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Note 14 - Investments in non-consolidated companies (Tables) | 12 Months Ended
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Dec. 31, 2024
Disclosure of unconsolidated structured entities [line items] |
Disclosure of unconsolidated structured entities [text block] |
| Year ended December 31, |
| 2024 |  |  | 2023 |
At the beginning of the year | 1,608,804 |  |  | 1,540,646 |
Translation differences | (47,840 | ) |  | 110,801 |
Equity in earnings of non-consolidated companies | 8,548 |  |  | 79,411 |
Dividends and distributions declared | (71,212 | ) |  | (69,216 | )
Acquisition of non-consolidated companies | - |  |  | 22,661 |
Decrease due to step-acquisition | - |  |  | (23,453 | )
Increase / (decrease) in equity reserves and others | 45,357 |  |  | (52,046 | )
At the end of the year | 1,543,657 |  |  | 1,608,804 |
Disclosure of detailed information about principal non-consolidated companies [text block] |
|  | % ownership at December 31, |  | Book value at December 31, |
Company | Country of incorporation | 2024 |  | 2023 |  | 2024 |  |  | 2023 |
a) Ternium (*) | Luxembourg | 11.46% |  | 11.46% |  | 1,377,911 |  |  | 1,430,616 |
b) Usiminas (**) | Brazil | 3.96% |  | 3.96% |  | 102,812 |  |  | 123,654 |
c) Techgen | Mexico | 22.00% |  | 22.00% |  | 59,782 |  |  | 53,556 |
Others |  |  |  |  |  | 3,152 |  |  | 978 |
|  |  |  |  |  | 1,543,657 |  |  | 1,608,804 |
(*) Including treasury shares. (**) At December 31, 20 2 4 and 2023, the voting rights were 6.76%.
Ternium S.A. [member] |
Disclosure of unconsolidated structured entities [line items] |
Disclosure of detailed information about selected financial information [text block] |
| Ternium |
| 2024 |  |  | 2023 |
Non-current assets | 12,050,457 |  |  | 12,148,560 |
Current assets | 11,078,090 |  |  | 12,030,544 |
Total assets | 23,128,547 |  |  | 24,179,104 |
Non-current liabilities | 3,157,819 |  |  | 3,566,643 |
Current liabilities | 3,839,159 |  |  | 3,800,602 |
Total liabilities | 6,996,978 |  |  | 7,367,245 |
Total equity | 16,131,569 |  |  | 16,811,859 |
Non-controlling interests | 4,163,383 |  |  | 4,393,264 |
Revenues | 17,649,060 |  |  | 17,610,092 |
Gross profit | 2,888,836 |  |  | 3,559,355 |
Net (loss) / income for the year attributable to shareholders' equity | (53,672 | ) |  | 676,043 |
Other comprehensive income | 211,817 |  |  | 465,885 |
Total comprehensive income | 158,145 |  |  | 1,141,928 |
Usiminas [member] |
Disclosure of unconsolidated structured entities [line items] |
Disclosure of detailed information about selected financial information [text block] |
| Usiminas |
| 2024 |  |  | 2023 |
Non-current assets | 3,623,996 |  |  | 4,591,763 |
Current assets | 3,234,742 |  |  | 3,589,129 |
Total assets | 6,858,738 |  |  | 8,180,892 |
Non-current liabilities | 1,357,347 |  |  | 1,672,676 |
Current liabilities | 772,412 |  |  | 1,139,031 |
Total liabilities | 2,129,758 |  |  | 2,811,706 |
Total equity | 4,728,980 |  |  | 5,369,186 |
Non-controlling interests | 452,481 |  |  | 556,418 |
Revenues | 4,800,787 |  |  | 5,531,985 |
Gross profit | 308,043 |  |  | 357,845 |
Net (loss) / income for the year attributable to shareholders' equity | (27,084 | ) |  | 278,402 |
Other comprehensive income | 31,564 |  |  | (72,062 | )
Total comprehensive income | 4,480 |  |  | 206,340 |

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