XML 164 R145.htm IDEA: XBRL DOCUMENT
v3.20.1

Note 24 - Derivative Financial Instruments - Foreign Exchange Derivative Contracts and Hedge Accounting (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Statement Line Items [Line Items] |  |  |
Fair value of derivatives | $ 18,115 | $ (2,753) |
Hedge accounting reserve | 2,600 | (900) |
Cash flow hedges [member] |  |  |
Statement Line Items [Line Items] |  |  |
Fair value of derivatives | 18,115 | (2,753) |
Hedge accounting reserve | 2,591 | (916) | $ (240)
Foreign exchange contract, purchase currency MXN, sell currency USD [member] | Cash flow hedges [member] |  |  |
Statement Line Items [Line Items] |  |  |
Fair value of derivatives | 18,999 | 888 |
Hedge accounting reserve | 404 | (411) |
Foreign exchange contract, purchase currency USD, sell currency MXN [member] | Cash flow hedges [member] |  |  |
Statement Line Items [Line Items] |  |  |
Fair value of derivatives | (576) |  |
Hedge accounting reserve |  |  |
Foreign exchange contract, purchase currency ARS, sell currency USD [member] | Cash flow hedges [member] |  |  |
Statement Line Items [Line Items] |  |  |
Fair value of derivatives |  | (6,542) |
Hedge accounting reserve |  | (895) |
Foreign exchange contract, purchase currency EUR, sell currency USD [member] | Cash flow hedges [member] |  |  |
Statement Line Items [Line Items] |  |  |
Fair value of derivatives | 588 | 203 |
Hedge accounting reserve |  |  |
Foreign exchange contract, purchase currency USD, sell currency EUR [member] | Cash flow hedges [member] |  |  |
Statement Line Items [Line Items] |  |  |
Fair value of derivatives |  |  |
Hedge accounting reserve | 2,149 |  |
Foreign exchange contract, purchase currency USD, sell currency KWD [member] | Cash flow hedges [member] |  |  |
Statement Line Items [Line Items] |  |  |
Fair value of derivatives | (234) | (131) |
Hedge accounting reserve |  |  |
Foreign exchange contract, purchase currency JPY, sell currency USD [member] | Cash flow hedges [member] |  |  |
Statement Line Items [Line Items] |  |  |
Fair value of derivatives | (190) | 271 |
Hedge accounting reserve |  |  |
Foreign exchange contract, purchase currency USD, sell currency ARS [member] | Cash flow hedges [member] |  |  |
Statement Line Items [Line Items] |  |  |
Fair value of derivatives | 103 | 522 |
Hedge accounting reserve | 38 | 390 |
Foreign exchange contract, purchase currency USD, sell currency BRL [member] | Cash flow hedges [member] |  |  |
Statement Line Items [Line Items] |  |  |
Fair value of derivatives | (200) | 2,089 |
Hedge accounting reserve |  |  |
Foreign exchange contract, purchase currency USD, sell currency GPB [member] | Cash flow hedges [member] |  |  |
Statement Line Items [Line Items] |  |  |
Fair value of derivatives | (345) | (23) |
Hedge accounting reserve |  |  |
Foreign exchange contract, Other [member] | Cash flow hedges [member] |  |  |
Statement Line Items [Line Items] |  |  |
Fair value of derivatives | (30) | (30) |
Hedge accounting reserve |  |  |

X
- Definition A component of equity representing the reserve of cash flow hedges in relation to continuing hedges. [Refer: Reserve of cash flow hedges] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 24B -Subparagraph b -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_24B_b_ii&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_ReserveOfCashFlowHedgesContinuingHedges
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of financial assets (liabilities) classified as derivative instruments. + References No definition available. + Details
Name: | ts_DerivativeFinancialAssetsLiabilities
Namespace Prefix: | ts_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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
- Details
Name: | ifrs-full_TypesOfHedgesAxis=ifrs-full_CashFlowHedgesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_HedgingInstrumentsAxis=ts_ForeignExchangeContractPurchaseCurrencyMxnSellCurrencyUsdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_HedgingInstrumentsAxis=ts_ForeignExchangeContractPurchaseCurrencyUsdSellCurrencyMxnMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_HedgingInstrumentsAxis=ts_ForeignExchangeContractPurchaseCurrencyArsSellCurrencyUsdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_HedgingInstrumentsAxis=ts_ForeignExchangeContractPurchaseCurrencyEurSellCurrencyUsdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_HedgingInstrumentsAxis=ts_ForeignExchangeContractPurchaseCurrencyUsdSellCurrencyEurMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_HedgingInstrumentsAxis=ts_ForeignExchangeContractPurchaseCurrencyUsdSellCurrencyKwdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_HedgingInstrumentsAxis=ts_ForeignExchangeContractPurchaseCurrencyJpySellCurrencyUsdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_HedgingInstrumentsAxis=ts_ForeignExchangeContractPurchaseCurrencyUsdSellCurrencyArsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_HedgingInstrumentsAxis=ts_ForeignExchangeContractPurchaseCurrencyUsdSellCurrencyBrlMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_HedgingInstrumentsAxis=ts_ForeignExchangeContractPurchaseCurrencyUsdSellCurrencyGpbMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_HedgingInstrumentsAxis=ts_ForeignExchangeContractOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |