v3.26.1
Derivatives - Schedule of Financial Assets Subject To Offsetting, Enforceable Master Netting Arrangements And Similar Agreements (Details) - BRL (R$)
R$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Disclosure of financial assets [line items]    
Gross financial assets subject to offsetting, enforceable master netting arrangements or similar agreements R$ 73,384 R$ 92,439
Net financial assets subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position 73,384 92,439
Related amounts not offset in the statement of Financial position, financial instruments (25,593) (637)
Related amounts not offset in the statement of Financial position, cash collateral received (99) (367)
Net financial assets subject to offsetting, enforceable master netting arrangements or similar agreements 47,692 91,435
Gross financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements 69,760 85,413
Net amount of financial assets presented in the statement of financial position 69,760 85,413
Related amounts not offset in the statement of Financial position, financial instruments (25,593) (637)
Net amount 44,167 84,776
Securities purchased under agreements to resell    
Disclosure of financial assets [line items]    
Gross financial assets subject to offsetting, enforceable master netting arrangements or similar agreements 280,595 243,219
Net financial assets subject to offsetting, enforceable master netting arrangements or similar agreements in statement of financial position 280,595 243,219
Related amounts not offset in the statement of Financial position, financial instruments (91) (11,648)
Net financial assets subject to offsetting, enforceable master netting arrangements or similar agreements 280,504 231,571
Gross financial liabilities subject to offsetting, enforceable master netting arrangements or similar agreements 434,607 388,787
Net amount of financial assets presented in the statement of financial position 434,607 388,787
Related amounts not offset in the statement of Financial position, financial instruments (5,479) (309,008)
Net amount R$ 429,128 R$ 79,779