Derivative financial instruments - Summary of fair value of derivative financial instruments (Detail) - TRY (₺) ₺ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Derivative financial instrument | ||
| Derivative financial assets, Held for trading | ₺ 1,728,869 | ₺ 2,571,151 |
| Derivative financial assets, Net interest accrual income/ expense | 50,410 | 103,126 |
| Derivative financial assets | 1,779,279 | 2,674,277 |
| Derivative financial liabilities, Held for trading | (1,532,645) | (656,192) |
| Derivative financial liabilities, Net interest accrual income/ expense | 7,664 | |
| Derivative financial liabilities | ₺ (1,532,645) | ₺ (648,528) |