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CHANGES IN EQUITY - Treasury Shares (Details) - BRL (R$)
shares in Millions, R$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Changes In Equity      
Balance, treasury shares acquired/realized (in shares) 5.8 0.2 3.6
Balance, treasury shares acquired/realized, amount R$ (98.3) R$ (3.2) R$ (68.2)
Balance, treasury shares (in shares) (939.5) (938.5) (887.0)
Balance, treasury shares, amount R$ (1,037.8) R$ (941.7) R$ (955.2)
Changes during the year, treasury shares acquired/realized (in shares) 2.7 5.6 (3.4)
Changes during the year, treasury shares acquired/realized, amount R$ (33.5) R$ (95.1) R$ 65.0
Changes during the year, treasury shares (in shares) (2.1) (1.0) (51.5)
Changes during the year, treasury shares, amount R$ (35.6) R$ (96.1) R$ 13.5
Balance, treasury shares acquired/realized (in shares) 8.5 5.8 0.2
Balance, treasury shares acquired/realized, amount R$ (131.8) R$ (98.3) R$ (3.2)
Balance, treasury shares (in shares) (941.6) (939.5) (938.5)
Balance, treasury shares, amount R$ (1,073.4) R$ (1,037.8) R$ (941.7)