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MARKETABLE SECURITIES (Details) - BRL (R$)
R$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
MARKETABLE SECURITIES    
Marketable securities R$ 7,758,329 R$ 2,396,857
Current 7,508,275 2,212,079
Non-Current 250,054 184,778
Domestic (Brazil)    
MARKETABLE SECURITIES    
Marketable securities 5,363,662 2,396,857
Foreign    
MARKETABLE SECURITIES    
Marketable securities 2,394,667  
Private Funds | Domestic (Brazil)    
MARKETABLE SECURITIES    
Marketable securities R$ 17,120 175,317
Private Funds | CDI    
MARKETABLE SECURITIES    
Percentage of basis used to calculate interest rate 99.60%  
Public titles measured at fair value through profit or loss | Domestic (Brazil)    
MARKETABLE SECURITIES    
Marketable securities R$ 637,616 444,712
Public titles measured at fair value through profit or loss | CDI    
MARKETABLE SECURITIES    
Percentage of basis used to calculate interest rate 99.60%  
Private Securities (CDBs) | Domestic (Brazil)    
MARKETABLE SECURITIES    
Marketable securities R$ 4,456,828 1,585,605
Private Securities (CDBs) | CDI    
MARKETABLE SECURITIES    
Percentage of basis used to calculate interest rate 102.44%  
Private Securities (CDBs) - Escrow Account | Domestic (Brazil)    
MARKETABLE SECURITIES    
Marketable securities R$ 250,054 184,778
Private Securities (CDBs) - Escrow Account | CDI    
MARKETABLE SECURITIES    
Percentage of basis used to calculate interest rate 102.79%  
Time Deposits | Foreign    
MARKETABLE SECURITIES    
Marketable securities R$ 2,376,369  
Average yield p.a. % 0.79%  
Other | Domestic (Brazil)    
MARKETABLE SECURITIES    
Marketable securities R$ 2,044 R$ 6,445
Other | Foreign    
MARKETABLE SECURITIES    
Marketable securities R$ 18,298  
Average yield p.a. % 7.26%