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EQUITY AND REMUNERATION TO SHAREHOLDERS (Details 8) - BRL (R$)
R$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
IfrsStatementLineItems [Line Items]      
Proposed dividends R$ 2,232 R$ 1,967 R$ 1,482
Change Dividend [Member]      
IfrsStatementLineItems [Line Items]      
Balance on December 31, 2021 1,910 1,449  
Proposed dividends 2,232 1,967  
Dividends proposed for non-controlling shareholder 1 1  
Tax withheld at source on Interest on Equity (186) (91)  
Dividends retained - Minas Gerais state government   (13)  
Dividends paid (2,094) (1,403)  
Balance on December 31, 2022 R$ 1,863 R$ 1,910 R$ 1,449