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Commitments and Contingencies - Dispute to Special Communication Tax - Additional Information (Detail) - Dispute on Special Communication Tax [member] - TRY (₺)
₺ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Disclosure of commitments and contingencies [Line Items]    
Additional special communication tax and tax penalty on claim ₺ 527,639  
Additional special communication tax on claim 211,056  
Tax penalty on claim 316,583  
The assessment of the SCT for the year 2011 80,355  
The restructuring amount of penalties and interest on the SCT   ₺ 117,058
Accrued provisions of restructuring the SCT ₺ 24,175 ₺ 14,866