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FINANCIAL INSTRUMENTS AND RISK MANAGEMENT (Details 5) - BRL (R$) R$ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
IfrsStatementLineItems [Line Items] |  |
Net liabilities exposed | R$ (4,249) | R$ (5,954)
Foreign Currency Risk [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Net liabilities exposed | (814) | (1,067)
Local Currency [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Net liabilities exposed | (4,249) | (5,954)
Loan [Member] | Foreign Currency Risk [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Net liabilities exposed | (762) | (1,008)
Loan [Member] | Local Currency [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Net liabilities exposed | (3,975) | (5,623)
Suppliers (itaipu binacional) [member] | Foreign Currency Risk [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Net liabilities exposed | (52) | (59)
Suppliers (itaipu binacional) [member] | Local Currency [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Net liabilities exposed | R$ (274) | R$ (331)

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