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Income Tax Expense - Summary of Income Tax Relating to Each Component of Other Comprehensive Income (Detail) - TRY (₺) ₺ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Major components of tax expense (income) [abstract] |  |  |
Foreign currency translation differences | ₺ 850,188 | ₺ 100,149 | ₺ 218,472
Change in cash flow hedge reserve | 19,156 |  |
Change in cost of hedging reserve | (347,602) |  |
Remeasurements of employee termination benefits | 12,699 | (3,738) | (34,532)
Total, Before tax | 534,441 | 96,411 | 183,940
Foreign currency translation differences | (226,667) | (107,299) | (87,381)
Change in cash flow hedge reserve | (4,214) |  |
Change in cost of hedging reserve | 76,472 |  |
Remeasurements of employee termination benefits | (2,794) | 748 | 7,066
Total, Tax (expense)/benefit | (157,203) | (106,551) | (80,315)
Foreign currency translation differences | 623,521 | (7,150) | 131,091
Change in cash flow hedge reserve | 14,942 |  |
Change in cost of hedging reserve | (271,130) |  |
Remeasurements of employee termination benefits | 9,905 | (2,990) | (27,466)
Other comprehensive income (loss) for the year, net of income tax | ₺ 377,238 | ₺ (10,140) | ₺ 103,625

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- Definition The amount of income tax relating to amounts recognised in other comprehensive income in relation to exchange differences on the translation of financial statements of foreign operations. [Refer: Other comprehensive income; Reserve of exchange differences on translation] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2018-01-01 -Paragraph 81 -Subparagraph ab -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2018-03-01&anchor=para_81_ab&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 90 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_90&doctype=Standard -URIDate 2018-03-16 + Details
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