v3.25.1
Financial instruments - Sensitivity analysis – foreign exchange rate exposure – derivative financial instruments (Details) - Currency risk [member] - BRL (R$)
R$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2025
Dec. 31, 2023
Possible 25%    
Disclosure of detailed information about financial instruments [line items]    
Closing Foreign Exchange Rate, Percentage of increase (decrease) 25.00%  
Possible 25% | U.S. Dollar to Brazilian Real | Derivative options    
Disclosure of detailed information about financial instruments [line items]    
Derivative financial assets R$ (8,199,971)  
Possible 25% | U.S. Dollar to Brazilian Real | Derivative swaps    
Disclosure of detailed information about financial instruments [line items]    
Derivative financial assets (2,500,027)  
Possible 25% | U.S. Dollar to Brazilian Real | Derivative Non-Deliverable Forward (‘NDF’) Contracts    
Disclosure of detailed information about financial instruments [line items]    
Derivative financial assets (255,861)  
Possible 25% | U.S. Dollar to Brazilian Real | Embedded derivative    
Disclosure of detailed information about financial instruments [line items]    
Derivative financial assets (178,519)  
Possible 25% | U.S. Dollar to Brazilian Real | Commodity Derivatives    
Disclosure of detailed information about financial instruments [line items]    
Derivative financial assets R$ 7,337  
Remote 50%    
Disclosure of detailed information about financial instruments [line items]    
Closing Foreign Exchange Rate, Percentage of increase (decrease) 50.00%  
Remote 50% | U.S. Dollar to Brazilian Real | Derivative options    
Disclosure of detailed information about financial instruments [line items]    
Derivative financial assets R$ (17,829,451)  
Remote 50% | U.S. Dollar to Brazilian Real | Derivative swaps    
Disclosure of detailed information about financial instruments [line items]    
Derivative financial assets (4,807,341)  
Remote 50% | U.S. Dollar to Brazilian Real | Derivative Non-Deliverable Forward (‘NDF’) Contracts    
Disclosure of detailed information about financial instruments [line items]    
Derivative financial assets (511,664)  
Remote 50% | U.S. Dollar to Brazilian Real | Embedded derivative    
Disclosure of detailed information about financial instruments [line items]    
Derivative financial assets (357,039)  
Remote 50% | U.S. Dollar to Brazilian Real | Commodity Derivatives    
Disclosure of detailed information about financial instruments [line items]    
Derivative financial assets 14,676  
Probable (base value) | U.S. Dollar to Brazilian Real | Derivative options    
Disclosure of detailed information about financial instruments [line items]    
Derivative financial assets (1,518,526)  
Probable (base value) | U.S. Dollar to Brazilian Real | Derivative swaps    
Disclosure of detailed information about financial instruments [line items]    
Derivative financial assets (1,449,747)  
Probable (base value) | U.S. Dollar to Brazilian Real | Derivative Non-Deliverable Forward (‘NDF’) Contracts    
Disclosure of detailed information about financial instruments [line items]    
Derivative financial assets (36,977)  
Probable (base value) | U.S. Dollar to Brazilian Real | Embedded derivative    
Disclosure of detailed information about financial instruments [line items]    
Derivative financial assets (23,225)  
Probable (base value) | U.S. Dollar to Brazilian Real | Commodity Derivatives    
Disclosure of detailed information about financial instruments [line items]    
Derivative financial assets R$ 29,357  
Selling transactions in the futures markets    
Disclosure of detailed information about financial instruments [line items]    
Value at Risk Time Horizon   24 years