v3.26.1
Risk and Capital Management - Schedule of Risk Weighted Assets (Details) - BRL (R$)
R$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Disclosure of risk management strategy related to hedge accounting [line items]    
Risk weighted assets R$ 1,505,475 R$ 1,379,056
Market Risk    
Disclosure of risk management strategy related to hedge accounting [line items]    
Risk weighted assets 50,248 43,189
Market Risk | Of which: standardized approach (RWAMPAD)    
Disclosure of risk management strategy related to hedge accounting [line items]    
Risk weighted assets 61,438 52,643
Market Risk | Of which: internal models approach (RWAMINT)    
Disclosure of risk management strategy related to hedge accounting [line items]    
Risk weighted assets 30,685 28,471
Operational Risk    
Disclosure of risk management strategy related to hedge accounting [line items]    
Risk weighted assets 143,006 112,827
Amounts below the thresholds for deduction    
Disclosure of risk management strategy related to hedge accounting [line items]    
Risk weighted assets 62,949 55,567
Counterparty credit risk (CCR) | Credit risk    
Disclosure of risk management strategy related to hedge accounting [line items]    
Risk weighted assets 1,199,103 1,108,011
Of which: standardized approach for credit risk | Credit risk    
Disclosure of risk management strategy related to hedge accounting [line items]    
Risk weighted assets 1,119,760 1,038,238
Of which: advanced internal rating-based approach (A-IRB) | Credit risk    
Disclosure of risk management strategy related to hedge accounting [line items]    
Risk weighted assets 79,343 69,773
Counterparty credit risk (CCR) | Credit risk    
Disclosure of risk management strategy related to hedge accounting [line items]    
Risk weighted assets 9,449 9,689
Counterparty credit risk (CCR) | Credit risk | Counterparty credit risk (CCR)    
Disclosure of risk management strategy related to hedge accounting [line items]    
Risk weighted assets 29,789 44,837
Counterparty credit risk (CCR) | Credit risk | Of which: standardized approach for counterparty credit risk (SA-CCR)    
Disclosure of risk management strategy related to hedge accounting [line items]    
Risk weighted assets 20,340 35,148
Equity investments in funds - look-through approach | Credit risk    
Disclosure of risk management strategy related to hedge accounting [line items]    
Risk weighted assets 6,433 4,667
Equity investments in funds - fall-back approach | Credit risk    
Disclosure of risk management strategy related to hedge accounting [line items]    
Risk weighted assets 1,109 716
Securitization exposures in banking book | Credit risk    
Disclosure of risk management strategy related to hedge accounting [line items]    
Risk weighted assets R$ 12,838 R$ 9,242