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INVESTMENTS IN NON-CONSOLIDATED COMPANIES (Schedule of principal in non-consolidated companies) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Disclosure of unconsolidated structured entities [line items] |  |  |
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] |  |  |
Proportion of voting rights held by non-consolidated companies | 20.40% |  |
Investments in non-consolidated companies | $ 725,705 | 681,711 | $ 422,948
Other non-consolidated companies |  |  |
Disclosure of unconsolidated structured entities [line items] |  |  |
Investments in non-consolidated companies | $ 5,307 | $ 5,624 |
Brazil | Usinas Siderurgicas de Minas Gerais S.A. - USIMINAS |  |  |
Disclosure of unconsolidated structured entities [line items] |  |  |
Proportion of voting rights held by non-consolidated companies | 34.39% | 34.39% |
Investments in non-consolidated companies | $ 725,705 | $ 681,711 |
Mexico | Techgen S.A. de C.V. |  |  |
Disclosure of unconsolidated structured entities [line items] |  |  |
Proportion of voting rights held by non-consolidated companies | 48.00% | 48.00% |
Investments in non-consolidated companies | $ 90,559 | $ 64,140 |

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