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FOREIGN EXCHANGE RESTRICTIONS IN ARGENTINA - (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Apr. 24, 2023
Disclosure of subsidiaries [line items] |  |  |  |
Net sales | $ 17,610,092 | $ 16,414,466 | $ 16,090,744 |
Assets | 24,179,104 | 17,491,548 |  |
Liabilities | 7,367,245 | 3,723,155 |  |
Capital and reserves attributable to the owners of the parent | 12,418,595 | 11,845,959 |  |
Financial assets | 6,585,722 | 5,007,447 |  |
Financial liabilities | 5,043,160 | 2,438,751 |  |
Current dividend payables | 51,249 | 0 |  |
Reserve of gains and losses on financial assets measured at fair value through other comprehensive income | 113,000 |  |  |
Ternium Argentina S.A. |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Net sales | 3,419,000 | 3,830,000 |  |
Profit (loss) from continuing operations | 686,000 | 756,000 |  |
Assets | 5,083,000 | 5,258,000 |  |
Liabilities | 759,000 | 511,000 |  |
Capital and reserves attributable to the owners of the parent | 4,324,000 | $ 4,747,000 |  |
Cash and cash equivalents and other investments | 1,094,000 |  |  |
Financial assets | 103,000 |  |  |
Financial liabilities | 220,000 |  |  |
Current dividend payables |  |  |  | $ 624,000
Ternium Argentina S.A. | Sovereign Bonds |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Cash and cash equivalents and other investments | 902,000 |  |  |
Ternium Argentina S.A. | Negotiable Obligations And Promissory Notes |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Cash and cash equivalents and other investments | 136,000 |  |  |
Ternium Argentina S.A. | Argentine Pesos-Denominated Instruments |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Cash and cash equivalents and other investments | $ 56,000 |  |  |

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