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EMPLOYEE BENEFITS - Defined benefit pension plan - Variation of the plan obligations (Details) - Defined benefit pension plan - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
EMPLOYEE BENEFITS      
Obligation at the beginning of the year R$ 1,083,719    
Cost of service 63,616 R$ 74,840 R$ 69,323
Interest expense 169,526 170,897 191,326
Past service cost   7,093 3,967
Actuarial remeasurements (1,058,898) (457,421) 467,106
Obligation at the end of the year 658,492 1,083,719  
Present value of the defined benefit obligations      
EMPLOYEE BENEFITS      
Obligation at the beginning of the year 5,409,065 5,921,285 4,601,965
Cost of service 63,616 74,840 69,323
Interest expense 169,526 170,897 191,326
Payment of benefits (317,779) (486,310) (434,650)
Past service cost   7,093 3,967
Settlement   (228,881) (190,948)
Actuarial remeasurements (1,058,898) (457,421) 467,106
Exchange Variance (424,317) 407,562 1,213,196
Obligation at the end of the year R$ 3,841,213 R$ 5,409,065 R$ 5,921,285