Revenue Recognition - Reconciliation of Disaggregated Revenue to Segment Revenue (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020
Disaggregation Of Revenue [Line Items]
Total Revenue	[1]	$ 123	$ 278
Hotels, Media & Platform
Disaggregation Of Revenue [Line Items]
Total Revenue	[1]	88	169
Experiences & Dining Segment
Disaggregation Of Revenue [Line Items]
Total Revenue	[1]	28	83
Other
Disaggregation Of Revenue [Line Items]
Total Revenue	[1]	7	26
Tripadvisor-Branded Hotels | Hotels, Media & Platform
Disaggregation Of Revenue [Line Items]
Total Revenue	[1]	74	137
Tripadvisor-Branded Display and Platform | Hotels, Media & Platform
Disaggregation Of Revenue [Line Items]
Total Revenue	[1]	$ 14	$ 32

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