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Note 9 - Income tax (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of geographical areas [line items]
Charge related to withholding taxes for intra group international operations	$ 164.3	$ 21.0	$ 22.6
Current tax impact arising due to application of pillar two rules	0.0
Deferred Tax Income Recognised In Profit Or Loss	550.3
Argentina
Disclosure of geographical areas [line items]
Corporate income tax rate			35.00%	25.00%
Argentina and Mexico
Disclosure of geographical areas [line items]
Tax inflation adjustments	$ 349.0	$ 250.4	$ 113.2

X

- Definition

The applicable income tax rate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2023-01-01
-Paragraph 81
-Subparagraph c
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2023-en-r&anchor=para_81_c_ii&doctype=Standard
-URIDate 2023-03-23

+ Details

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Balance Type:	na
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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

Represents the amount of charge related to withholding taxes for intra group international operations during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	ts_
Data Type:	xbrli:monetaryItemType
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X

- Definition

The amount of current tax impact arising due to the application of Pillar Two rules.

+ References

No definition available.

+ Details

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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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Data Type:	xbrli:monetaryItemType
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X

- Definition

The amount represents the difference between the after tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to expenses not deductible in determining profit (loss).

+ References

No definition available.

+ Details

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- Details

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X

- Details

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