Commitments and Contingencies - Additional Information (Details) (Maximum)	9 Months Ended
Sep. 30, 2014
Maximum
Commitment And Contingencies [Line Items]
Criteria percentage of damages claims	10.00%

Damages expressed as a percentage of total current assets in determining requirement for disclosure.

No definition available.

Name:	trip_CriteriaPercentageOfDamagesClaims
Namespace Prefix:	trip_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration