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Financial Instruments - Summary of Cash Flow Sensitivity Analysis for Variable Rate Instruments (Detail) - Liquidity risk [member] - TRY (₺) ₺ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
Disclosure of detailed information about financial instruments [line items] |  |
100 bps increase in Profit or Loss | ₺ (83,922) | ₺ (55,776)
100 bps decrease in Profit or Loss | 83,922 | 55,776
100 bps increase in Equity | 0 | 0
100 bps decrease in Equity | 0 | 0
Variable Rate Instruments [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
100 bps increase in Profit or Loss | (83,922) | (55,776)
100 bps decrease in Profit or Loss | 83,922 | 55,776
100 bps increase in Equity | 0 | 0
100 bps decrease in Equity | ₺ 0 | ₺ 0

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