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CONCESSION FINANCIAL AND SECTOR ASSETS AND LIABILITIES (Details) - BRL (R$) R$ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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IfrsStatementLineItems [Line Items] |  |
Assets | R$ 5,993 | R$ 6,474
Current assets | 1,055 | 1,505
Non-current assets | 4,938 | 4,969
Current liabilities |  | (51)
Assets related to infrastructure [member] |  |
IfrsStatementLineItems [Line Items] |  |
Assets | 5,049 | 4,326
Energy distribution concession [member] | Assets related to infrastructure [member] |  |
IfrsStatementLineItems [Line Items] |  |
Assets | 1,370 | 684
Gas distribution concession [member] | Assets related to infrastructure [member] |  |
IfrsStatementLineItems [Line Items] |  |
Assets | 37 | 34
Generation receivable [member] | Assets related to infrastructure [member] |  |
IfrsStatementLineItems [Line Items] |  |
Assets | 692 | 816
Concession grant fee [member] | Assets related to infrastructure [member] |  |
IfrsStatementLineItems [Line Items] |  |
Assets | 2,950 | 2,792
Cva and other financial components in tariff adjustments [member] | Assets related to infrastructure [member] |  |
IfrsStatementLineItems [Line Items] |  |
Assets | 944 | 2,148
Cva and other financial components in tariff adjustments [member] | Liabilities related to infrastructure [member] |  |
IfrsStatementLineItems [Line Items] |  |
Current liabilities |  | R$ (51)

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