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BONDS AND SECURITIES AT AMORTIZED COST (Details) - BRL (R$)
R$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Jan. 02, 2023
IfrsStatementLineItems [Line Items]      
Brazilian government securities R$ 139,751,396 R$ 53,635,938  
Corporate debt securities 121,344,702 121,732,123  
Balance on December 31, 2023 261,096,098 175,368,061  
IFRS 17 [member]      
IfrsStatementLineItems [Line Items]      
Amortized cost     R$ 36,639,102
At cost [member]      
IfrsStatementLineItems [Line Items]      
Brazilian government securities 145,278,232 54,282,125  
Corporate debt securities 121,713,735 120,924,952  
Balance on December 31, 2023 266,991,967 175,207,077  
Gross Unrealized Gains [Member]      
IfrsStatementLineItems [Line Items]      
Brazilian government securities 3,032,908 4,007,277  
Corporate debt securities 23,020 1,387,469  
Balance on December 31, 2023 3,055,928 5,394,746  
Gross Unrealized Losses [Member]      
IfrsStatementLineItems [Line Items]      
Brazilian government securities (8,559,744) (4,653,464)  
Corporate debt securities (392,053) (580,298)  
Balance on December 31, 2023 R$ (8,951,797) R$ (5,233,762)