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EQUITY AND REMUNERATION TO SHAREHOLDERS (Details 3) - BRL (R$)
R$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Equity And Remuneration To Shareholders      
Adjustments to actuarial liabilities - Employee benefits R$ (260) R$ (329) R$ (340)
Subsidiary and jointly controlled entity      
Adjustments to actuarial liabilities - Employee benefits (2,043) (2,433) (2,660)
Deemed cost of PP&E 427 554 569
Others 2
Total  (1,614) (1,879) (2,091)
Valuation adjustments R$ (1,874) R$ (2,208) R$ (2,431)