Summary of Hotel Revenues by Market Locations (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation Of Revenue [Line Items]
Total revenues	$ 649	$ 103	$ 1,048	$ 1,155
Florida Gulf Coast
Disaggregation Of Revenue [Line Items]
Total revenues	85	18	166	127
Maui/Oahu
Disaggregation Of Revenue [Line Items]
Total revenues	98	1	142	94
Phoenix
Disaggregation Of Revenue [Line Items]
Total revenues	63	8	117	91
Miami
Disaggregation Of Revenue [Line Items]
Total revenues	56	5	112	65
San Diego
Disaggregation Of Revenue [Line Items]
Total revenues	41	5	55	92
Orlando
Disaggregation Of Revenue [Line Items]
Total revenues	36	3	45	56
Washington, D.C. (Central Business District)
Disaggregation Of Revenue [Line Items]
Total revenues	20	3	43	57
Jacksonville
Disaggregation Of Revenue [Line Items]
Total revenues	29	9	43	28
Los Angeles/Orange County
Disaggregation Of Revenue [Line Items]
Total revenues	29	7	39	59
San Francisco/San Jose
Disaggregation Of Revenue [Line Items]
Total revenues	25	6	36	112
New York
Disaggregation Of Revenue [Line Items]
Total revenues	25	16	36	93
Houston
Disaggregation Of Revenue [Line Items]
Total revenues	19	4	32	29
Atlanta
Disaggregation Of Revenue [Line Items]
Total revenues	18	3	29	33
San Antonio/Austin
Disaggregation Of Revenue [Line Items]
Total revenues	18	1	26	18
Northern Virginia
Disaggregation Of Revenue [Line Items]
Total revenues	12	1	19	22
Philadelphia
Disaggregation Of Revenue [Line Items]
Total revenues	11	1	16	14
Chicago
Disaggregation Of Revenue [Line Items]
Total revenues	9	2	13	18
Boston
Disaggregation Of Revenue [Line Items]
Total revenues	10	1	13	36
New Orleans
Disaggregation Of Revenue [Line Items]
Total revenues	10		13	24
Denver
Disaggregation Of Revenue [Line Items]
Total revenues	9	2	12	17
Seattle
Disaggregation Of Revenue [Line Items]
Total revenues	5		7	18
Other
Disaggregation Of Revenue [Line Items]
Total revenues	18	5	29	36
United States
Disaggregation Of Revenue [Line Items]
Total revenues	646	101	1,043	1,139
International
Disaggregation Of Revenue [Line Items]
Total revenues	$ 3	$ 2	$ 5	$ 16