v3.26.1
RISK MANAGEMENT (Details 10) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Trading Banking Portfolios Scenario 1 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ (66,295) R$ (60,070)
Trading Banking Portfolios Scenario 2 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors (7,286,878) (7,221,066)
Trading Banking Portfolios Scenario 3 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ (13,845,070) (13,738,128)
Sensitivity Analysis Trading And Banking 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 And Banking Portfolio Interest Rate In Reais [Member] | Trading Banking Portfolios Scenario 1 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ (10,533) (10,217)
Sensitivity Analysis Trading And Banking Portfolio Interest Rate In Reais [Member] | Trading Banking Portfolios Scenario 2 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors (3,584,634) (4,085,285)
Sensitivity Analysis Trading And Banking Portfolio Interest Rate In Reais [Member] | Trading Banking Portfolios Scenario 3 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ (7,069,069) (7,975,990)
Sensitivity Analysis Trading And Banking Portfolio Price Indexes [Member]    
IfrsStatementLineItems [Line Items]    
Definition Exposure subject to variations in price index coupon rates  
Sensitivity Analysis Trading And Banking Portfolio Price Indexes [Member] | Trading Banking Portfolios Scenario 1 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ (17,802) (12,890)
Sensitivity Analysis Trading And Banking Portfolio Price Indexes [Member] | Trading Banking Portfolios Scenario 2 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors (2,747,631) (2,209,541)
Sensitivity Analysis Trading And Banking Portfolio Price Indexes [Member] | Trading Banking Portfolios Scenario 3 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ (4,869,645) (3,908,207)
Sensitivity Analysis Trading And Banking Portfolio Exchange Coupon [Member]    
IfrsStatementLineItems [Line Items]    
Definition Exposure subject to variations in foreign currency coupon rates  
Sensitivity Analysis Trading And Banking Portfolio Exchange Coupon [Member] | Trading Banking Portfolios Scenario 1 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ (1,899) (1,834)
Sensitivity Analysis Trading And Banking Portfolio Exchange Coupon [Member] | Trading Banking Portfolios Scenario 2 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors (231,410) (262,983)
Sensitivity Analysis Trading And Banking Portfolio Exchange Coupon [Member] | Trading Banking Portfolios Scenario 3 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ (447,013) (507,774)
Sensitivity Analysis Trading And Banking Portfolio Foreign Currency [Member]    
IfrsStatementLineItems [Line Items]    
Definition Exposure subject to exchange rate variations  
Sensitivity Analysis Trading And Banking Portfolio Foreign Currency [Member] | Trading Banking Portfolios Scenario 1 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ (4,244) (5,335)
Sensitivity Analysis Trading And Banking Portfolio Foreign Currency [Member] | Trading Banking Portfolios Scenario 2 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors (106,104) (133,384)
Sensitivity Analysis Trading And Banking Portfolio Foreign Currency [Member] | Trading Banking Portfolios Scenario 3 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ (212,207) (266,768)
Sensitivity Analysis Trading And Banking Portfolio Equities [Member]    
IfrsStatementLineItems [Line Items]    
Definition Exposure subject to variation in stock prices  
Sensitivity Analysis Trading And Banking Portfolio Equities [Member] | Trading Banking Portfolios Scenario 1 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ (35,194) (32,045)
Sensitivity Analysis Trading And Banking Portfolio Equities [Member] | Trading Banking Portfolios Scenario 2 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors (879,844) (801,129)
Sensitivity Analysis Trading And Banking Portfolio Equities [Member] | Trading Banking Portfolios Scenario 3 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ (1,759,689) (1,602,258)
Sensitivity Analysis Trading And Banking 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 And Banking Portfolio Sovereign Eurobonds And Treasuries [Member] | Trading Banking Portfolios Scenario 1 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ 2,442 2,296
Sensitivity Analysis Trading And Banking Portfolio Sovereign Eurobonds And Treasuries [Member] | Trading Banking Portfolios Scenario 2 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors 239,377 272,371
Sensitivity Analysis Trading And Banking Portfolio Sovereign Eurobonds And Treasuries [Member] | Trading Banking Portfolios Scenario 3 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ 465,818 525,099
Sensitivity Analysis Trading And Banking Portfolio Others [Member]    
IfrsStatementLineItems [Line Items]    
Definition Exposure not classified in other definitions  
Sensitivity Analysis Trading And Banking Portfolio Others [Member] | Trading Banking Portfolios Scenario 1 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ 935 (45)
Sensitivity Analysis Trading And Banking Portfolio Others [Member] | Trading Banking Portfolios Scenario 2 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors 23,368 (1,115)
Sensitivity Analysis Trading And Banking Portfolio Others [Member] | Trading Banking Portfolios Scenario 3 [Member]    
IfrsStatementLineItems [Line Items]    
Total excluding correlation of risk factors R$ 46,735 R$ (2,230)