v3.26.1
Hedge accounting - Narrative (Details) - BRL (R$)
R$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of detailed information about hedged items [line items]    
Risk factor designated coverage ratio 100.00%  
Foreign currency conversion reserve R$ (20) R$ (226)
Remaining Accumulated    
Disclosure of detailed information about hedged items [line items]    
Effect of fair value hedge adjustments R$ (79) R$ 8