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Loans and borrowings - Summary of Terms and Conditions of Outstanding Loans (Parenthetical) (Detail) - Dec. 31, 2017 ₺ in Thousands, € in Thousands, $ in Thousands | TRY (₺) | USD ($) | EUR (€)
--- | --- | --- | ---
Foreign Currency Loans [member] | Lifecell LLC [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Deposit amount | ₺ 183,483 | $ 17,100 | € 26,350

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of blocked deposits held by the entity in connection with the loan utilized. + References No definition available. + Details
Name: | tkc_BlockedDeposits
Namespace Prefix: | tkc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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: | dei_LegalEntityAxis=tkc_LifecellLlcMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |