Securities sold under repurchase agreements and interbank and institutional market funds - Schedule of Interbank Market Debt (Details) - BRL (R$) R$ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Disclosure of financial liabilities [line items] | ||
| Interbank market funds | R$ 406,170 | R$ 372,294 |
| Current | 199,796 | 218,138 |
| Non-current | 206,374 | 154,156 |
| Financial bills | ||
| Disclosure of financial liabilities [line items] | ||
| Interbank market funds | 61,161 | 70,083 |
| Real estate credit bills | ||
| Disclosure of financial liabilities [line items] | ||
| Interbank market funds | 71,121 | 52,112 |
| Rural credit bills | ||
| Disclosure of financial liabilities [line items] | ||
| Interbank market funds | 64,644 | 49,744 |
| Guaranteed real estate bills | ||
| Disclosure of financial liabilities [line items] | ||
| Interbank market funds | 64,438 | 64,491 |
| Import and export financing | ||
| Disclosure of financial liabilities [line items] | ||
| Interbank market funds | 114,138 | 117,921 |
| Onlending domestic | ||
| Disclosure of financial liabilities [line items] | ||
| Interbank market funds | R$ 30,668 | R$ 17,943 |