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Employee Benefit Expenses - Summary OF Employee Benefit Expenses (Detail) - TRY (₺)
₺ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Disclosure Of Employee Benefit Expenses [Abstract]      
Wages and salaries ₺ 1,746,147 ₺ 1,450,262 ₺ 1,317,655
Employee termination benefits 32,862 32,977 30,593
Defined contribution plans 8,107 7,722 8,364
Employee benefit expenses ₺ 1,787,116 ₺ 1,490,961 ₺ 1,356,612