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SEGMENT INFORMATION (Tables) | 12 Months Ended
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Dec. 31, 2023
Disclosure of entity's operating segments [Abstract] |
TERNIUM TO INTEGRATE OPERATIONS IN THE USMCA |
|  | Year ended December 31, 2023
|  | Steel |  | Mining |  | Usiminas |  | Inter-segment eliminations |  | Total
Operating income - Management view |  | 2,404,189 |  |  | (58,037) |  |  | 64,423 |  |  | (6,401) |  |  | 2,404,174 |
Reconciliation: |  |  |  |  |  |  |  |  |  |
Differences in Cost of sales |  |  |  |  |  |  |  |  |  | (206,160) |
Operating income - Under IFRS |  |  |  |  |  |  |  |  |  | 2,198,014 |
Financial income (expense), net |  |  |  |  |  |  |  |  |  | 123,454 |
Equity in earnings (losses) of non-consolidated companies |  |  |  |  |  |  |  |  |  | 105,305 |
Effect related to the increase of the participation in Usiminas |  |  |  |  |  |  |  |  |  | (171,045) |
Recycling of other comprehensive income related to Usiminas |  |  |  |  |  |  |  |  |  | (934,946) |
Income before income tax expense - IFRS |  |  |  |  |  |  |  |  |  | 1,320,782 |
Net sales from external customers |  | 14,909,209 |  |  | 96 |  |  | 2,700,787 |  |  | — |  |  | 17,610,092 |
Net sales from transactions with other operating segments of the same entity |  | 285,025 |  |  | 500,401 |  |  | 31,620 |  |  | (817,046) |  |  | — |
Depreciation and amortization |  | (520,328) |  |  | (107,546) |  |  | (29,819) |  |  | — |  |  | (657,693) |
|  | Year ended December 31, 2022
|  | Steel |  | Mining |  | Usiminas |  | Inter-segment eliminations |  | Total
Operating income - Management view |  | 2,556,949 |  |  | 3,716 |  |  | — |  |  | 10,500 |  |  | 2,571,165 |
Reconciliation: |  |  |  |  |  |  |  |  |  |
Differences in Cost of sales |  |  |  |  |  |  |  |  |  | 128,354 |
Operating income - Under IFRS |  |  |  |  |  |  |  |  |  | 2,699,519 |
Financial income (expense), net |  |  |  |  |  |  |  |  |  | (70,133) |
Equity in earnings (losses) of non-consolidated companies |  |  |  |  |  |  |  |  |  | 37,114 |
Income before income tax expense - IFRS |  |  |  |  |  |  |  |  |  | 2,666,500 |
Net sales from external customers |  | 16,414,334 |  |  | 132 |  |  | — |  |  | — |  |  | 16,414,466 |
Net sales from transactions with other operating segments of the same entity |  | — |  |  | 410,636 |  |  | — |  |  | (410,636) |  |  | — |
Depreciation and amortization |  | (523,818) |  |  | (92,674) |  |  | — |  |  | — |  |  | (616,492) |
|  | Year ended December 31, 2021
|  | Steel |  | Mining |  | Usiminas |  | Inter-segment eliminations |  | Total
Operating income - Management view |  | 4,210,135 |  |  | 204,070 |  |  | — |  |  | 1,586 |  |  | 4,415,791 |
Reconciliation: |  |  |  |  |  |  |  |  |  |
Differences in Cost of sales |  |  |  |  |  |  |  |  |  | 855,345 |
Operating income - Under IFRS |  |  |  |  |  |  |  |  |  | 5,271,136 |
Financial income (expense), net |  |  |  |  |  |  |  |  |  | 92,462 |
Equity in earnings (losses) of non-consolidated companies |  |  |  |  |  |  |  |  |  | 400,732 |
Income before income tax expense - IFRS |  |  |  |  |  |  |  |  |  | 5,764,330 |
Net sales from external customers |  | 16,043,033 |  |  | 47,711 |  |  | — |  |  | — |  |  | 16,090,744 |
Net sales from transactions with other operating segments of the same entity |  | — |  |  | 478,559 |  |  | — |  |  | (478,559) |  |  | — |
Depreciation and amortization |  | (528,144) |  |  | (63,646) |  |  | — |  |  | — |  |  | (591,790) |
Information on segment assets is not disclosed as it is not reviewed by the CEO. 5. SEGMENT INFORMATION (continued) TERNIUM TO INTEGRATE OPERATIONS IN THE USMCA On February 14, 2023, Ternium's Board of Directors approved the construction of a new upstream production capacity project into the company’s existing downstream facility in Pesquería, Nuevo León, Mexico. The increased slab production capacity will complement and support the company’s new state-of-the-art hot rolling mill, which began operations in mid-2021, as well as the previously announced downstream project in Mexico. Ternium expects to invest approximately $2.4 billion toward the construction of an electric arc furnace (EAF)-based steel shop with annual capacity of 2.6 million tons, as well as a direct reduced iron (DRI) module with annual capacity of 2.1 million tons. The slab production capacity program will also include the construction of a port facility for raw material handling. Start of operations is anticipated to occur during the first half of 2026.
Disclosure of Geographical Areas |
|  | Year ended December 31, 2023
|  | Mexico |  | Southern region |  | Brazil |  | Other markets |  | Total
Net sales |  | 9,419,873 |  |  | 3,588,651 |  |  | 2,518,764 |  |  | 2,082,804 |  |  | 17,610,092 |
Non-current assets (2) |  | 4,965,628 |  |  | 878,642 |  |  | 2,474,178 |  |  | 315,287 |  |  | 8,633,735 |
|  | Year ended December 31, 2022
|  | Mexico |  | Southern region |  | Brazil (1) |  | Other markets |  | Total
Net sales |  | 8,949,104 |  |  | 3,853,390 |  |  | 743,713 |  |  | 2,868,259 |  |  | 16,414,466 |
Non-current assets (2) |  | 4,769,161 |  |  | 859,351 |  |  | 1,265,013 |  |  | 312,771 |  |  | 7,206,296 |
|  | Year ended December 31, 2021
|  | Mexico |  | Southern region |  | Brazil |  | Other markets |  | Total
Net sales |  | 8,990,868 |  |  | 3,377,596 |  |  | 1,122,518 |  |  | 2,599,762 |  |  | 16,090,744 |
Non-current assets (2) |  | 4,789,273 |  |  | 861,149 |  |  | 1,373,377 |  |  | 310,035 |  |  | 7,333,834 |
(1) The non-current assets value includes the impact of the impairment charge of $99.0 million recognized in the Brazil CGU. (2) Includes Property, plant and equipment and Intangible assets
Disclosure of Products and Services | REVENUES BY PRODUCT
|  | Year ended December 31,
|  | 2023 |  | 2022 |  | 2021
Slabs |  | 177,240 |  |  | 640,231 |  |  | 1,304,437 |
Hot rolled (1) |  | 7,913,232 |  |  | 6,991,466 |  |  | 6,356,576 |
Cold rolled |  | 2,379,499 |  |  | 1,951,702 |  |  | 1,990,143 |
Coated (2) |  | 5,708,328 |  |  | 5,704,765 |  |  | 5,303,394 |
Roll-formed and tubular (3) |  | 789,255 |  |  | 660,830 |  |  | 659,609 |
Billets, round bars and others |  | 45,351 |  |  | 142,511 |  |  | 167,138 |
Other products (4) |  | 597,187 |  |  | 322,961 |  |  | 309,447 |
TOTAL SALES |  | 17,610,092 |  |  | 16,414,466 |  |  | 16,090,744 |
(1) Hot rolled includes hot rolled flat products, merchant bars, reinforcing bars, stirrups and rods. (2) Coated includes tin plate and galvanized products. (3) Roll-formed and tubular includes pre-engineered metal building systems, tubes, beams, insulated panels, roofing and cladding, roof tiles and steel decks. (4) Other products include mainly sales of energy and pig iron.

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