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Concession Financial and Sector Assets and Liabilities - Additional Information (Details)
R$ in Millions
12 Months Ended
Mar. 17, 2023
Number
Dec. 31, 2024
BRL (R$)
Number
Dec. 31, 2023
BRL (R$)
Dec. 31, 2022
IfrsStatementLineItems [Line Items]        
Financial asset   R$ 8,072 R$ 6,540  
Cash   871    
Concession fee   R$ 2,216    
Average effect rate   23.93% 15.82% 0.63%
Number of hydroelectric generation plants and units | Number 15 15    
Concession Contract Eight [Member]        
IfrsStatementLineItems [Line Items]        
Concession Grant Fee Paid Period   30 years    
Number of hydroelectric generation plants and units | Number   18