Other disclosures (Details 3) - BRL (R$) R$ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Asset [Member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Cash and reserves at the Central Bank of Brazil | R$ 14,780,432 | R$ 22,500,450 |
| Financial assets/liabilities measured at fair value through profit or loss held for trading | 9,671,662 | 14,413,853 |
| Financial assets/liabilities measured at amortized cost | 93,642,915 | 105,973,276 |
| Total | 118,095,009 | 142,887,579 |
| Liabilities [Member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Cash and reserves at the Central Bank of Brazil | ||
| Financial assets/liabilities measured at fair value through profit or loss held for trading | 7,981,591 | 12,658,267 |
| Financial assets/liabilities measured at amortized cost | 157,559,409 | 174,910,624 |
| Total | R$ 165,541,000 | R$ 187,568,891 |