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v3.19.1

Subsequent Events - Additional Information (Detail) - TRY (₺) |  | 12 Months Ended
--- | --- | ---
Jan. 02, 2019 | Dec. 31, 2018 | Dec. 31, 2016
Disclosure of non-adjusting events after reporting period [line items] |  |  |
Repurchase of treasury shares |  | 8,434,204 |
Shares repurchased, total cost |  | ₺ 94,620,000 | ₺ 65,607,000
Percentage of consolidated revenue |  | 7.25% |
Major ordinary share transactions [member] |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |
Repurchase of treasury shares | 827,750 |  |
Shares repurchased, total cost | ₺ 9,997,000 |  |
Inteltek [member] |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |
Percentage Ownership By Affiliates |  | 55.00% |
Percentage of consolidated revenue |  | 1.00% |
Bottom of range [member] |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |
Shares repurchased, price per share |  | ₺ 10.01 |
Bottom of range [member] | Major ordinary share transactions [member] |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |
Shares repurchased, price per share | 11.89 |  |
Top of range [member] |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |
Shares repurchased, price per share |  | ₺ 12.33 |
Top of range [member] | Major ordinary share transactions [member] |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |
Shares repurchased, price per share | ₺ 12.24 |  |

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