Stock Based Awards and Other Equity Instruments - Summary of Status and Activity for Stock Option Awards Relating to Common Stock (Parenthetical) (Detail)	Sep. 30, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Number of options not converted in shares	168,795

The number of options not converted into shares and returned to the authorized but unissued pool due to net share settlement to cover the aggregate exercise price and the minimum amount of required employee withholding taxes.

No definition available.

Name:	trip_NumberOfOptionsNotConvertedIntoShares
Namespace Prefix:	trip_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant