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SHAREHOLDERS' EQUITY (Details) - shares | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Reserve Quantities [Line Items] |  |  |
Number of common shares outstanding |  | 1,326,093,947 | 1,387,524,047
Percentage of shares |  | 100.00% | 100.00%
Outstanding Shares [Member] |  |  |
Reserve Quantities [Line Items] |  |  |
Number of common shares outstanding |  | 1,326,093,947,000 | 1,341,734,047,000
Percentage of shares |  | 100.00% | 96.70%
Percentage of voting equity interests acquired |  | 100.00% | 100.00%
Treasury shares [member] |  |  |
Reserve Quantities [Line Items] |  |  |
Number of common shares outstanding |  |  | 45,790,000
Percentage of shares |  |  | 3.30%
Vicunha Acos S A [Member] |  |  |
Reserve Quantities [Line Items] |  |  |
Number of common shares outstanding | [1] | 679,522,254,000 | 679,522,254,000
Percentage of shares | [1] | 51.24% | 48.97%
Percentage of voting equity interests acquired | [1] | 51.24% | 50.65%
Rio Laco Participacoes S A [Member] |  |  |
Reserve Quantities [Line Items] |  |  |
Number of common shares outstanding | [1] | 45,706,242,000 | 45,706,242,000
Percentage of shares | [1] | 3.45% | 3.29%
Percentage of voting equity interests acquired | [1] | 3.45% | 3.41%
Nyse Adrs [Member] |  |  |
Reserve Quantities [Line Items] |  |  |
Number of common shares outstanding |  | 254,520,040 | 250,564,538
Percentage of shares |  | 19.19% | 18.06%
Percentage of voting equity interests acquired |  | 19.19% | 18.67%
Other One [Member] |  |  |
Reserve Quantities [Line Items] |  |  |
Number of common shares outstanding |  | 346,345,411 | 365,941,013
Percentage of shares |  | 26.12% | 26.38%
Percentage of voting equity interests acquired |  | 26.12% | 27.27%
[1] | Controlling group companies.

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