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Financial Instruments and Risk Management - Schedule of Risk of Increase In Inflation (Details) - BRL (R$)
R$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Assets      
Concession financial assets related to Distribution infrastructure - IPCA R$ 2,807 R$ 1,920  
Concession Grant Fee - IPCA (Note 12.3) 3,098 3,031  
Asset 5,905 4,951  
Liabilities      
Loans, financing and debentures - IPCA and IGP-DI (Note 20) (7,547) (4,522)  
Debt with pension fund (Forluz) - IPCA 90  
Deficit of pension plan (Forluz) - IPCA (494) (521)  
Leasing liabilities (429) (433) R$ (354)
Liability (8,470) (5,566)  
Net assets exposed R$ (2,565) R$ (615)