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Note 25 - Current allowances and provisions - Liabilities (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024
Reconciliation of changes in other provisions [abstract] |  |  |
At the beginning of the year |  | $ 119,344 | $ 35,959
Translation differences |  | 12,495 | (20,279)
Decrease due to deconsolidation of subsidiaries |  | (79) |
Changes due to business combinations | [1] |  | 722
Additional provisions |  | 56,814 | 127,494
Reclassifications |  | 2,549 | 9,839
Used |  | (17,971) | (34,391)
At the end of the year |  | 173,152 | 119,344
Sales risks [member] |  |  |
Reconciliation of changes in other provisions [abstract] |  |  |
At the beginning of the year |  | 16,371 | 19,940
Translation differences |  | 694 | (1,301)
Changes due to business combinations | [1] |  |
Additional provisions |  | 42,710 | 21,296
Reclassifications |  |  |
Used |  | (15,484) | (23,564)
At the end of the year |  | 44,291 | 16,371
Other claims and contingencies [member] |  |  |
Reconciliation of changes in other provisions [abstract] |  |  |
At the beginning of the year | [2] | 102,973 | 16,019
Translation differences | [2] | 11,801 | (18,978)
Decrease due to deconsolidation of subsidiaries |  | (79) |
Changes due to business combinations | [1] |  | 722
Additional provisions | [2] | 14,104 | 106,198
Reclassifications | [2] | 2,549 | 9,839
Used | [2] | (2,487) | (10,827)
At the end of the year | [2] | $ 128,861 | $ 102,973
[1] | For the year 2024, related to Mattr’s pipe coating business unit acquisition.
[2] | Other claims and contingencies mainly include lawsuits and other legal proceedings, including employee, tax and environmental-related claims.

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- Definition The increase in other provisions resulting from acquisitions through business combinations. [Refer: Total for all business combinations [member]; Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2025-01-01 -Paragraph 84 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&anchor=para_84&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The decrease in other provisions resulting from the loss of control of a subsidiary. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2025-01-01 -Paragraph 84 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&anchor=para_84&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The increase (decrease) in other provisions resulting from foreign currency exchange rate changes on provisions measured in a currency different from the entity's presentation currency. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2025-01-01 -Paragraph 84 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&anchor=para_84&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The increase (decrease) in other provisions resulting from transfers and changes that the entity does not separately disclose in the same statement or note. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2025-01-01 -Paragraph 84 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&anchor=para_84&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The amount of provisions other than provisions for employee benefits. [Refer: Provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2025-01-01 -Paragraph 84 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2025-en-r&anchor=para_84_a&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph B9 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B9_e&doctype=Appendix&subtype=B -URIDate 2025-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 257 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_257_a&doctype=Standard -URIDate 2025-03-27 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 257 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_257_a&doctype=Standard -URIDate 2025-03-27 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 78 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_78_d&doctype=Standard -URIDate 2025-03-27 + Details
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