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Investment Properties - Additional Information (Detail) - TRY (₺)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Disclosure of detailed information about investment property [abstract]      
Rental income ₺ 3,092,000 ₺ 2,821,000 ₺ 2,317,000
Direct operating expense from investment property ₺ 0 ₺ 22,000 ₺ 22,000