v3.26.1
Interbank deposits and securities purchased under agreements to resell (Details) - BRL (R$)
R$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of financial assets [line items]      
Securities purchased under agreements to resell R$ 31,052 R$ 71,072 R$ 75,960
Interbank deposits 46,694 10,087 R$ 8,582
(Provision for expected credit loss) 2,880,511 2,673,301  
Interbank deposits and securities purchased under agreements to resell      
Disclosure of financial assets [line items]      
Securities purchased under agreements to resell 280,595 243,220  
Collateral held 39,562 78,199  
Collateral repledge 162,795 117,108  
Assets received as collateral with right to sell or repledge 55,300 7,223  
Assets received as collateral without right to sell or repledge 107,495 109,885  
Collateral sold 78,238 47,913  
Interbank deposits 66,195 66,931  
Total 346,761 310,144  
Current 339,703 296,071  
Non-current 7,058 14,073  
Interbank deposits and securities purchased under agreements to resell | Impairment      
Disclosure of financial assets [line items]      
(Provision for expected credit loss) R$ (29) R$ (7)