v3.26.1
RISK MANAGEMENT - Sensitivity analysis (Details) - Currency risk
€ in Thousands, R$ in Thousands, $ in Thousands
6 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2026
EUR (€)
Jun. 30, 2026
BRL (R$)
Rate
Jun. 30, 2026
USD ($)
Rate
Jun. 30, 2026
EUR (€)
Rate
Dec. 31, 2025
BRL (R$)
Dec. 31, 2025
USD ($)
Dec. 31, 2025
EUR (€)
U.S. dollar                
Disclosure of detailed information about financial instruments [line items]                
Final rate     5.2 5.2 5.2      
Exposed assets (liabilities), net     R$ (18,858,451) $ (3,643,019)   R$ (35,729,371) $ (6,493,416)  
U.S. dollar | Interest rate devaluation by -10%                
Disclosure of detailed information about financial instruments [line items]                
Final rate     4.7 4.7 4.7      
Effect on profit or loss | $ $ 1,885,845              
U.S. dollar | Interest rate devaluation by -25%                
Disclosure of detailed information about financial instruments [line items]                
Final rate     3.9 3.9 3.9      
Effect on profit or loss | $ 4,714,613              
U.S. dollar | Interest rate appreciation by 10%                
Disclosure of detailed information about financial instruments [line items]                
Final rate     5.7 5.7 5.7      
Effect on profit or loss | $ (1,885,845)              
U.S. dollar | Interest rate appreciation by 25%                
Disclosure of detailed information about financial instruments [line items]                
Final rate     6.5 6.5 6.5      
Effect on profit or loss | $ $ (4,714,613)              
Euro                
Disclosure of detailed information about financial instruments [line items]                
Final rate     5.9 5.9 5.9      
Exposed assets (liabilities), net     R$ 60,807   € 10,288 R$ 125,823   € 19,450
Euro | Interest rate devaluation by -10%                
Disclosure of detailed information about financial instruments [line items]                
Final rate     5.3 5.3 5.3      
Effect on profit or loss | €   € (6,081)            
Euro | Interest rate devaluation by -25%                
Disclosure of detailed information about financial instruments [line items]                
Final rate     4.4 4.4 4.4      
Effect on profit or loss | €   (15,202)            
Euro | Interest rate appreciation by 10%                
Disclosure of detailed information about financial instruments [line items]                
Final rate     6.5 6.5 6.5      
Effect on profit or loss | €   6,081            
Euro | Interest rate appreciation by 25%                
Disclosure of detailed information about financial instruments [line items]                
Final rate     7.4 7.4 7.4      
Effect on profit or loss | €   € 15,202