Commitments and Contingencies - Additional Information (Details)	3 Months Ended
Mar. 31, 2015
Commitments And Contingencies Disclosure [Abstract]
Criteria percentage of damages claims	10.00%

Threshold percentage of damages sought to consolidated assets requiring disclosure.

No definition available.

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