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FINANCIAL INSTRUMENTS AND RISK MANAGEMENT - Derivative financial instruments (Details) - BRL (R$)
R$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Disclosure of detailed information about financial instruments    
Asset R$ 373,606 R$ 986,862
Liability 657,514  
Derivative financial instruments for debt protection    
Disclosure of detailed information about financial instruments    
Liability 657,514  
Derivative financial instruments - electrical power supply    
Disclosure of detailed information about financial instruments    
Asset R$ 373,606 R$ 986,862