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Investment Properties - Summary of Increase (Decrease) in Fair Value (Detail) - TRY (₺)
₺ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Disclosure of detailed information about investment property [line items]    
Opening balance ₺ 46,270  
Closing balance 980 ₺ 46,270
Net book amount 980 46,270
Accumulated amortization [member]    
Disclosure of detailed information about investment property [line items]    
Opening balance (119,202) (114,895)
Transfer to property, plant and equipment 22,366  
Depreciation and impairment charges during the year (2,337) (3,530)
Disposal 215  
Other   (777)
Closing balance (98,958) (119,202)
Cost value [member]    
Disclosure of detailed information about investment property [line items]    
Opening balance 165,472 164,467
Transfer to property, plant and equipment (64,594)  
Addition   1,005
Disposal (940)  
Closing balance ₺ 99,938 ₺ 165,472