DEBT INSTRUMENTS AT AMORTIZED COST (Details) - BRL (R$) R$ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| IfrsStatementLineItems [Line Items] | ||
| Brazilian government securities | R$ 129,684,983 | R$ 139,751,396 |
| Corporate debt securities | 121,523,103 | 121,344,702 |
| Securities at amortized cost | 251,208,086 | 261,096,098 |
| At cost [member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Brazilian government securities | 135,339,275 | 145,278,232 |
| Corporate debt securities | 124,207,296 | 121,713,735 |
| Securities at amortized cost | 259,546,571 | 266,991,967 |
| Gross Unrealized Gains [Member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Brazilian government securities | 505,190 | 3,032,908 |
| Corporate debt securities | 1,842,639 | 23,020 |
| Securities at amortized cost | 2,347,829 | 3,055,928 |
| Gross Unrealized Losses [Member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Brazilian government securities | (6,159,482) | (8,559,744) |
| Corporate debt securities | (4,526,832) | (392,053) |
| Securities at amortized cost | R$ (10,686,314) | R$ (8,951,797) |