XML 119 R81.htm IDEA: XBRL DOCUMENT
v3.19.1

Financial Risk Management - Proportions of Variable-rate and Fixed-rate Debt (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Statement Line Items [Line Items] |  |  |  |
Significant borrowings as of closing date |  | $ 539,007 | $ 965,859 |
Fixed interest rate [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Significant borrowings as of closing date |  | $ 520,471 | $ 946,215 | [1]
Percentage | [1] | 97.00% | 98.00% |
Floating interest rate [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Significant borrowings as of closing date |  | $ 18,536 | $ 19,644 |
Percentage |  | 3.00% | 2.00% |
[1] | Out of the $520 million fixed rate borrowings $493 million are short-term.

X
- Definition The amount of outstanding funds that the entity is obligated to repay. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_55&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_Borrowings
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References No definition available. + Details
Name: | ts_ConcentrationRiskPercentage
Namespace Prefix: | ts_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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_TypesOfInterestRatesAxis=ifrs-full_FixedInterestRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfInterestRatesAxis=ifrs-full_FloatingInterestRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |