Interest and similar income and expenses and income of financial assets and liabilities at fair value through profit or loss - Narrative (Details) - BRL (R$) R$ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Disclosure of financial assets [line items] | ||
| Financial assets, expense recognized on expected losses | R$ 940 | R$ (2,891) |
| Financial assets at amortised cost, class | ||
| Disclosure of financial assets [line items] | ||
| Total loss, net of reversals | 1,162 | (2,801) |
| Financial assets at fair value through other comprehensive income | ||
| Disclosure of financial assets [line items] | ||
| Total loss, net of reversals | R$ (222) | R$ (90) |