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Derivative Financial Instruments - Summary of Fair Value of Derivative Financial Instruments (Detail) - TRY (₺)
₺ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Derivative financial instruments [abstract]    
Derivative financial assets, Held for trading ₺ 709,617 ₺ 961,665
Derivative financial assets, Derivatives used for hedging 730,924 0
Derivative financial assets 1,440,541 961,665
Derivative financial liabilities, Held for trading 131,097 17,724
Derivative financial liabilities, Derivatives used for hedging 0 0
Derivative financial liabilities ₺ 131,097 ₺ 17,724