Other Comprehensive Income (Details) - BRL (R$) R$ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|---|---|---|---|
| IfrsStatementLineItems [Line Items] | |||
| Government debt securities | R$ 69,354,220 | R$ 86,437,770 | R$ 58,841,921 |
| Private-sector debt securities | 5,621,137 | 194,216 | |
| Total | 69,354,220 | 92,058,907 | 59,036,137 |
| Revaluation Gains [Member] | |||
| IfrsStatementLineItems [Line Items] | |||
| Government debt securities | 2,376,664 | 825,610 | 2,533,250 |
| Private-sector debt securities | 2,043,223 | 10,864 | |
| Total | 2,376,664 | 2,868,833 | 2,544,114 |
| Revaluation Losses [Member] | |||
| IfrsStatementLineItems [Line Items] | |||
| Government debt securities | (1,250,469) | (4,604,296) | (1,437,728) |
| Private-sector debt securities | (404) | (429,081) | (568,948) |
| Total | (1,250,873) | (5,033,377) | (2,006,676) |
| Net Revaluation Gains Losses [Member] | |||
| IfrsStatementLineItems [Line Items] | |||
| Government debt securities | 1,126,195 | (3,778,686) | 1,095,522 |
| Private-sector debt securities | (404) | 1,614,142 | (558,084) |
| Total | R$ 1,125,791 | R$ (2,164,544) | R$ 537,438 |