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v3.23.1

CONTINGENCIES, COMMITMENTS AND RESTRICTIONS ON THE DISTRIBUTION OF PROFITS (Shareholder claims, Mexican income tax adjustment & Argentine tax claim) (Details) $ in Millions, R$ in Billions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2021 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2016 BRL (R$)
Comissão de Valores Mobiliários | Usinas Siderurgicas de Minas Gerais S.A. - USIMINAS |  |  |
Disclosure of contingent liabilities [line items] |  |  |
Increase in capital | R$ |  |  | R$ 1
Mexican Tax Authority |  |  |
Disclosure of contingent liabilities [line items] |  |  |
Adjustments for current tax of prior periods |  | $ 47.2 |
Mexican Tax Authority | 2008 |  |  |
Disclosure of contingent liabilities [line items] |  |  |
Increase (Decrease) In Contingent Tax Liability |  | 15.5 |
Mexican Tax Authority | 2011 |  |  |
Disclosure of contingent liabilities [line items] |  |  |
Increase (Decrease) In Contingent Tax Liability |  | $ 31.7 |
Domestic Tax Authority | Mexican Tax Authority | 2008 |  |  |
Disclosure of contingent liabilities [line items] |  |  |
Tax contingent liability | $ 64.7 |  |
Domestic Tax Authority | Mexican Tax Authority | 2011 |  |  |
Disclosure of contingent liabilities [line items] |  |  |
Tax contingent liability | $ 31.7 |  |

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