Tax assets and liabilities (Details 5) - BRL (R$) R$ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|---|---|---|---|
| Balances At [Member] | |||
| IfrsStatementLineItems [Line Items] | |||
| Deferred Tax Assets | R$ 50,854,830 | R$ 48,223,877 | R$ 43,445,704 |
| Temporary differences | 45,562,986 | 42,737,528 | 37,877,300 |
| Tax loss | 5,291,844 | 5,486,349 | 5,561,066 |
| Deferred Tax Liabilities | 4,589,099 | 5,689,440 | 3,699,432 |
| Temporary differences | 4,589,099 | 5,689,440 | 3,699,432 |
| Total | 46,265,731 | 42,534,437 | 39,746,272 |
| CSLL 18% | R$ 7,338 | ||
| Adjustment To Income [Member] | |||
| IfrsStatementLineItems [Line Items] | |||
| Deferred Tax Assets | 3,110,827 | 3,124,515 | |
| Temporary differences | 3,305,332 | 3,206,570 | |
| Tax loss | (194,505) | (74,717) | |
| Deferred Tax Liabilities | (1,194,298) | 2,238,539 | |
| Temporary differences | (1,194,298) | 2,238,539 | |
| Total | 4,305,125 | 885,976 | |
| CSLL 18% | (7,338) | ||
| Fair Value Adjustments [Member] | |||
| IfrsStatementLineItems [Line Items] | |||
| Deferred Tax Assets | (573,469) | 2,460,496 | |
| Temporary differences | (573,469) | 2,460,496 | |
| Deferred Tax Liabilities | 247,771 | 597,555 | |
| Temporary differences | 247,771 | 597,555 | |
| Total | (821,240) | 1,862,941 | |
| Other [Member] | |||
| IfrsStatementLineItems [Line Items] | |||
| Deferred Tax Assets | 93,595 | (806,838) | |
| Temporary differences | 93,595 | (806,838) | |
| Deferred Tax Liabilities | (153,814) | (846,086) | |
| Temporary differences | (153,814) | (846,086) | |
| Total | R$ 247,409 | R$ 39,248 |