Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impairment expense	$ 14	$ 260
Sheraton San Diego Hotel Marina | Level 2 | Righ of Use Asset
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impairment expense	$ 14
W New York, W New York - Union Square and Westin New York Grand Central | Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impairment expense		44
Westin New York Grand Central | Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value, net of selling cost		270
Sheraton New York Times Square Hotel | Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impairment expense		216
Fair value of property, following the impairment loss		$ 495