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CONCESSION FINANCIAL AND SECTOR ASSETS AND LIABILITIES (Details Narrative) - BRL (R$) R$ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
IfrsStatementLineItems [Line Items] |  |
fair value through profit or loss | R$ 816 | R$ 816
Concession fee | 2,216 |
Usina Hidreletrica Jaguara [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Investment | 174 |
Usina Hidreletrica Sao Simao [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Investment | 3 |
Usina Hidreletrica Miranda [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Investment | R$ 23 |

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