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FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT - Exchange rate risk management (Details) - Currency Risk - BRL (R$)
R$ in Thousands
6 Months Ended
Jun. 30, 2022
Dec. 31, 2021
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT    
Value at risk time horizon 18 months  
USD    
Assets and liabilities exposed to foreign currency    
Financial assets R$ 22,074,774 R$ 21,878,548
Financial liabilities (70,072,626) (74,213,667)
Net liability exposure (47,997,852) (52,335,119)
USD | Trade accounts payable    
Assets and liabilities exposed to foreign currency    
Financial liabilities (849,543) (605,557)
USD | Loans and financing    
Assets and liabilities exposed to foreign currency    
Financial liabilities (61,974,010) (65,972,300)
USD | Liabilities for asset acquisition and associates    
Assets and liabilities exposed to foreign currency    
Financial liabilities (2,028,019) (273,179)
USD | Derivative financial instruments    
Assets and liabilities exposed to foreign currency    
Financial liabilities (5,221,054) (7,362,631)
USD | Cash and cash equivalents    
Assets and liabilities exposed to foreign currency    
Financial assets 7,459,784 13,411,978
USD | Marketable securities    
Assets and liabilities exposed to foreign currency    
Financial assets 7,949,880 2,394,667
USD | Trade accounts receivable    
Assets and liabilities exposed to foreign currency    
Financial assets 4,363,152 5,043,453
USD | Derivative financial instruments    
Assets and liabilities exposed to foreign currency    
Financial assets R$ 2,301,958 R$ 1,028,450