Other Non-Current Assets - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2012
Other Assets Noncurrent [Abstract]
Other non-current assets reclassified as customer loyalty payments within other intangible assets	$ 68

Intangible Assets Reclassified From Other Noncurrent Assets To Intangible Assets

No definition available.

Name:	tvpl_IntangibleAssetsReclassifiedFromOtherNoncurrentAssetsToIntangibleAssets
Namespace Prefix:	tvpl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration