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Accounts Receivables - Concessions (Details) - BRL (R$) R$ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
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IfrsStatementLineItems [Line Items] |  |
Accounts receivable related to the concession | R$ 2,819,255 | R$ 2,278,293
Accounts receivable related to the concession, current | 9,354 | 8,603
Accounts receivable related to the concession, noncurrent | 2,809,901 | 2,269,690
Power Distribution Service Concession [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Accounts receivable related to the concession | 1,954,679 | 1,442,819
Bonus From The Grant Of Concession Agreements Under The Quota System [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Accounts receivable related to the concession | 792,741 | 766,832
Generation Concession Agreements [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Accounts receivable related to the concession | R$ 71,835 | R$ 68,642

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