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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, 2023
Dec. 31, 2022
Dec. 31, 2021
EMPLOYEE BENEFITS      
Fair value of the plan assets at the beginning of the year R$ 0 R$ 0 R$ 0
Contributions from sponsors 19,168 16,016 24,713
Contributions from participants 1,096 1,472 2,032
Payment of benefits (20,264) (17,488) (26,745)
Fair value of plan assets at the end of the year R$ 0 R$ 0 R$ 0