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Commitments and Contingencies - Dispute to Treasury Share Amounts - Additional Information (Detail) - TRY (₺) |  | 12 Months Ended
--- | --- | ---
Apr. 27, 1998 | Dec. 31, 2017 | Dec. 31, 2016
Disclosure of commitments and contingencies [Line Items] |  |  |
Percentage of payment obligation on gross sales per month as treasury share | 13.50% |  |
Percentage of payment obligation on gross sales per month as universal services share | 1.50% |  |
Percentage of payment obligation on annual gross sales as authority contribution share | 0.35% |  |
Provision for litigation settlement amount |  | ₺ 417,668,000 | ₺ 0
Dispute On Treasury Share Amount [member] |  |  |
Disclosure of commitments and contingencies [Line Items] |  |  |
Litigation principal amount |  | 206,365,000 |
Litigation interest amount |  | 209,159,000 |
Litigation settlement amount |  | ₺ 436,300,000 |

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- Details
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