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Note 14 - Investments in non-consolidated companies - Summary of Investments in Non-consolidated Companies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Reconciliation of changes in investments in subsidiaries joint ventures and associates [abstract]
At the beginning of the year	$ 1,540,646	$ 1,383,774
Translation differences	110,801	7,336	$ (11,085)
Equity in earnings of non-consolidated companies	79,411	242,743
Impairment loss in non-consolidated companies		(34,041)
Dividends and distributions declared	(69,216)	(64,189)
Acquisition of non-consolidated companies	22,661
Decrease due to step-acquisition	(23,453)
(Decrease) / increase in equity reserves and others	(52,046)	5,023
At the end of the year	$ 1,608,804	$ 1,540,646	$ 1,383,774

X

- Definition

The amount of investments in subsidiaries, joint ventures and associates in an entity's separate financial statements. [Refer: Associates [member]; Joint ventures [member]; Subsidiaries [member]; Investments in subsidiaries reported in separate financial statements]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2023-01-01
-Paragraph 10
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2023-en-r&anchor=para_10&doctype=Standard
-URIDate 2023-03-23

+ Details

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Balance Type:	debit
Period Type:	instant

X

- Definition

Represents the amount of divdends declared by nonconsolidated companies.

+ 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 impairment loss recognised in profit or loss in non-consolidated companies.

+ 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 income (loss) from equity method investments in non-consolidated companies.

+ References

No definition available.

+ Details

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Namespace Prefix:	ts_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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X

- Definition

The amount of decrease in investments in subsidiaries, joint ventures and associates during the period due to step-acquisition.

+ References

No definition available.

+ Details

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X

- Definition

Represents the increase in investments in subsidiaries, joint ventures and associates during the period due to business combinations.

+ References

No definition available.

+ Details

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X

- Definition

The amount of other comprehensive income (loss), net of tax, attributable to non-consolidated companies related to exchange differences when financial statements of foreign operations are translated.

+ References

No definition available.

+ Details

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Namespace Prefix:	ts_
Data Type:	xbrli:monetaryItemType
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X

- References

No definition available.

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X

- Definition

The entity's share of the other comprehensive income of associates and joint ventures accounted for using the equity method, including dividends declared, net of tax.

+ References

No definition available.

+ Details

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