Commitments and Contingencies - Other Legal Proceedings, Claims and Investigations (Detail)	9 Months Ended
Sep. 30, 2015 Defendant LegalMatter
Commitments and Contingencies Disclosure [Abstract]
Current docket of active and inactive cases nationwide relating to alleged exposure to asbestos from our product categories \| LegalMatter	500
Number of defendants in many asbestos related cases \| Defendant	100

Current docket of active and inactive cases nationwide relating to alleged exposure to asbestos from our product categories.

No definition available.

Name:	ten_CurrentDocketOfActiveAndInactiveCasesNationwideRelatingToAllegedExposureToAsbestosFromOurProductCategories
Namespace Prefix:	ten_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration