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FINANCIAL INSTRUMENTS (Details 15)
R$ in Thousands
 12 Months Ended
Dec. 31, 2024
BRL (R$)
shares
Dec. 31, 2023
BRL (R$)
shares
USIM 3 [Member]    
IfrsStatementLineItems [Line Items]    
Quantity (in shares) | shares 106,620,851 106,620,851
Equity interest (%) 15.12% 15.12%
Share price 5.32 9.20
Closing Balance R$ 567,222 R$ 980,912
Fair value adjustment recognized in profit or loss R$ (413,689) R$ 190,851
USIM 5 [Member]    
IfrsStatementLineItems [Line Items]    
Quantity (in shares) | shares 55,144,456 55,144,456
Equity interest (%) 10.07% 10.07%
Share price 5.32 9.29
Closing Balance R$ 293,369 R$ 512,292
Fair value adjustment recognized in profit or loss (218,923) 117,458
Total USIM Shares [Member]    
IfrsStatementLineItems [Line Items]    
Closing Balance 860,591 1,493,204
Fair value adjustment recognized in profit or loss (632,612) R$ 308,309
PATI 3 [Member]    
IfrsStatementLineItems [Line Items]    
Quantity (in shares) | shares   2,705,726
Equity interest (%)   11.31%
Share price   29.10
Closing Balance   R$ 78,737
Fair value adjustment recognized in profit or loss (15,963)
Total PATI Shares [Member]    
IfrsStatementLineItems [Line Items]    
Closing Balance 860,591 1,571,941
Fair value adjustment recognized in profit or loss R$ (632,612) R$ 292,346