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TAX, CIVIL AND LABOR CLAIMS AND CONTINGENT ASSETS - Changes in Provisions (Details) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Changes in the tax, labor and civil provisions :      
Balance at the beginning of the year R$ 1,172,511    
Balance at the end of the year 1,741,026 R$ 1,172,511  
Legal proceedings provision      
Changes in the tax, labor and civil provisions :      
Balance at the beginning of the year 1,172,511 809,299 R$ 770,305
Additions 801,412 559,513 249,868
Interests 42,435 104,473 70,788
Reversal of accrued amounts (276,251) (304,678) (282,239)
Foreign exchange effect on provisions in foreign currency 919 3,904 577
Balance at the end of the year R$ 1,741,026 R$ 1,172,511 R$ 809,299