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Note 6 - Other operating income and expenses (Details Textual) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)
Disclosure of detailed information about other operating income and expenses [line items]
Insurance recovery	$ 7.0
Brazil
Disclosure of detailed information about other operating income and expenses [line items]
Recovery of legal proceedings	$ 17.6

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

Name:	ts_DisclosureOfDetailedInformationAboutOtherOperatingIncomeAndExpensesLineItems
Namespace Prefix:	ts_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of recovery of insurance included in miscellaneous other operating income.

+ References

No definition available.

+ Details

Name:	ts_MiscellaneousOtherOperatingIncomeRecoveryOfInsurance
Namespace Prefix:	ts_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of recovery of legal proceedings included in miscellaneous other operating income.

+ References

No definition available.

+ Details

Name:	ts_MiscellaneousOtherOperatingIncomeRecoveryOfLegalProceedings
Namespace Prefix:	ts_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	ifrs-full_GeographicalAreasAxis=country_BR
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: