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Accounts Receivables - Concessions (Details) - BRL (R$)
R$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
IfrsStatementLineItems [Line Items]    
Accounts receivable related to the concession R$ 2,278,293 R$ 2,266,805
Accounts receivable related to the concession, current 8,603 5,121
Accounts receivable related to the concession, noncurrent 2,269,690 2,261,684
Power Distribution Service Concession [Member]    
IfrsStatementLineItems [Line Items]    
Accounts receivable related to the concession 1,442,819 1,200,708
Piped Gas Distribution Service Concession [Member]    
IfrsStatementLineItems [Line Items]    
Accounts receivable related to the concession   233,026
Bonus From The Grant Of Concession Agreements Under The Quota System [Member]    
IfrsStatementLineItems [Line Items]    
Accounts receivable related to the concession 766,832 730,851
Generation Concession Agreements [Member]    
IfrsStatementLineItems [Line Items]    
Accounts receivable related to the concession R$ 68,642 R$ 102,220