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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