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Note 31 - Related party transactions - Transactions Carried Out With Related Parties (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Disclosure of transactions between related parties [line items] |  |  |
Revenue, related party transactions | $ 267,518 | $ 252,336 | $ 289,083
Purchases of goods and services, related party transactions | 348,144 | 321,783 | 548,763
Income from joint ventures in related party transactions | 5,924 | 6,218 | 5,645
Amounts receivable (payable), related party transactions | 82,262 | 83,857 |
Finance lease liabilities from associated companies | (857) | (1,026) |
Finance lease liabilities from other related parties | (1,589) | (260) |
Financial debt related parties | (2,446) | (1,286) |
Techint Holdings S.àr.l. [Member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Dividend distributed related party transactions | 606,564 | 478,115 | 385,347
Associates [member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Sales of goods to related parties | 16,373 | 37,551 | 56,152
Sales of services to related parties | 5,208 | 3,456 | 1,564
Purchases of goods to related parties | 183,968 | 154,772 | 324,556
Purchases of services to related parties | 16,676 | 17,544 | 13,349
Divicend received related party transactions | 62,022 | 71,211 | 69,216
Receivables from non-consolidated parties | 4,641 | 3,133 |
Payables to non-consolidated parties | (22,214) | (23,531) |
Third party [member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Sales of goods to related parties | 117,918 | 83,250 | 121,679
Sales of services to related parties | 127,875 | 127,940 | 109,553
Purchases of goods to related parties | 30,037 | 70,425 | 61,366
Purchases of services to related parties | 50,081 | 55,576 | 76,751
Receivables from non-consolidated parties | 45,476 | 47,713 |
Payables to non-consolidated parties | (8,196) | (12,165) |
Joint ventures where entity is venturer [member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Sales of services to related parties | 144 | 139 | 135
Purchases of goods to related parties | 67,382 | 23,466 | 72,741
Income from joint ventures in related party transactions | 5,924 | 6,218 | $ 5,645
Receivables from non-consolidated parties | 69,447 | 68,759 |
Payables to non-consolidated parties | $ (6,892) | $ (52) |

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- Definition Represents the amount of finance lease liabilities from associated companies as of the specified date. + References No definition available. + Details
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- Definition The income from joint ventures in related party transactions. + References No definition available. + Details
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- Definition The amount of purchases of goods and services in related party transactions. + References No definition available. + Details
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- Definition The amount of revenue arising from related party transactions. + References No definition available. + Details
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