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SHAREHOLDERS´ EQUITY (Details Narrative) - BRL (R$) R$ in Millions | Dec. 31, 2021 | Feb. 22, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Reserve Quantities [Line Items] |  |  |
Issued capital | R$ 10,240 |  | R$ 6,040
Number of shares outstanding | 1,387,524,047 |  | 1,387,524,047
Number of shares authorised | 4,200 |  |
Capital increase |  | R$ 10,240 |
Number of shares authorised | 2,400,000,000 |  |
Percentage of shares | 100.00% |  | 100.00%
Rio Laco Participacoes 1 S A [Member] |  |  |
Reserve Quantities [Line Items] |  |  |
Percentage of shares |  |  | 5.00%
Percentage of shares |  |  | 20.00%

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