Revenue Recognition - Reconciliation of Disaggregated Revenue to Segment Revenue (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation Of Revenue [Line Items]
Total Revenue	[1]	$ 151	$ 428	$ 488	$ 1,225
Hotels, Media & Platform
Disaggregation Of Revenue [Line Items]
Total Revenue	[1]	80	238	287	746
Experiences & Dining Segment
Disaggregation Of Revenue [Line Items]
Total Revenue	[1]	53	141	150	346
Other
Disaggregation Of Revenue [Line Items]
Total Revenue	[1],[2]	18	49	51	133
Tripadvisor-Branded Hotels | Hotels, Media & Platform
Disaggregation Of Revenue [Line Items]
Total Revenue	[1]	67	197	235	624
Tripadvisor-Branded Display and Platform | Hotels, Media & Platform
Disaggregation Of Revenue [Line Items]
Total Revenue	[1]	$ 13	$ 41	$ 52	$ 122

[1] Our revenue is recognized primarily at a point in time for all reported segments.

[2] Other consists of the combination of our Rentals, Flights & Car, Cruises, and Tripadvisor China business units and does not constitute a reportable segment.