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FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT - Sensitivity analysis - exposure to interest rates (Details) - Interest rate risk
R$ in Thousands
 12 Months Ended
Dec. 31, 2022
BRL (R$)
Possible 25%  
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT  
Percentage increase (decrease) in interest rate 25.00%
Remote 50%  
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT  
Percentage increase (decrease) in interest rate 50.00%
CDI/SELIC | Cash and cash equivalents | Probable  
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT  
Effect on profit or loss and equity due to changes in fair value of financial assets attributable to an increase in measurement input R$ 1,441,758
CDI/SELIC | Cash and cash equivalents | Possible 25%  
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT  
Effect on profit or loss and equity due to changes in fair value of financial assets attributable to an increase in measurement input 49,200
CDI/SELIC | Cash and cash equivalents | Remote 50%  
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT  
Effect on profit or loss and equity due to changes in fair value of financial assets attributable to an increase in measurement input 98,400
CDI/SELIC | Marketable securities | Probable  
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT  
Effect on profit or loss and equity due to changes in fair value of financial assets attributable to an increase in measurement input 3,383,832
CDI/SELIC | Marketable securities | Possible 25%  
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT  
Effect on profit or loss and equity due to changes in fair value of financial assets attributable to an increase in measurement input 115,473
CDI/SELIC | Marketable securities | Remote 50%  
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT  
Effect on profit or loss and equity due to changes in fair value of financial assets attributable to an increase in measurement input 230,947
CDI/SELIC | Loans and financing | Probable  
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT  
Effect on profit or loss and equity due to changes in fair value of financial assets attributable to an increase in measurement input 8,001,775
CDI/SELIC | Loans and financing | Possible 25%  
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT  
Effect on profit or loss and equity due to changes in fair value of financial assets attributable to an increase in measurement input 273,061
CDI/SELIC | Loans and financing | Remote 50%  
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT  
Effect on profit or loss and equity due to changes in fair value of financial assets attributable to an increase in measurement input 546,121
CDI | Derivative options | Probable  
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT  
Effect on profit or loss and equity due to changes in fair value of financial liabilities attributable to an increase in measurement input 1,596,089
CDI | Derivative options | Possible 25%  
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT  
Effect on profit or loss and equity due to changes in fair value of financial liabilities attributable to an increase in measurement input (594,361)
CDI | Derivative options | Remote 50%  
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT  
Effect on profit or loss and equity due to changes in fair value of financial liabilities attributable to an increase in measurement input (1,140,951)
CDI | Derivative swaps | Probable  
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT  
Effect on profit or loss and equity due to changes in fair value of financial liabilities attributable to an increase in measurement input (1,768,134)
CDI | Derivative swaps | Possible 25%  
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT  
Effect on profit or loss and equity due to changes in fair value of financial liabilities attributable to an increase in measurement input (10,977)
CDI | Derivative swaps | Remote 50%  
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT  
Effect on profit or loss and equity due to changes in fair value of financial liabilities attributable to an increase in measurement input (22,123)
TJLP | Loans and financing | Probable  
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT  
Effect on profit or loss and equity due to changes in fair value of financial liabilities attributable to an increase in measurement input 317,281
TJLP | Loans and financing | Possible 25%  
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT  
Effect on profit or loss and equity due to changes in fair value of financial liabilities attributable to an increase in measurement input 5,711
TJLP | Loans and financing | Remote 50%  
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT  
Effect on profit or loss and equity due to changes in fair value of financial liabilities attributable to an increase in measurement input 11,422
LIBOR | Loans and financing | Probable  
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT  
Effect on profit or loss and equity due to changes in fair value of financial liabilities attributable to an increase in measurement input 16,930,445
LIBOR | Loans and financing | Possible 25%  
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT  
Effect on profit or loss and equity due to changes in fair value of financial liabilities attributable to an increase in measurement input 201,781
LIBOR | Loans and financing | Remote 50%  
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT  
Effect on profit or loss and equity due to changes in fair value of financial liabilities attributable to an increase in measurement input 403,562
LIBOR | Derivative swaps | Probable  
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT  
Effect on profit or loss and equity due to changes in fair value of financial liabilities attributable to an increase in measurement input (1,768,134)
LIBOR | Derivative swaps | Possible 25%  
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT  
Effect on profit or loss and equity due to changes in fair value of financial liabilities attributable to an increase in measurement input 369,294
LIBOR | Derivative swaps | Remote 50%  
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT  
Effect on profit or loss and equity due to changes in fair value of financial liabilities attributable to an increase in measurement input R$ 738,044