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LOANS, FINANCING AND DEBENTURES - Breakdown by currency (Details) - BRL (R$)
R$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
LOANS, FINANCING AND DEBENTURES      
Borrowings R$ 79,628,629 R$ 72,899,882 R$ 63,684,326
Brazilian Reais      
LOANS, FINANCING AND DEBENTURES      
Borrowings 13,629,978 14,727,803  
USD      
LOANS, FINANCING AND DEBENTURES      
Borrowings 65,972,300 58,145,087  
Currency basket      
LOANS, FINANCING AND DEBENTURES      
Borrowings R$ 26,351 R$ 26,992