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Financial Instruments - Summary of Consideration Payable in Relation to Acquisition (Detail) - Consideration payable in relation to acquisition of Belarusian telecom [member] - TRY (₺) ₺ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of detailed information about financial instruments [line items]
Opening balance	₺ 295,062	₺ 235,281
Gains recognized in profit or loss	28,629	59,781
Closing balance	₺ 323,691	₺ 295,062

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- Definition

The amount of exposure to loss resulting from credit risk. [Refer: Credit risk [member]]

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