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INVESTMENTS (Details Narrative) - BRL (R$) R$ in Millions |  | 12 Months Ended |
--- | --- | --- | ---
Mar. 01, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
IfrsStatementLineItems [Line Items] |  |  |  |
[custom:DescriptionOfArbitrationRuling] |  | 6.97% to 8.05%, respectively, resulting in a consolidated ownership increase from 15.51% to 17.91%. |  |
Loss |  |  | R$ 2,407 | R$ 2,832
Renova [Member] | Events After Reporting Period [Member] | Bottom of range [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Percentage of equity interest | 1169.00% |  |  |
Central Eolica Praiasde Parajuru S A [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Amount of authorization to generate wind energy |  | R$ 49 | 54 |
Central Eolica Voltado Rio S A [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Amount of authorization to generate wind energy |  | 67 | 74 |
Amazonia Energia S A And Alianca Norte Energia S A [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Negative net working capital |  | R$ 189 | R$ 160 |

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