Summary of Hotel Revenues by Market Locations (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation Of Revenue [Line Items]
Total revenues	$ 1,620	$ 5,469	$ 5,524
New York
Disaggregation Of Revenue [Line Items]
Total revenues	111	560	744
San Francisco/San Jose
Disaggregation Of Revenue [Line Items]
Total revenues	134	519	488
San Diego
Disaggregation Of Revenue [Line Items]
Total revenues	124	516	523
Maui/Oahu
Disaggregation Of Revenue [Line Items]
Total revenues	122	400	366
Washington, D.C. (Central Business District)
Disaggregation Of Revenue [Line Items]
Total revenues	66	341	330
Florida Gulf Coast
Disaggregation Of Revenue [Line Items]
Total revenues	207	338	285
Phoenix
Disaggregation Of Revenue [Line Items]
Total revenues	141	311	298
Boston
Disaggregation Of Revenue [Line Items]
Total revenues	41	303	304
Orlando
Disaggregation Of Revenue [Line Items]
Total revenues	67	221	217
Los Angeles
Disaggregation Of Revenue [Line Items]
Total revenues	59	187	188
Miami
Disaggregation Of Revenue [Line Items]
Total revenues	106	178	55
Chicago
Disaggregation Of Revenue [Line Items]
Total revenues	26	165	186
Atlanta
Disaggregation Of Revenue [Line Items]
Total revenues	52	159	158
Northern Virginia
Disaggregation Of Revenue [Line Items]
Total revenues	34	135	158
Seattle
Disaggregation Of Revenue [Line Items]
Total revenues	21	120	129
Houston
Disaggregation Of Revenue [Line Items]
Total revenues	46	116	118
New Orleans
Disaggregation Of Revenue [Line Items]
Total revenues	38	106	103
San Antonio
Disaggregation Of Revenue [Line Items]
Total revenues	25	105	116
Orange County
Disaggregation Of Revenue [Line Items]
Total revenues	26	104	119
Jacksonville
Disaggregation Of Revenue [Line Items]
Total revenues	54	100	98
Denver
Disaggregation Of Revenue [Line Items]
Total revenues	24	93	89
Philadelphia
Disaggregation Of Revenue [Line Items]
Total revenues	24	90	88
Other
Disaggregation Of Revenue [Line Items]
Total revenues	52	214	257
United States
Disaggregation Of Revenue [Line Items]
Total revenues	1,600	5,381	5,417
International
Disaggregation Of Revenue [Line Items]
Total revenues	$ 20	$ 88	$ 107