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SALE OF PARTICIPATION OF TERNIUM ARGENTINA S.A. IN TERNIUM MEXICO S.A. DE C.V. AND PROSID INVESTMENTS S.A. TO TERNIUM INTERNACIONAL ESPAÑA S.L. - Narrative (Details) - Ternium Argentina S.A. $ in Millions | Dec. 21, 2021 USD ($) shares
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Disclosure of analysis of single amount of discontinued operations [line items] |
Dividend payment simultaneous with payment of shares | $ | $ 900
Percentage of positive votes for the sale of participation in subsidiary company | 95.00%
Ternium Mexico S.A. de C.V. | Ternium Internacional Espana S.L. |
Disclosure of analysis of single amount of discontinued operations [line items] |
Number of shares for the sale of participation in subsidiary company (shares) | shares | 103,770,972
Percentage of ownership for the sale of participation in subsidiary company | 28.73%
Offer value for the sale of participation in subsidiary company | $ | $ 1,000
Prosid Investments S.A. | Ternium Internacional Espana S.L. |
Disclosure of analysis of single amount of discontinued operations [line items] |
Number of shares for the sale of participation in subsidiary company (shares) | shares | 1,094,288,000
Percentage of ownership for the sale of participation in subsidiary company | 99.90%

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