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TRADE ACCOUNTS RECEIVABLE - Rollforward of the expected credit losses (Details) - Trade accounts receivable - BRL (R$)
R$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Rollforward of the expected credit losses    
Beginning balance R$ (41,889) R$ (41,996)
Addition (2,547) (9,350)
Reversal 3,184 3,328
Write-off 7,078 7,737
Exchange rate variation (589) (1,608)
Ending balance R$ (34,763) R$ (41,889)