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Income Tax Expense - Summary of Reconciliation of Effective Income Tax Expense (Detail) - TRY (₺) ₺ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Reconciliation of accounting profit multiplied by applicable tax rates [abstract] |  |  |
Profit from continuing operations before income tax expense | ₺ 2,672,816 | ₺ 2,609,517 | ₺ 2,009,127
(Loss) from discontinued operations before income tax expense |  |  | (42,164)
Profit before income tax expense | 2,672,816 | 2,609,517 | 1,966,963
Tax at the Turkey's tax rate | (588,020) | (521,903) | (393,393)
Difference in overseas tax rates | 7,617 | 4,133 | (15,935)
Effect of exemptions | 198,160 | 73,916 | 104,244
Effect of amounts which are not deductible | (91,778) | (102,102) | (78,571)
Tax exemption from subsidiary sale | 24,268 |  |
Utilization of previously unrecognized tax losses |  |  | 1,253
Change in unrecognized deferred tax assets | (50,551) | (41,340) | (30,616)
Adjustments for current tax of prior years | 2,510 | 11,280 | (8,176)
Tax effect of investment in associate | 0 | 0 | 0
Other | 2,313 | 4,258 | (1,966)
Total income tax expense | ₺ (495,481) | ₺ (571,758) | ₺ (423,160)

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- Definition The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to expenses not deductible in determining taxable profit (tax loss). [Refer: Accounting profit] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2018-01-01 -Paragraph 81 -Subparagraph c -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2018-03-01&anchor=para_81_c_i&doctype=Standard -URIDate 2018-03-16 + Details
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