v3.26.1
Securities at fair value through profit or loss (FVPL) - Schedule of Cost and Fair Value per Maturity of Financial Assets at Fair Value Through Profit or Loss (Details) - BRL (R$)
R$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Gross book value    
Disclosure of financial assets [line items]    
Current R$ 150,736 R$ 135,385
Non-current 480,294 436,768
Total 631,030 572,153
Gross book value | Non-stated maturity    
Disclosure of financial assets [line items]    
Current 52,476 48,007
Gross book value | Up to one year    
Disclosure of financial assets [line items]    
Current 98,260 87,378
Gross book value | From one to five years    
Disclosure of financial assets [line items]    
Non-current 356,739 337,439
Gross book value | From five to ten years    
Disclosure of financial assets [line items]    
Non-current 94,449 64,604
Gross book value | After ten years    
Disclosure of financial assets [line items]    
Non-current 29,106 34,725
Fair value    
Disclosure of financial assets [line items]    
Current 150,847 133,168
Non-current 477,927 426,975
Total 628,774 560,143
Fair value | Non-stated maturity    
Disclosure of financial assets [line items]    
Current 52,718 45,488
Fair value | Up to one year    
Disclosure of financial assets [line items]    
Current 98,129 87,680
Fair value | From one to five years    
Disclosure of financial assets [line items]    
Non-current 356,539 332,313
Fair value | From five to ten years    
Disclosure of financial assets [line items]    
Non-current 93,757 62,659
Fair value | After ten years    
Disclosure of financial assets [line items]    
Non-current R$ 27,631 R$ 32,003