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Note 23 - Non-current allowances and provisions (Tables)

12 Months Ended

Dec. 31, 2020

Disclosure of Non-current allowances and provisions [Abstract]

Disclosure of detailed information about non-current allowances and provisions from liabilities [text block]

Liabilities

			Year ended December 31,
		2020				2019
(all amounts in thousands of U.S. dollars)
Values at the beginning of the year			54,599				36,089
Translation differences			(5,739	)			(1,571	)
Increase due to business combinations			26,542				-
Additional provisions			478				19,904
Reclassifications			557				5,641
Used			(3,219	)			(5,464	)
Values at the end of the year			73,218				54,599

X

- Definition

The disclosure of detailed information about non-current allowances and provisions from liabilities.

+ References

No definition available.

+ Details

Name:	ts_DisclosureOfDetailedInformationAboutNoncurrentAllowancesAndProvisionsFromLiabilitiesTextBlock
Namespace Prefix:	ts_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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