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Financial Instruments - Summary of Fair Value of Financial Assets and Financial Liabilities (Detail) - TRY (₺) ₺ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016
Participating cross currency swap contracts [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Fair values | ₺ 950,862 | ₺ 382,054
Level 2 [member] | Currency swap contracts [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Fair values | ₺ (4,675) | 611
Valuation Techniques | Present value of the estimated future cash flows based on observable yield curves and end period FX rates |
Level 2 [member] | Currency Forward Contracts [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Fair values | ₺ (2,246) | (1,286)
Valuation Techniques | Forward exchange rates at the balance sheet date |
Level 3 [member] | Participating cross currency swap contracts [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Fair values | ₺ 950,862 | ₺ 382,054
Valuation Techniques | Present value of the estimated future cash flows based on unobservable yield curves and end period FX rates |

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