v3.26.1
Interest and similar income and expenses and income of financial assets and liabilities at fair value through profit or loss - Schedule of Financial Assets and Liabilities at Fair Value Through Profit or Loss (Details) - BRL (R$)
R$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of financial assets [line items]      
Total R$ 58,054 R$ 32,011 R$ 29,145
Derivatives      
Disclosure of financial assets [line items]      
Total (1,779) 19,781 (2,954)
Financial assets designated at fair value through profit or loss      
Disclosure of financial assets [line items]      
Total 923 (3) 479
Securities      
Disclosure of financial assets [line items]      
Total 58,892 12,170 31,399
Other financial assets at fair value through profit or loss      
Disclosure of financial assets [line items]      
Total (1) 2 1,897
Financial liabilities at fair value through profit or loss      
Disclosure of financial assets [line items]      
Total 0 (14) (1,731)
Financial liabilities designated at fair value      
Disclosure of financial assets [line items]      
Total R$ 19 R$ 75 R$ 55