Summary of Hotel Revenues by Market Locations (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation Of Revenue [Line Items]
Total revenues	$ 1,052	$ 1,390
San Diego
Disaggregation Of Revenue [Line Items]
Total revenues	87	129
San Francisco/San Jose
Disaggregation Of Revenue [Line Items]
Total revenues	106	135
New York
Disaggregation Of Revenue [Line Items]
Total revenues	77	103
Maui/Oahu
Disaggregation Of Revenue [Line Items]
Total revenues	93	104
Washington, D.C. (Central Business District)
Disaggregation Of Revenue [Line Items]
Total revenues	54	75
Florida Gulf Coast
Disaggregation Of Revenue [Line Items]
Total revenues	109	121
Phoenix
Disaggregation Of Revenue [Line Items]
Total revenues	83	109
Boston
Disaggregation Of Revenue [Line Items]
Total revenues	35	54
Orlando
Disaggregation Of Revenue [Line Items]
Total revenues	53	70
Los Angeles
Disaggregation Of Revenue [Line Items]
Total revenues	35	45
Chicago
Disaggregation Of Revenue [Line Items]
Total revenues	16	27
Miami
Disaggregation Of Revenue [Line Items]
Total revenues	60	42
Atlanta
Disaggregation Of Revenue [Line Items]
Total revenues	30	46
Northern Virginia
Disaggregation Of Revenue [Line Items]
Total revenues	21	36
Seattle
Disaggregation Of Revenue [Line Items]
Total revenues	18	24
Houston
Disaggregation Of Revenue [Line Items]
Total revenues	25	31
Orange County
Disaggregation Of Revenue [Line Items]
Total revenues	17	30
San Antonio
Disaggregation Of Revenue [Line Items]
Total revenues	17	31
New Orleans
Disaggregation Of Revenue [Line Items]
Total revenues	24	30
Jacksonville
Disaggregation Of Revenue [Line Items]
Total revenues	19	28
Denver
Disaggregation Of Revenue [Line Items]
Total revenues	15	19
Philadelphia
Disaggregation Of Revenue [Line Items]
Total revenues	13	18
Other
Disaggregation Of Revenue [Line Items]
Total revenues	31	64
United States
Disaggregation Of Revenue [Line Items]
Total revenues	1,038	1,371
International
Disaggregation Of Revenue [Line Items]
Total revenues	$ 14	$ 19