XML 191 R149.htm IDEA: XBRL DOCUMENT
v3.21.1

Note 25 - Derivative Financial Instruments - Hedge Reserve Evolution (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Disclosure of detailed information about hedging instruments [line items] |  |
Hedge accounting reserve | $ 2,600 |
Hedge accounting reserve | (4,800) | $ 2,600
Cash flow hedges [member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Hedge accounting reserve | 2,591 | (916)
Movements | (7,362) | 3,507
Hedge accounting reserve | (4,771) | 2,591
Foreign exchange derivatives contracts [member] | Cash flow hedges [member] |  |
Disclosure of detailed information about hedging instruments [line items] |  |
Hedge accounting reserve | 2,591 | (916)
Movements | (7,362) | 3,507
Hedge accounting reserve | $ (4,771) | $ 2,591

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_DisclosureOfDetailedInformationAboutHedgingInstrumentsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The gain (loss) on the change in fair value of the hedged item used as a basis for recognising hedge ineffectiveness. Hedge ineffectiveness is the extent to which the changes in the fair value or the cash flows of the hedging instrument are greater or less than those on the hedged item. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 24B -Subparagraph a -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_24B_a_iv&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 24B -Subparagraph b -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_24B_b_i&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_GainLossOnChangeInFairValueOfHedgedItemUsedAsBasisForRecognisingHedgeIneffectiveness
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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
- Details
Name: | ifrs-full_TypesOfHedgesAxis=ifrs-full_CashFlowHedgesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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