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FINANCIAL INSTRUMENTS AND RISK MANAGEMENT (Details 8) - BRL (R$)
R$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Assets    
Marketable securities (Note 7) R$ 1,879 R$ 2,078
Assets 5,993 6,474
Assets 53,671 52,046
Liabilities    
Loans and debentures - CDI (Note 22) (3,975)  
Liabilities (31,887) (32,584)
Net assets exposed (1,069) R$ (1,726)
TJLP [member] | Book Value [Member]    
Assets    
Cash equivalents (Note 6) 1,345  
Marketable securities (Note 7) 1,878  
Restricted cash 16  
Assets 944  
Assets 4,183  
Liabilities    
Loans and debentures - CDI (Note 22) (2,041)  
Liabilities (2,041)  
Net assets exposed 2,142  
TJLP [member] | Probable Ccenario [Member]    
Assets    
Cash equivalents (Note 6) 1,513  
Marketable securities (Note 7) 2,113  
Restricted cash 18  
Assets 1,062  
Assets 4,706  
Liabilities    
Loans and debentures - CDI (Note 22) (2,296)  
Liabilities (2,296)  
Net assets exposed 2,410  
Net effect of fluctuation in interest rates 268  
TJLP [member] | Adverse Scenario [Member]    
Assets    
Cash equivalents (Note 6) 1,476  
Marketable securities (Note 7) 2,061  
Restricted cash 17  
Assets 1,036  
Assets 4,590  
Liabilities    
Loans and debentures - CDI (Note 22) (2,240)  
Liabilities (2,240)  
Net assets exposed 2,350  
Net effect of fluctuation in interest rates R$ 208