Revenue - Schedule of Revenue Components (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue [Line Items]
Total revenues	$ 72	$ 219	$ 218	$ 427
Rooms
Revenue [Line Items]
Total revenues	70	215	213	419
Other
Revenue [Line Items]
Total revenues	1	2	2	3
Total lease revenues
Revenue [Line Items]
Total revenues	71	217	215	422
Customer revenues
Revenue [Line Items]
Total revenues	$ 1	$ 2	$ 3	$ 5