XML 160 R118.htm IDEA: XBRL DOCUMENT
v3.21.1

Note 13 - Investments in Non-consolidated Companies - Principal Non-consolidated Companies (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of unconsolidated structured entities [line items] |  |  |  |
Value |  | $ 957,352 | $ 879,965 | $ 805,568
Ternium S.A. [member] |  |  |  |
Disclosure of unconsolidated structured entities [line items] |  |  |  |
Percentage of ownership |  | 11.46% |  |
Value |  | $ 830,000 |  |
Ternium S.A. [member] | LUXEMBOURG |  |  |  |
Disclosure of unconsolidated structured entities [line items] |  |  |  |
Percentage of ownership | [1] | 11.46% | 11.46% |
Value | [1] | $ 830,028 | $ 751,105 |
Usiminas [member] |  |  |  |
Disclosure of unconsolidated structured entities [line items] |  |  |  |
Value |  | $ 65,100 |  |
Usiminas [member] | BRAZIL |  |  |  |
Disclosure of unconsolidated structured entities [line items] |  |  |  |
Percentage of ownership | [2] | 3.07% | 3.07% |
Value | [2] | $ 65,144 | $ 74,593 |
Techgen s.a. [member] |  |  |  |
Disclosure of unconsolidated structured entities [line items] |  |  |  |
Percentage of ownership |  | 22.00% |  |
Value |  | $ 19,500 |  |
Techgen s.a. [member] | MEXICO |  |  |  |
Disclosure of unconsolidated structured entities [line items] |  |  |  |
Percentage of ownership |  | 22.00% | 22.00% |
Value |  | $ 19,536 | $ 9,888 |
Global Pipe Company [Member] |  |  |  |
Disclosure of unconsolidated structured entities [line items] |  |  |  |
Percentage of ownership |  | 35.00% |  |
Value |  | $ 23,400 |  |
Global Pipe Company [Member] | SAUDI ARABIA |  |  |  |
Disclosure of unconsolidated structured entities [line items] |  |  |  |
Percentage of ownership |  | 35.00% | 35.00% |
Value |  | $ 23,421 | $ 22,550 |
Other [member] |  |  |  |
Disclosure of unconsolidated structured entities [line items] |  |  |  |
Percentage of ownership |  |  |  |
Value |  | $ 19,223 | $ 21,829 |
[1] | Including treasury shares.
[2] | At December 31, 2020 and 2019 the voting rights were 5.19%.

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfUnconsolidatedStructuredEntitiesLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2019-01-01 -Paragraph 10 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2019-en-r&anchor=para_10&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_InvestmentsInSubsidiariesJointVenturesAndAssociates
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The proportion of ownership interest in an associate attributable to the entity. [Refer: Associates [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2019-01-01 -Paragraph 17 -Subparagraph b -Clause iii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2019-en-r&anchor=para_17_b_iii&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2019-01-01 -Paragraph 16 -Subparagraph b -Clause iii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2019-en-r&anchor=para_16_b_iii&doctype=Standard -URIDate 2019-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2019-01-01 -Paragraph 21 -Subparagraph a -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2019-en-r&anchor=para_21_a_iv&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_ProportionOfOwnershipInterestInAssociate
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_SignificantInvestmentsInAssociatesAxis=ts_TerniumSAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=country_LU
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SignificantInvestmentsInAssociatesAxis=ts_UsiminasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | ifrs-full_SignificantInvestmentsInAssociatesAxis=ts_TechgenSAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=country_MX
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SignificantInvestmentsInAssociatesAxis=ts_GlobalPipeCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_GeographicalAreasAxis=country_SA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SignificantInvestmentsInAssociatesAxis=ts_OtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |