XML 60 R45.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Accounting Policies (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Statement Line Items [Line Items] |
Disclosure of detailed information about the estimated useful lives of property, plant and equipment [text block] |
| Land | No Depreciation
| Buildings and improvements | 30-50 years
| Plant and production equipment | 10-40 years
| Vehicles, furniture and fixtures, and other equipment | 4-10 years

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- Definition The disclosure of detailed information about the estimated useful lives of property, plant and equipment. + References No definition available. + Details
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Namespace Prefix: | ts_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | ts_StatementLineItems
Namespace Prefix: | ts_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration