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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
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Major components of tax expense (income) [abstract]      
Foreign currency translation differences ₺ (7,293,767) ₺ 4,129,565 ₺ (1,080,920)
Change in cash flow hedge reserve (514,553) 2,271,364 3,301,693
Change in cost of hedging reserve 1,511,265 (562,159) (3,133,985)
Fair value reserve 100,930 215,993 (176,141)
Hedges of net investments in foreign operations 1,632,047 (3,382,331) (752,112)
Remeasurements of defined benefit plan (176,940) (216,218) (2,634,730)
Total, Before tax (4,741,018) 2,456,214 (4,476,195)
Foreign currency translation differences   (708,985) (1,280,907)
Change in cash flow hedge reserve 122,397 36,819 (129,706)
Change in cost of hedging reserve (377,816) 395,647 626,797
Fair value reserve (25,233) (7,961) 51,959
Hedges of net investments in foreign operations (408,012) 1,705,773 635,461
Remeasurements of defined benefit plan 44,177 219,713 525,362
Total, Tax (expense)/benefit (644,487) 1,641,006 428,966
Foreign currency translation differences (7,293,767) 3,420,580 (2,361,827)
Change in cash flow hedge reserve (392,156) 2,308,183 3,171,987
Change in cost of hedging reserve 1,133,449 (166,512) (2,507,188)
Fair value reserve 75,697 208,032 (124,182)
Hedges of net investments in foreign operations 1,224,035 (1,676,558) (116,651)
Remeasurements of defined benefit plan (132,763) 3,495 (2,109,368)
Other comprehensive income/(loss) for the year, net of income tax ₺ (5,385,505) ₺ 4,097,220 ₺ (4,047,229)