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LOANS, FINANCING AND DEBENTURES - Estimated Credit Loss (Details) - BRL (R$)
R$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
FINANCING AND LOANS    
Financial assets   R$ 1,264,059
Loans and receivables | ECL    
FINANCING AND LOANS    
Financial assets R$ 4,757,692 4,736,089
Loans and receivables | Amazonas Energia S.A. | ECL    
FINANCING AND LOANS    
Financial assets R$ 4,593,471 R$ 4,596,971