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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
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