v3.26.1
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)