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Loans, financing, debentures and derivative financial instruments - Additional Information (Detail)
R$ in Thousands, $ in Millions
Dec. 31, 2024
BRL (R$)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
BRL (R$)
Dec. 31, 2022
BRL (R$)
Disclosure of detailed information about borrowings [line items]        
Transaction costs R$ 18,928   R$ 19,626 R$ 30,420
Amount appropriated to profit or loss in the future 69,914   84,516  
Amount of financing with real guarantees 114,472      
Amount of guarantees and promissory notes 13,586,936   10,966,890  
Collateral guarantees to secure letters of credits 97,947   103,600  
Loan 1 [member]        
Disclosure of detailed information about borrowings [line items]        
Notional amount | $   $ 300    
IPP [member]        
Disclosure of detailed information about borrowings [line items]        
Maximum amount of future payments related to these collaterals R$ 219,700   R$ 397,152