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Note 22 - Deferred tax assets and liabilities (Details Textual) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Unused tax losses for which no deferred tax asset recognised | $ 2,683,500 |  |
Deferred tax income recognised in profit or loss | 186,000 | $ 550,300 |
Deferred tax liability (asset) | $ (327,357) | (158,010) | $ 60,199
LUXEMBOURG |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Maximum carry forward period for losses incurred | 17 years |  |
LUXEMBOURG | Unused tax losses [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Deferred tax liability (asset) | $ 623,800 | 550,300 |
USA |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Deferred tax assets related to taxable losses of subsidiaries | $ 79,400 | $ 77,900 |

X
- Definition The amount of deferred tax liabilities or assets. [Refer: Deferred tax liabilities; Deferred tax assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2024-01-01 -Paragraph 81 -Subparagraph g -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81_g_i&doctype=Standard -URIDate 2024-03-27 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- 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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X
- Definition The amount of unused tax losses for which no deferred tax asset is recognised in the statement of financial position. [Refer: Unused tax losses [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2024-01-01 -Paragraph 81 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81_e&doctype=Standard -URIDate 2024-03-27 + Details
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X
- Definition Represents the amount of deferred tax assets related to taxable losses of the entity's subsidiaries. + References No definition available. + Details
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Namespace Prefix: | ts_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of income related to the recognition deferred tax assets due to previous years’ tax losses carried forward. + References No definition available. + Details
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Namespace Prefix: | ts_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the maximum period over which the entity can carry forward incurred losses. + References No definition available. + Details
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X
- Details
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X
- Details
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X
- Details
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