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NON-CASH TRANSACTIONS (Details Narrative) - BRL (R$)
R$ in Millions
 12 Months Ended
Jun. 30, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
IfrsStatementLineItems [Line Items]        
Capitalized financial costs   R$ 15 R$ 33 R$ 23
Amount of capital increase R$ 300      
Addition lease amount   11    
Addition lease amount   62 R$ 6  
Companhia De Transmissao Centroeste De Minas [Member]        
IfrsStatementLineItems [Line Items]        
Cash arising from the business combination   27    
Payment made for acquisition   R$ 45