Other Current Assets - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended	12 Months Ended
Jun. 30, 2013	Dec. 31, 2012
Prepaid Expense And Other Assets Current [Abstract]
Other current assets reclassified as customer loyalty payments within other intangible assets		$ 50
Assets held for sale	12 months

Intangible Assets Reclassified From Other Assets To Intangible Assets

No definition available.

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