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6. CASH AND CASH EQUIVALENTS (Tables) | 12 Months Ended
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Dec. 31, 2020
Cash and cash equivalents [abstract] |
Schedule of cash and cash equivalents |
|  | 2020 |  | 2019
Bank accounts |  |  | 93 |  |  |  | 210 |
Cash equivalents |  |  |  |  |  |  |  |
Bank deposit certificates (CDBs) (1) |  |  | 1,416 |  |  |  | 290 |
Overnight (2) |  |  | 171 |  |  |  | 36 |
|  |  | 1,587 |  |  |  | 326 |
|  |  | 1,680 |  |  |  | 536 |
(1) | Bank Deposit Certificates (CDBs), accrued interest at 50% to 108%, of the CDI Rate (Interbank deposit rates) published by the Custody and Settlement Chamber (Cetip) in 2020 (80% to 106% in 2019 and 40% to 106% in 2018). For these CDBs, the Company has repo transactions which state, on their trading notes, the bank’s commitment to repurchase the security, on demand, on the maturity date of the transaction, or earlier.
(2) | Overnight transactions are repos available for redemption on the following day. They are usually backed by Treasury Bills, Notes or Bonds and referenced to a pre-fixed rate of 1.89% in 2020 (4.39%, in 2019 and 6.39% in 2018). Their purpose is to settle the short-term obligations of the Company, or to be used in the acquisition of other assets with better return to replenish the portfolio.

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