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Note 14 - Investments in non-consolidated companies (Tables) | 12 Months Ended
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Dec. 31, 2023
Disclosure of unconsolidated structured entities [line items] |
Disclosure of unconsolidated structured entities [text block] |
| Year ended December 31, |
| 2023 |  |  | 2022 |
At the beginning of the year | 1,540,646 |  |  | 1,383,774 |
Translation differences | 110,801 |  |  | 7,336 |
Equity in earnings of non-consolidated companies | 79,411 |  |  | 242,743 |
Impairment loss in non-consolidated companies | - |  |  | (34,041 | )
Dividends and distributions declared | (69,216 | ) |  | (64,189 | )
Acquisition of non-consolidated companies | 22,661 |  |  | - |
Decrease due to step-acquisition | (23,453 | ) |  | - |
(Decrease) / increase in equity reserves and others | (52,046 | ) |  | 5,023 |
At the end of the year | 1,608,804 |  |  | 1,540,646 |
Disclosure of detailed information about principal non-consolidated companies [text block] |
|  | % ownership at December 31, |  |  | Book value at December 31, |
Company | Country of incorporation | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
a) Ternium (*) | Luxembourg | 11.46% |  |  | 11.46% |  |  | 1,430,616 |  |  | 1,363,607 |
b) Usiminas (**) | Brazil | 3.96% |  |  | 3.07% |  |  | 123,654 |  |  | 109,534 |
c) Techgen | Mexico | 22.00% |  |  | 22.00% |  |  | 53,556 |  |  | 41,506 |
d) Global Pipe Company (***) | Saudi Arabia | 57.30% |  |  | 35.00% |  |  | - |  |  | 23,022 |
Others |  |  |  |  |  |  |  | 978 |  |  | 2,977 |
|  |  |  |  |  |  |  | 1,608,804 |  |  | 1,540,646 |
(*)Including treasury shares. (**)At December 31, 2023 the voting rights were 6.76% and at December 31, 2022 were 5.19%. (***)Consolidated as from May 17, 2023.
Ternium S.A. [member] |
Disclosure of unconsolidated structured entities [line items] |
Disclosure of detailed information about selected financial information [text block] |
| Ternium |
| 2023 |  |  | 2022 |
Non-current assets | 12,148,560 |  |  | 8,647,510 |
Current assets | 12,030,544 |  |  | 8,844,038 |
Total assets | 24,179,104 |  |  | 17,491,548 |
Non-current liabilities | 3,566,643 |  |  | 1,506,325 |
Current liabilities | 3,800,602 |  |  | 2,216,832 |
Total liabilities | 7,367,245 |  |  | 3,723,157 |
Total equity | 16,811,859 |  |  | 13,768,391 |
Non-controlling interests | 4,393,264 |  |  | 1,922,434 |
Revenues | 17,610,092 |  |  | 16,414,466 |
Gross profit | 3,559,355 |  |  | 3,927,184 |
Net income for the year attributable to shareholders' equity | 676,043 |  |  | 1,767,516 |
Usiminas [member] |
Disclosure of unconsolidated structured entities [line items] |
Disclosure of detailed information about selected financial information [text block] |
| Usiminas |
| 2023 |  |  | 2022 |
Non-current assets | 4,591,763 |  |  | 3,764,453 |
Current assets | 3,589,129 |  |  | 3,901,844 |
Total assets | 8,180,892 |  |  | 7,666,297 |
Non-current liabilities | 1,672,676 |  |  | 1,671,249 |
Current liabilities | 1,139,031 |  |  | 1,033,524 |
Total liabilities | 2,811,706 |  |  | 2,704,773 |
Total equity | 5,369,186 |  |  | 4,961,524 |
Non-controlling interests | 556,418 |  |  | 523,741 |
Revenues | 5,531,985 |  |  | 6,296,964 |
Gross profit | 357,845 |  |  | 1,110,439 |
Net income for the year attributable to shareholders' equity | 278,402 |  |  | 319,979 |

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