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EMPLOYEE BENEFITS - Post-employment health care benefit plan - Change in plan assets (Details) - Post-employment health care benefit - Plan assets - BRL (R$)
R$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
EMPLOYEE BENEFITS      
Fair value of the plan assets at the beginning of the year R$ 0 R$ 0 R$ 0
Contributions from sponsors 16,016 24,713 19,150
Contributions from participants 1,472 2,032 2,349
Payment of benefits (17,488) (26,745) (21,499)
Fair value of plan assets at the end of the year R$ 0 R$ 0 R$ 0