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Property, Plant and Equipment - Schedule of Consortium (Details) - BRL (R$)
R$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
IfrsStatementLineItems [Line Items]    
Total R$ 78 R$ 80
Total 70 78
Total 8 2
Usina de Queimado [meber]    
IfrsStatementLineItems [Line Items]    
Total R$ 220 220
Usina de Queimado [meber] | Investment property completed [member]    
IfrsStatementLineItems [Line Items]    
Stake in power output (%) 82.50%  
Average annual depreciation rate (%) 3.94%  
Accumulated depreciation [member]    
IfrsStatementLineItems [Line Items]    
Total R$ (150) (142)
Usina De Queimado 1 [Member]    
IfrsStatementLineItems [Line Items]    
Total R$ 8 R$ 2
Usina De Queimado 1 [Member] | Investment Property Completed 1 [Member]    
IfrsStatementLineItems [Line Items]    
Stake in power output (%) 82.50%  
Average annual depreciation rate (%)