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EMPLOYEE BENEFIT PLANS - Roll-forward of actuarial liability (Details) - Defined benefit plan - BRL (R$)
R$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Roll-forward of actuarial liability    
Opening balance R$ 675,158 R$ 785,045
Interest on actuarial liabilities 59,258 55,849
Actuarial loss (gain) 12,231 (119,642)
Exchange rate variations (577) 37
Benefits paid (54,646) (46,131)
Closing balance R$ 691,424 R$ 675,158