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Note 31 - Related party transactions - Transactions Carried Out With Related Parties (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure of transactions between related parties [line items] |  |  |
Revenue, related party transactions | $ 252,336 | $ 289,083 | $ 362,629
Purchases of goods and services, related party transactions | 321,783 | 548,763 | 758,443
Income from joint ventures in related party transactions | 6,218 | 5,645 | 3,804
Amounts receivable (payable), related party transactions | 83,857 | 73,088 |
Finance lease liabilities from associated companies | (1,026) | (1,459) |
Finance lease liabilities from other related parties | (260) | (375) |
Financial debt related parties | (1,286) | (1,834) |
Techint Holdings S.àr.l. [Member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Dividend distributed related party transactions | 478,115 | 385,347 | 321,122
Associates [member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Sales of goods to related parties | 37,551 | 56,152 | 100,019
Sales of services to related parties | 3,456 | 1,564 | 1,472
Purchases of goods to related parties | 154,772 | 324,556 | 555,257
Purchases of services to related parties | 17,544 | 13,349 | 13,759
Divicend received related party transactions | 71,211 | 69,216 | 64,189
Receivables from non-consolidated parties | 3,133 | 7,589 |
Payables to non-consolidated parties | (23,531) | (21,012) |
Third party [member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Sales of goods to related parties | 83,250 | 121,679 | 151,884
Sales of services to related parties | 127,940 | 109,553 | 109,123
Purchases of goods to related parties | 70,425 | 61,366 | 51,040
Purchases of services to related parties | 55,576 | 76,751 | 36,767
Receivables from non-consolidated parties | 47,713 | 62,986 |
Payables to non-consolidated parties | (12,165) | (11,488) |
Joint ventures where entity is venturer [member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Sales of services to related parties | 139 | 135 | 131
Purchases of goods to related parties | 23,466 | 72,741 | 101,620
Income from joint ventures in related party transactions | 6,218 | 5,645 | $ 3,804
Receivables from non-consolidated parties | 68,759 | 63,374 |
Payables to non-consolidated parties | $ (52) | $ (28,361) |

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- Definition The amounts payable resulting from related party transactions. [Refer: Total for all related parties [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2024-01-01 -Paragraph 20 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2024-en-r&anchor=para_20&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2024-01-01 -Paragraph 18 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2024-en-r&anchor=para_18_b&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amounts receivable resulting from related party transactions. [Refer: Total for all related parties [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2024-01-01 -Paragraph 20 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2024-en-r&anchor=para_20&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2024-01-01 -Paragraph 18 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2024-en-r&anchor=para_18_b&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The amount of goods purchased by the entity in related party transactions. [Refer: Total for all related parties [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 24 -IssueDate 2024-01-01 -Paragraph 21 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2024-en-r&anchor=para_21_a&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of property and other assets purchased by the entity in related party transactions. [Refer: Total for all related parties [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 24 -IssueDate 2024-01-01 -Paragraph 21 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2024-en-r&anchor=para_21_b&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of revenue arising from the rendering of services in related party transactions. [Refer: Revenue; Total for all related parties [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 24 -IssueDate 2024-01-01 -Paragraph 21 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2024-en-r&anchor=para_21_c&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of revenue arising from the sale of goods in related party transactions. [Refer: Revenue; Total for all related parties [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 24 -IssueDate 2024-01-01 -Paragraph 21 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2024-en-r&anchor=para_21_a&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amounts receivable (payable) resulting from related party transactions. + References No definition available. + Details
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- Definition The dividends distributed in related party transactions. + References No definition available. + Details
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Balance Type: | debit
Period Type: | duration

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- Definition The dividend received in related party transactions. + References No definition available. + Details
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Balance Type: | credit
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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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Balance Type: | credit
Period Type: | instant

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- Definition Represents the amount of finance lease liabilities from other related parties as of the specified date. + References No definition available. + Details
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Balance Type: | credit
Period Type: | instant

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- Definition Represents the amount of financial debt with related parties. + References No definition available. + Details
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Balance Type: | credit
Period Type: | instant

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- Definition The income from joint ventures in related party transactions. + References No definition available. + Details
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Balance Type: | credit
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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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Balance Type: | debit
Period Type: | duration

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- Definition The amount of revenue arising from related party transactions. + References No definition available. + Details
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- Details
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