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INVESTMENTS IN NON-CONSOLIDATED COMPANIES (Investment in Usinas) (Details) - USD ($) $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disclosure of unconsolidated structured entities [line items] |  |  |  |
Usiminas' shareholders' equity | $ 13,768,393 | $ 12,235,038 | $ 8,443,153 | $ 7,714,873
Investments in non-consolidated companies | 821,571 | 751,475 | 471,306 |
Usinas Siderurgicas de Minas Gerais S.A. - USIMINAS |  |  |  |
Disclosure of unconsolidated structured entities [line items] |  |  |  |
Usiminas' shareholders' equity | $ 4,437,784 | 3,897,000 |  |
Percentage of interest of the Company over shareholders' equity | 20.40% |  |  |
Investments in non-consolidated companies | $ 725,705 | $ 681,711 | $ 422,948 |
Purchase price allocation | 56,255 |  |  |
Goodwill | 199,213 |  |  |
Impairment | (435,207) |  |  |
Usinas Siderurgicas de Minas Gerais S.A. - USIMINAS | Ternium S.A. |  |  |  |
Disclosure of unconsolidated structured entities [line items] |  |  |  |
Investments in non-consolidated companies | $ 905,444 |  |  |

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