XML 177 R139.htm IDEA: XBRL DOCUMENT v3.19.1

Note 24 - Contingencies, Commitments and Restrictions On the Distribution of Profits (Details Textual) R$ / shares in Units, t in Thousands, $ in Thousands, R$ in Millions, $ in Millions					12 Months Ended	36 Months Ended
	Oct. 09, 2018 USD ($)	Jul. 01, 2017 USD ($)	Jun. 30, 2017 USD ($)	Sep. 01, 2013 R$ / shares shares	Dec. 31, 2018 USD ($) t	Dec. 31, 2018 USD ($) t	Dec. 31, 2018 BRL (R$) t	Oct. 10, 2018 USD ($)	Oct. 10, 2018 BRL (R$)	Aug. 30, 2018 USD ($)	Aug. 30, 2018 MXN ($)	Jul. 07, 2016 USD ($)	Jan. 22, 2016 USD ($)
Equity in accordance with Luxembourg law [member]
Statement Line Items [Line Items]
Distributable retained earnings					$ 17,049,171	$ 17,049,171
Techgen s.a. [member]
Statement Line Items [Line Items]
Proportion of ownership interest in associate					22.00%
Term of supply contract						25 years
Proportion of corporate guarantee covering obligations					22.00%	22.00%	22.00%
Confab [member] | Chubb [member]
Statement Line Items [Line Items]
Payments for settlement	$ 3,500
Settlement, amount ordered to pay								$ 23,200	R$ 89.8
Confab [member] | Veracel Celulose S.A. [member]
Statement Line Items [Line Items]
Settlement, amount ordered to pay, insurance deductible					$ 14,900	$ 14,900	R$ 57.8
Settlement, amount ordered to pay, damages					12,800	12,800	49.5
Tribunal de Contas da Uniao [member] | Legal proceedings contingent liability [member]
Statement Line Items [Line Items]
Estimated financial effect of contingent liabilities					$ 7,000	7,000	R$ 27.0
Transportadora de Gas del Norte S.A. [member]
Statement Line Items [Line Items]
Term of supply contract					9 years
Purchase commitments					$ 40,100	40,100
Praxair S.A. [member]
Statement Line Items [Line Items]
Term of supply contract					14 years
Purchase commitments					$ 57,700	57,700
Graftech [member]
Statement Line Items [Line Items]
Purchase commitments					55,000	55,000
Vale International S.A. [member]
Statement Line Items [Line Items]
Purchase commitments					$ 136,900	$ 136,900
Percent of annual iron ore needs supplied					70.00%	70.00%	70.00%
Maximum number of tons of pellets supplied annually | t					770	770	770
Canadian National Railway [member]
Statement Line Items [Line Items]
Purchase commitments					$ 22,800	$ 22,800
Air Liquide Mexico S. de R.L. de C.V. [member]
Statement Line Items [Line Items]
Purchase commitments					20,800	20,800
Long term contracts with several customers and parent companies guarantees [member]
Statement Line Items [Line Items]
Performance Guarantees					$ 2,100,000	$ 2,100,000
CONFAB INDUSTRIAL S.A. and subsidiaries [member] | Companhia Siderúrgica Nacional [member]
Statement Line Items [Line Items]
Tag-along tender offer to non-controlling interests, percentage				80.00%
Tag-along tender offer to non-controlling interests | R$ / shares				R$ 28.80
Tag-along tender offer to non-controlling interests, shares | shares				182,609,851
CONFAB INDUSTRIAL S.A. and subsidiaries [member] | Companhia Siderúrgica Nacional [member] | Legal proceedings contingent liability [member]
Statement Line Items [Line Items]
Tag-along tender offer to non-controlling interests, contingent liability				17.90%
TENARIS GLOBAL SERVICES S.A. and subsidiaries [member] | Petroamazonas [member] | Legal proceedings contingent liability [member]
Statement Line Items [Line Items]
Estimated financial effect of contingent liabilities													$ 22,500
TENARIS BAY CITY, INC. [member] | Contractor [member] | Legal proceedings contingent liability [member]
Statement Line Items [Line Items]
Total excess cost of project		$ 48,000	$ 90,000
SIDERCA S.A.I.C. and subsidiaries [member] | Argentine state-owned company [member] | Legal proceedings contingent liability [member]
Statement Line Items [Line Items]
Estimated financial effect of contingent liabilities												$ 25,400
Segeta [member] | Mexican tax authorities [member] | Legal proceedings contingent liability [member]
Statement Line Items [Line Items]
Estimated financial effect of contingent liabilities										$ 78,000	$ 1,540
Tamsa [member] | Mexican tax authorities [member] | Legal proceedings contingent liability [member]
Statement Line Items [Line Items]
Estimated financial effect of contingent liabilities										$ 190,000	$ 3,749
Ternium s.a. [member]
Statement Line Items [Line Items]
Proportion of ownership interest in associate					11.46%
Ternium s.a. [member] | Techgen s.a. [member]
Statement Line Items [Line Items]
Proportion of ownership interest in associate					48.00%

X

- Definition

The amount of the estimated financial effect of contingent liabilities. [Refer: Contingent liabilities [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 37
-IssueDate 2017-01-01
-Paragraph 86
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=37&date=2017-03-01&anchor=para_86_a&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_EstimatedFinancialEffectOfContingentLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
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 2017-01-01
-Paragraph 17
-Subparagraph b
-Clause iii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2017-03-01&anchor=para_17_b_iii&doctype=Standard
-URIDate 2017-03-09

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2017-01-01
-Paragraph 16
-Subparagraph b
-Clause iii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2017-03-01&anchor=para_16_b_iii&doctype=Standard
-URIDate 2017-03-09

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2017-01-01
-Paragraph 21
-Subparagraph a
-Clause iv
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2017-03-01&anchor=para_21_a_iv&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_ProportionOfOwnershipInterestInAssociate
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

A component of equity representing the entity's cumulative distributable retained earnings.

+ References

No definition available.

+ Details

Name:	ts_DistributableRetainedEarnings
Namespace Prefix:	ts_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The maximum number of metric tons of pellets supplied annually.

+ References

No definition available.

+ Details

Name:	ts_MaximumNumberOfTonsOfPelletsSuppliedAnnually
Namespace Prefix:	ts_
Data Type:	num:massItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The amount of payments made for settlements.

+ References

No definition available.

+ Details

Name:	ts_PaymentsForSettlement
Namespace Prefix:	ts_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The percent of annual iron ore needs that will be supplied.

+ References

No definition available.

+ Details

Name:	ts_PercentOfAnnualIronOreNeedsSupplied
Namespace Prefix:	ts_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Represents the amount of performance guarantees.

+ References

No definition available.

+ Details

Name:	ts_PerformanceGuarantees
Namespace Prefix:	ts_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Represents the proportion of a corporate guarantee that covers obligations made under a syndicated loan agreement.

+ References

No definition available.

+ Details

Name:	ts_ProportionOfCorporateGuaranteeCoveringObligations
Namespace Prefix:	ts_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The amount liable for purchase commitments.

+ References

No definition available.

+ Details

Name:	ts_PurchaseCommitments
Namespace Prefix:	ts_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of liability associated with amount ordered to pay in a settlement.

+ References

No definition available.

+ Details

Name:	ts_SettlementAmountOrderedToPay
Namespace Prefix:	ts_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of settlement ordered to be pay, related to damages.

+ References

No definition available.

+ Details

Name:	ts_SettlementAmountOrderedToPayDamages
Namespace Prefix:	ts_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount ordered to pay in a settlement, related to the insurance deductible.

+ References

No definition available.

+ Details

Name:	ts_SettlementAmountOrderedToPayInsuranceDeductible
Namespace Prefix:	ts_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

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

X

- Definition

The required tag-along tender offer to non-controlling interests in an acquisition.

+ References

No definition available.

+ Details

Name:	ts_TagalongTenderOfferToNoncontrollingInterests
Namespace Prefix:	ts_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The percentage of the tag-along tender offer to non-controlling interests accounted for as a contingent liability.

+ References

No definition available.

+ Details

Name:	ts_TagalongTenderOfferToNoncontrollingInterestsContingentLiability
Namespace Prefix:	ts_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The required Tag-along tender offer to non-controlling interests in an acquisition expressed as a percentage of the price per share paid in such acquisition.

+ References

No definition available.

+ Details

Name:	ts_TagalongTenderOfferToNoncontrollingInterestsPercentage
Namespace Prefix:	ts_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The required tag-along tender offer to non-controlling interests in an acquisition expressed in shares.

+ References

No definition available.

+ Details

Name:	ts_TagalongTenderOfferToNoncontrollingInterestsShares
Namespace Prefix:	ts_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The term of a supply contract.

+ References

No definition available.

+ Details

Name:	ts_TermOfSupplyContract
Namespace Prefix:	ts_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The total excess cost of a project.

+ References

No definition available.

+ Details

Name:	ts_TotalExcessCostOfProject
Namespace Prefix:	ts_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	ifrs-full_ComponentsOfEquityAxis=ts_EquityInAccordanceWithLuxembourgLawMember
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:	dei_LegalEntityAxis=ts_ConfabMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CounterpartyNameAxis=ts_ChubbMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CounterpartyNameAxis=ts_VeracelCeluloseSaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CounterpartiesAxis=ts_TribunalDeContasDaUniaoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfContingentLiabilitiesAxis=ifrs-full_LegalProceedingsContingentLiabilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CounterpartiesAxis=ts_TransportadoraDeGasDelNorteSaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CounterpartiesAxis=ts_PraxairSAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CounterpartiesAxis=ts_GraftechMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CounterpartiesAxis=ts_ValeInternationalSAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CounterpartiesAxis=ts_CanadianNationalRailwayMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CounterpartiesAxis=ts_AirLiquideMexicoSDeRLDeCVMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CounterpartiesAxis=ts_LongTermContractsWithSeveralCustomersAndParentCompaniesGuaranteesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=ts_ConfabIndustrialSaAndSubsidiariesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CounterpartiesAxis=ts_CompanhiaSiderrgicaNacionalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=ts_TenarisGlobalServicesSaAndSubsidiariesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CounterpartiesAxis=ts_PetroamazonasMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=ts_TenarisBayCityIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CounterpartiesAxis=ts_ContractorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=ts_SidercaSaicAndSubsidiariesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CounterpartiesAxis=ts_ArgentineStateownedCompanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=ts_SegetaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CounterpartiesAxis=ts_MexicanTaxAuthoritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=ts_TamsaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=ts_TerniumSAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: