Goodwill - Summary of Goodwill Activity by Reportable Segments (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2020
Goodwill [Line Items]
Balance as of December 31, 2019			$ 840,000,000
Impairment	$ (3,000,000)	$ 0	(3,000,000)
Balance as of September 30, 2020	843,000,000		843,000,000
Operating Segments
Goodwill [Line Items]
Balance as of December 31, 2019			840,000,000
Impairment			(3,000,000)
Disposition			(6,000,000)
Foreign currency translation adjustments			6,000,000
Other adjustments			6,000,000
Balance as of September 30, 2020	843,000,000		843,000,000
Operating Segments | Hotels, Media & Platform
Goodwill [Line Items]
Balance as of December 31, 2019			405,000,000
Re-allocation of goodwill			2,000,000
Balance as of September 30, 2020	407,000,000		407,000,000
Operating Segments | Experiences & Dining Segment
Goodwill [Line Items]
Balance as of December 31, 2019			333,000,000
Foreign currency translation adjustments			7,000,000
Other adjustments			6,000,000
Balance as of September 30, 2020	346,000,000		346,000,000
Operating Segments | Other
Goodwill [Line Items]
Balance as of December 31, 2019			102,000,000
Re-allocation of goodwill			(2,000,000)
Impairment			(3,000,000)
Disposition			(6,000,000)
Foreign currency translation adjustments			(1,000,000)
Balance as of September 30, 2020	$ 90,000,000		$ 90,000,000