v3.26.1
RISK MANAGEMENT (Details 9) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Trading Portfolio Scenario 1 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ (2,252) R$ (4,643)
Trading Portfolio Scenario 2 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors (193,590) (151,816)
Trading Portfolio Scenario 3 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ (372,198) (302,865)
Sensitivity Analysis Trading Portfolio Interest Rate In Reais [Member]    
IfrsStatementLineItems [Line Items]    
Definition Exposure subject to variations in fixed interest rates and interest rate coupons  
Sensitivity Analysis Trading Portfolio Interest Rate In Reais [Member] | Trading Portfolio Scenario 1 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ (318) (69)
Sensitivity Analysis Trading Portfolio Interest Rate In Reais [Member] | Trading Portfolio Scenario 2 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors (102,871) (24,757)
Sensitivity Analysis Trading Portfolio Interest Rate In Reais [Member] | Trading Portfolio Scenario 3 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ (195,792) (50,192)
Sensitivity Analysis Trading Portfolio Price Indexes [Member]    
IfrsStatementLineItems [Line Items]    
Definition Exposure subject to variations in price index coupon rates  
Sensitivity Analysis Trading Portfolio Price Indexes [Member] | Trading Portfolio Scenario 1 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ (294) (110)
Sensitivity Analysis Trading Portfolio Price Indexes [Member] | Trading Portfolio Scenario 2 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors (54,032) (9,118)
Sensitivity Analysis Trading Portfolio Price Indexes [Member] | Trading Portfolio Scenario 3 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ (102,722) (16,071)
Sensitivity Analysis Trading Portfolio Exchange Coupon [Member]    
IfrsStatementLineItems [Line Items]    
Definition Exposure subject to variations in foreign currency coupon rates  
Sensitivity Analysis Trading Portfolio Exchange Coupon [Member] | Trading Portfolio Scenario 1 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ (2) (5)
Sensitivity Analysis Trading Portfolio Exchange Coupon [Member] | Trading Portfolio Scenario 2 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors (347) (670)
Sensitivity Analysis Trading Portfolio Exchange Coupon [Member] | Trading Portfolio Scenario 3 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ (688) (1,330)
Sensitivity Analysis Trading Portfolio Foreign Currency [Member]    
IfrsStatementLineItems [Line Items]    
Definition Exposure subject to exchange rate variations  
Sensitivity Analysis Trading Portfolio Foreign Currency [Member] | Trading Portfolio Scenario 1 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ (2,184) (2,401)
Sensitivity Analysis Trading Portfolio Foreign Currency [Member] | Trading Portfolio Scenario 2 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors (54,595) (60,037)
Sensitivity Analysis Trading Portfolio Foreign Currency [Member] | Trading Portfolio Scenario 3 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ (109,190) (120,073)
Sensitivity Analysis Trading Portfolio Equities [Member]    
IfrsStatementLineItems [Line Items]    
Definition Exposure subject to variation in stock prices  
Sensitivity Analysis Trading Portfolio Equities [Member] | Trading Portfolio Scenario 1 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ 476 (1,971)
Sensitivity Analysis Trading Portfolio Equities [Member] | Trading Portfolio Scenario 2 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors 11,888 (49,268)
Sensitivity Analysis Trading Portfolio Equities [Member] | Trading Portfolio Scenario 3 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ 23,776 (98,536)
Sensitivity Analysis Trading Portfolio Sovereign Eurobonds And Treasuries [Member]    
IfrsStatementLineItems [Line Items]    
Definition Exposure subject to variations in the interest rate of securities traded on the international market  
Sensitivity Analysis Trading Portfolio Sovereign Eurobonds And Treasuries [Member] | Trading Portfolio Scenario 1 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ 83 (26)
Sensitivity Analysis Trading Portfolio Sovereign Eurobonds And Treasuries [Member] | Trading Portfolio Scenario 2 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors 6,687 (6,451)
Sensitivity Analysis Trading Portfolio Sovereign Eurobonds And Treasuries [Member] | Trading Portfolio Scenario 3 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ 13,058 (13,634)
Sensitivity Analysis Trading Portfolio Others [Member]    
IfrsStatementLineItems [Line Items]    
Definition Exposure not classified in other definitions  
Sensitivity Analysis Trading Portfolio Others [Member] | Trading Portfolio Scenario 1 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ (13) (61)
Sensitivity Analysis Trading Portfolio Others [Member] | Trading Portfolio Scenario 2 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors (320) (1,515)
Sensitivity Analysis Trading Portfolio Others [Member] | Trading Portfolio Scenario 3 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ (640) R$ (3,029)