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19. LEASING TRANSACTIONS (Details Narrative) - BRL (R$) R$ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Lease Liabilities [member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Description of varied borrowing rate |  | Between 7.96% p.a. and 10.64% p.a., depending on the leasing contract period, and 13.17% p.a., respectively, for contracts with maturities of up to two years, two to five years and longer than five years.
PIS, Pasep and Cofins Taxes [member] |  |
Disclosure of fair value measurement of assets [line items] |  |
Amortization |  | R$ 5
Financial revenues | R$ 2 | R$ 2

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