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MARKETABLE SECURITIES (Details) - BRL (R$)
R$ in Millions
Dec. 31, 2022
Dec. 31, 2021
IfrsStatementLineItems [Line Items]    
Current investments R$ 1,745 R$ 1,724
Non-current investments 134 354
Investments 1,879 2,078
Bank deposit certificates (CDBs) [member]    
IfrsStatementLineItems [Line Items]    
Current investments [1] 191 101
Non-current investments [1] 127
Financial Notes Banks [member]    
IfrsStatementLineItems [Line Items]    
Current investments [2] 1,140 1,417
Non-current investments [2] 348
Marketable securities - treasury financial notes [member]    
IfrsStatementLineItems [Line Items]    
Current investments [3] 402 178
Other Investment [member]    
IfrsStatementLineItems [Line Items]    
Current investments 12 28
Non-current investments 1
Debentures [member]    
IfrsStatementLineItems [Line Items]    
Non-current investments [4] R$ 7 R$ 5
[1] Bank Certificates of Deposit (Certificados de Depósito Bancário, or CBDs), accrued interest varying between 103% to 104.4% of the CDI Rate (Interbank Rate for Interbank Certificates of Deposit or Certificados de Depósito Inter-bancário - CDIs) published by the Custody and Settlement Chamber (Câmara de Custódia e Liquidação, or Cetip) on December 31, 2022 (107.24% on December 31, 2021).
[2] Bank Financial Notes (Letras Financeiras, or LFs) are fixed-rate fixed-income securities, issued by banks and that accrued interest a percentage of the CDI rate published by Cetip. The LFs had remuneration rates varying between 103.3% and 110.26% of the CDI rate on December 31, 2022 (105% and 130% on December 31, 2021).
[3] Treasury Financial Notes (LFTs) are fixed-rate securities, their yield follows the daily changes in the Selic rate between the date of purchase and the date of maturity. The LFTs had remuneration rates varying between 13.65% and 13.88% in 2022 (9.12% and 9.50% in 2021).
[4] Debentures