSummaryOfMovementsInProvisionForImpairmentOfReceivablesFromFinancialServicesTradeReceivablesAndDueFromRelatedPartiesDetail Financial instruments - Summary of movements in provision for impairment of receivables from financial services, trade receivables and due from related parties (Detail) Details 161 false false R162.htm 99943504 - Disclosure - Financial instruments - Summary of analysis of Group's financial liabilities into relevant maturity groupings based on contractual maturities (Detail) Sheet http://www.turkcell.com/role/DisclosureFinancialInstrumentsSummaryOfAnalysisOfGroupSFinancialLiabilitiesIntoRelevantMaturityGroupingsBasedOnContractualMaturitiesDetail Financial instruments - Summary of analysis of Group's financial liabilities into relevant maturity groupings based on contractual maturities (Detail) Details 162 false false R163.htm 99943505 - Disclosure - Financial instruments - Summary of Group's exposure to foreign currency risk based on notional amounts (Detail) Sheet http://www.turkcell.com/role/DisclosureFinancialInstrumentsSummaryOfGroupSExposureToForeignCurrencyRiskBasedOnNotionalAmountsDetail Financial instruments - Summary of Group's exposure to foreign currency risk based on notional amounts (Detail) Details 163 false false R164.htm 99943506 - Disclosure - Financial instruments - Summary of 10 percent strengthening/weakening of foreign exchange rate (Detail) Sheet http://www.turkcell.com/role/DisclosureFinancialInstrumentsSummaryOf10PercentStrengtheningWeakeningOfForeignExchangeRateDetail Financial instruments - Summary of 10 percent strengthening/weakening of foreign exchange rate (Detail) Details 164 false false R165.htm 99943507 - Disclosure - Financial instruments - Summary of interest-bearing financial instruments (Detail) Sheet http://www.turkcell.com/role/DisclosureFinancialInstrumentsSummaryOfInterestBearingFinancialInstrumentsDetail Financial instruments - Summary of interest-bearing financial instruments (Detail) Details 165 false false R166.htm 99943508 - Disclosure - Financial instruments - Summary of cash flow sensitivity analysis for variable rate instruments (Detail) Sheet http://www.turkcell.com/role/DisclosureFinancialInstrumentsSummaryOfCashFlowSensitivityAnalysisForVariableRateInstrumentsDetail Financial instruments - Summary of cash flow sensitivity analysis for variable rate instruments (Detail) Details 166 false false R167.htm 99943509 - Disclosure - Financial instruments - Detailed information about carrying and fair value of borrowings (Detail) Sheet http://www.turkcell.com/role/DisclosureFinancialInstrumentsDetailedInformationAboutCarryingAndFairValueOfBorrowingsDetail Financial instruments - Detailed information about carrying and fair value of borrowings (Detail) Details 167 false false R168.htm 99943601 - Disclosure - Guarantees and purchase obligations - Additional information (Detail) Sheet http://www.turkcell.com/role/DisclosureGuaranteesAndPurchaseObligationsAdditionalInformationDetail Guarantees and purchase obligations - Additional information (Detail) Details 168 false false R169.htm 99943701 - Disclosure - Commitments and Contingencies - Dispute on special communication tax (Detail) Sheet http://www.turkcell.com/role/DisclosureCommitmentsAndContingenciesDisputeOnSpecialCommunicationTaxDetail Commitments and Contingencies - Dispute on special communication tax (Detail) Details 169 false false R170.htm 99943702 - Disclosure - Commitments and Contingencies - Disputes regarding the law on the protection of competition - Additional information (Detail) Sheet http://www.turkcell.com/role/DisclosureCommitmentsAndContingenciesDisputesRegardingLawOnProtectionOfCompetitionAdditionalInformationDetail Commitments and Contingencies - Disputes regarding the law on the protection of competition - Additional information (Detail) Details 170 false false R171.htm 99943703 - Disclosure - Commitments and Contingencies - ICTA investigation regarding the R&D obligations - Additional information (Detail) Sheet http://www.turkcell.com/role/DisclosureCommitmentsAndContingenciesIctaInvestigationRegardingRDObligationsAdditionalInformationDetail Commitments and Contingencies - ICTA investigation regarding the R&D obligations - Additional information (Detail) Details 171 false false R172.htm 99943704 - Disclosure - Commitments and Contingencies - Refund Investigation (Detail) Sheet http://www.turkcell.com/role/DisclosureCommitmentsAndContingenciesRefundInvestigationDetail Commitments and Contingencies - Refund Investigation (Detail) Details 172 false false R173.htm 99943705 - Disclosure - Commitments and Contingencies - Other ongoing lawsuits and tax investigations (Detail) Sheet http://www.turkcell.com/role/DisclosureCommitmentsAndContingenciesOtherOngoingLawsuitsAndTaxInvestigationsDetail Commitments and Contingencies - Other ongoing lawsuits and tax investigations (Detail) Details 173 false false R174.htm 99943801 - Disclosure - Related parties - Receivables from related party (Detail) Sheet http://www.turkcell.com/role/DisclosureRelatedPartiesReceivablesFromRelatedPartyDetail Related parties - Receivables from related party (Detail) Details 174 false false R175.htm 99943802 - Disclosure - Related parties - Due from receivables from financial services (Detail) Sheet http://www.turkcell.com/role/DisclosureRelatedPartiesDueFromReceivablesFromFinancialServicesDetail Related parties - Due from receivables from financial services (Detail) Details 175 false false R176.htm 99943803 - Disclosure - Related parties - Payables to related party (Detail) Sheet http://www.turkcell.com/role/DisclosureRelatedPartiesPayablesToRelatedPartyDetail Related parties - Payables to related party (Detail) Details 176 false false R177.htm 99943804 - Disclosure - Related parties - Summary of total compensation provided to key management personnel (Detail) Sheet http://www.turkcell.com/role/DisclosureRelatedPartiesSummaryOfTotalCompensationProvidedToKeyManagementPersonnelDetail Related parties - Summary of total compensation provided to key management personnel (Detail) Details 177 false false R178.htm 99943805 - Disclosure - Related parties - Schedule of transactions with related parties (Detail) Sheet http://www.turkcell.com/role/DisclosureRelatedPartiesScheduleOfTransactionsWithRelatedPartiesDetail Related parties - Schedule of transactions with related parties (Detail) Details 178 false false R179.htm 99943806 - Disclosure - Related parties - Summary of financial assets and liabilities with related parties (Detail) Sheet http://www.turkcell.com/role/DisclosureRelatedPartiesSummaryOfFinancialAssetsAndLiabilitiesWithRelatedPartiesDetail Related parties - Summary of financial assets and liabilities with related parties (Detail) Details 179 false false R180.htm 99943807 - Disclosure - Related parties - Summary of time deposits at related parties (Detail) Sheet http://www.turkcell.com/role/DisclosureRelatedPartiesSummaryOfTimeDepositsAtRelatedPartiesDetail Related parties - Summary of time deposits at related parties (Detail) Details 180 false false R181.htm 99943808 - Disclosure - Related parties - Summary of time deposits, bank borrowings, debt securities issued, lease liabilities at related parties (Detail) Sheet http://www.turkcell.com/role/DisclosureRelatedPartiesSummaryOfTimeDepositsBankBorrowingsDebtSecuritiesIssuedLeaseLiabilitiesAtRelatedPartiesDetail Related parties - Summary of time deposits, bank borrowings, debt securities issued, lease liabilities at related parties (Detail) Details 181 false false R182.htm 99943809 - Disclosure - Related parties - Summary of interest income from related parties and interest expense to related parties (Detail) Sheet http://www.turkcell.com/role/DisclosureRelatedPartiesSummaryOfInterestIncomeFromRelatedPartiesAndInterestExpenseToRelatedPartiesDetail Related parties - Summary of interest income from related parties and interest expense to related parties (Detail) Details 182 false false R183.htm 99943901 - Disclosure - Subsidiaries - Schedule of subsidiaries and associates (Detail) Sheet http://www.turkcell.com/role/DisclosureSubsidiariesScheduleOfSubsidiariesAndAssociatesDetail Subsidiaries - Schedule of subsidiaries and associates (Detail) Details 183 false false R184.htm 99944001 - Disclosure - Investments accounted for using the equity method - Carrying value of associates (Details) Sheet http://www.turkcell.com/role/DisclosureInvestmentsAccountedForUsingEquityMethodCarryingValueOfAssociatesDetails Investments accounted for using the equity method - Carrying value of associates (Details) Details 184 false false R185.htm 99944002 - Disclosure - Investments accounted for using the equity method - Reconciliation (Details) Sheet http://www.turkcell.com/role/DisclosureInvestmentsAccountedForUsingEquityMethodReconciliationDetails Investments accounted for using the equity method - Reconciliation (Details) Details 185 false false R186.htm 99944101 - Disclosure - Cash flow information - Reconciliation of net cash flow to movement in net debt (Detail) Sheet http://www.turkcell.com/role/DisclosureCashFlowInformationReconciliationOfNetCashFlowToMovementInNetDebtDetail Cash flow information - Reconciliation of net cash flow to movement in net debt (Detail) Details 186 false false R187.htm 99944201 - Disclosure - Subsequent events (Details) Sheet http://www.turkcell.com/role/DisclosureSubsequentEventsDetails Subsequent events (Details) Details http://www.turkcell.com/role/DisclosureSubsequentEvents 187 false false All Reports Book All Reports tkc-20251231.xsd tkc-20251231_cal.xml tkc-20251231_def.xml tkc-20251231_lab.xml tkc-20251231_pre.xml tkc-20251231x20f.htm tkc-20251231x20f007.jpg http://xbrl.sec.gov/cyd/2025 http://xbrl.sec.gov/dei/2025 http://xbrl.sec.gov/ecd/2025 https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full true true