Summary of Hotel Revenues by Market Locations (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation Of Revenue [Line Items]
Total revenues	$ 399	$ 1,052
Florida Gulf Coast
Disaggregation Of Revenue [Line Items]
Total revenues	81	109
Miami
Disaggregation Of Revenue [Line Items]
Total revenues	56	60
Phoenix
Disaggregation Of Revenue [Line Items]
Total revenues	54	83
Maui/Oahu
Disaggregation Of Revenue [Line Items]
Total revenues	44	93
Washington, D.C. (Central Business District)
Disaggregation Of Revenue [Line Items]
Total revenues	23	54
San Diego
Disaggregation Of Revenue [Line Items]
Total revenues	14	87
Jacksonville
Disaggregation Of Revenue [Line Items]
Total revenues	14	19
Houston
Disaggregation Of Revenue [Line Items]
Total revenues	13	25
San Francisco/San Jose
Disaggregation Of Revenue [Line Items]
Total revenues	11	106
New York
Disaggregation Of Revenue [Line Items]
Total revenues	11	77
Atlanta
Disaggregation Of Revenue [Line Items]
Total revenues	11	30
Los Angeles/Orange County
Disaggregation Of Revenue [Line Items]
Total revenues	10	52
Orlando
Disaggregation Of Revenue [Line Items]
Total revenues	9	53
San Antonio/Austin
Disaggregation Of Revenue [Line Items]
Total revenues	8	17
Northern Virginia
Disaggregation Of Revenue [Line Items]
Total revenues	7	21
Philadelphia
Disaggregation Of Revenue [Line Items]
Total revenues	5	13
Chicago
Disaggregation Of Revenue [Line Items]
Total revenues	4	16
Boston
Disaggregation Of Revenue [Line Items]
Total revenues	3	35
New Orleans
Disaggregation Of Revenue [Line Items]
Total revenues	3	24
Denver
Disaggregation Of Revenue [Line Items]
Total revenues	3	15
Seattle
Disaggregation Of Revenue [Line Items]
Total revenues	2	18
Other
Disaggregation Of Revenue [Line Items]
Total revenues	11	31
United States
Disaggregation Of Revenue [Line Items]
Total revenues	397	1,038
International
Disaggregation Of Revenue [Line Items]
Total revenues	$ 2	$ 14