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Note 35 - Subsequent Events (Details Textual) - Acquisition of IPSCO [member] - Major business combination [member] $ in Millions | Jan. 02, 2020 USD ($)
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Statement Line Items [Line Items] |
Percentage of voting equity interests acquired | 100.00%
Cash transferred | $ 1,067
Master distribution agreement, term (Year) | 6 years
Master distribution agreement, term, available extension (Month) | 1 year

X
- Definition The fair value, at acquisition date, of cash transferred as consideration in a business combination. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2019-01-01 -Paragraph B64 -Subparagraph f -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2019-en-r&anchor=para_B64_f_i&doctype=Appendix&subtype=B -URIDate 2019-03-27 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The percentage of voting equity interests acquired in a business combination. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2019-01-01 -Paragraph B64 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2019-en-r&anchor=para_B64_c&doctype=Appendix&subtype=B -URIDate 2019-03-27 + Details
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Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Represents the term of a master distribution agreement, wherein the acquirer is the exclusive distributor of products. + References No definition available. + Details
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Namespace Prefix: | ts_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Represents the term by which the master distribution agreement term may be extended at the election of the seller of the acquired entity. + References No definition available. + Details
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Namespace Prefix: | ts_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |