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Financial Instruments - Summary of Quantitative Information about Significant Unobservable Inputs Used in Level 3 Fair Value Measurement of Contingent Consideration (Detail) - Level 3 [member] - TRY (₺) ₺ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Disclosure of fair value of contingent consideration [line items] |  |
Increase in fair value of change in discount rate by 100 bps | ₺ (13,582) |
Decrease in fair value of change in discount rate by 100 bps | 14,250 |
Increase in fair value of change in expected settlement date changes by 1 year | (31,047) |
Decrease in fair value of change in expected settlement date changes by 1 year | 33,896 |
Contingent consideration | ₺ 358,304 | ₺ 323,691
Fair value measurement of contingent consideration percentage | 9.50% | 4.80%
Relationship of unobservable inputs to fair value | A change in the discount rate by 100 bps would increase/decrease FV by TL (13,582) and TL 14,250 respectively, If expected settlement date changes by 1 year FV would increase/decrease by TL (31,047) and TL 33,896 respectively, |

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- Definition The present value of the long-term contingent payment to the seller. + References No definition available. + Details
Name: | tkc_ContingentConsideration
Namespace Prefix: | tkc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Decrease in fair value of change in expected settlement date changes by one year of Contingent consideration + References No definition available. + Details
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Namespace Prefix: | tkc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Disclosure of fair value of contingent consideration [line items] + References No definition available. + Details
Name: | tkc_DisclosureOfFairValueOfContingentConsiderationLineItems
Namespace Prefix: | tkc_
Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition Dncrease in fair value of change in discount rate of Contingent consideration + References No definition available. + Details
Name: | tkc_DncreaseInFairValueOfChangeInDiscountRateOfContingentConsideration
Namespace Prefix: | tkc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition fair value measurement of contingent consideration, percentage. + References No definition available. + Details
Name: | tkc_FairValueMeasurementOfContingentConsiderationPercentage
Namespace Prefix: | tkc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Increase in fair value of change in discount rate of Contingent consideration + References No definition available. + Details
Name: | tkc_IncreaseInFairValueOfChangeInDiscountRateOfContingentConsideration
Namespace Prefix: | tkc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Increase in fair value of change in expected settlement date changes by one year of Contingent consideration + References No definition available. + Details
Name: | tkc_IncreaseInFairValueOfChangeInExpectedSettlementDateChangesByOneYearOfContingentConsideration
Namespace Prefix: | tkc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Relationship of unobservable inputs to fair value, contingent consideration. + References No definition available. + Details
Name: | tkc_RelationshipOfUnobservableInputsToFairValueContingentConsideration
Namespace Prefix: | tkc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | ifrs-full_LevelsOfFairValueHierarchyAxis=ifrs-full_Level3OfFairValueHierarchyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |