XML 205 R163.htm IDEA: XBRL DOCUMENT
v3.21.1

Note 36 - Closure of Prudential Steel LTD (Details) $ in Millions | Dec. 31, 2020 USD ($)
--- | ---
Prudential Steel Limited [Member] | ALGOMA TUBES INC. [member] |
Disclosure of information about unconsolidated structured entities controlled by investment entity [line items] |
Additional investment will be made | $ 72

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

X
- Definition The amount of additional investment will be made for repositioning of the industrial activities. + References No definition available. + Details
Name: | ts_AdditionalInvestmentWillBeMade
Namespace Prefix: | ts_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | ifrs-full_UnconsolidatedStructuredEntitiesControlledByInvestmentEntityAxis=ts_PrudentialSteelLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SignificantInvestmentsInSubsidiariesAxis=ts_AlgomaTubesIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |