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Derivative financial instruments - Summary of Reconciliation by Risk Category of Components of Equity and Analysis of OCI Items, Net of (Detail) - Cash flow hedges [member] | 12 Months Ended
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Dec. 31, 2018 TRY (₺)
Cost of hedging reserve [member] |
Cash flow hedges [line items] |
Beginning balance | ₺ (271,130)
Changes in fair value: | (448,833)
Foreign currency risk | (448,833)
Amount reclassified into profit or loss: | 101,231
Foreign currency risk | 101,231
Tax on movements during the year: | 76,472
Ending balance | (271,130)
Hedging reserve [member] |
Cash flow hedges [line items] |
Beginning balance | 14,942
Changes in fair value: | 683,706
Foreign currency risk | 612,733
Interest rate risk | 70,973
Amount reclassified into profit or loss: | (664,550)
Foreign currency risk | (611,035)
Interest rate risk | (53,515)
Tax on movements during the year: | (4,214)
Ending balance | ₺ 14,942

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- Definition Amount reclassified into profit or loss based on foreign currency risk. + References No definition available. + Details
Name: | tkc_AmountReclassifiedIntoProfitOrLossBasedOnForeignCurrencyRisk
Namespace Prefix: | tkc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Amount reclassified into profit or loss based on interest rate risk. + References No definition available. + Details
Name: | tkc_AmountReclassifiedIntoProfitOrLossBasedOnInterestRateRisk
Namespace Prefix: | tkc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Cash flow hedges, amount reclassified into profit or loss. + References No definition available. + Details
Name: | tkc_CashFlowHedgesAmountReclassifiedIntoProfitOrLoss
Namespace Prefix: | tkc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Cash flow hedges, changes in fair value. + References No definition available. + Details
Name: | tkc_CashFlowHedgesChangesInFairValue
Namespace Prefix: | tkc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Cash flow hedges. + References No definition available. + Details
Name: | tkc_CashFlowHedgesLineItems
Namespace Prefix: | tkc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Cash flow hedges, tax on movements. + References No definition available. + Details
Name: | tkc_CashFlowHedgesTaxOnMovements
Namespace Prefix: | tkc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Changes in fair value based on foreign currency risk. + References No definition available. + Details
Name: | tkc_ChangesInFairValueBasedOnForeignCurrencyRisk
Namespace Prefix: | tkc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Changes in fair value based on interest rate risk. + References No definition available. + Details
Name: | tkc_ChangesInFairValueBasedOnInterestRateRisk
Namespace Prefix: | tkc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Cost of hedging reserve + References No definition available. + Details
Name: | tkc_CostOfHedgingReserve
Namespace Prefix: | tkc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Hedging reserve + References No definition available. + Details
Name: | tkc_HedgingReserve
Namespace Prefix: | tkc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_TypesOfHedgesAxis=ifrs-full_CashFlowHedgesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ComponentsOfEquityAxis=tkc_HedgingReserveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |