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Trade Receivables and Accrued Income - Additional Information (Detail) - TRY (₺) ₺ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Trade Receivables And Accrued Income [line items] |  |
Letters of guarantee received | ₺ 174,975 | ₺ 339,543
Trade receivables [member] |  |
Trade Receivables And Accrued Income [line items] |  |
Allowance for doubtful debts related to outstanding balances | 738,181 | ₺ 705,213
Contracted receivables [member] |  |
Trade Receivables And Accrued Income [line items] |  |
Non-current undue assigned contracted receivables | ₺ 115,001 |

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- Definition The amount of an allowance account used to record impairments to financial assets due to credit losses. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2021-01-01 -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 16 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-02&anchor=para_16&doctype=Standard&book=b -URIDate 2018-03-16 + Details
Name: | ifrs-full_AllowanceAccountForCreditLossesOfFinancialAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The amount of non-current receivables from contracts with customers. [Refer: Receivables from contracts with customers] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2018-01-01 -Paragraph 105 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=15&date=2018-03-01&anchor=para_105&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_NoncurrentReceivablesFromContractsWithCustomers
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The amount of letters of guarantee received with respect to the accounts and checks receivable. + References No definition available. + Details
Name: | tkc_LettersOfGuaranteeReceived
Namespace Prefix: | tkc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Trade receivables and accrued income [line items] + References No definition available. + Details
Name: | tkc_TradeReceivablesAndAccruedIncomeLineItems
Namespace Prefix: | tkc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=ifrs-full_TradeReceivablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=tkc_ContractedReceivablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |