Acquisitions and Dispositions - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended		21 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2019	May 05, 2019
Business Acquisition [Line Items]
Acquisition costs	$ 9	$ 59	$ 10	$ 65
Operating income	(206)	38	(1,043)	278
Net (loss) income attributable to stockholders	$ (276)	5	(1,223)	183
Gross proceeds on sale of hotel portfolio properties			208	236
Net gain on selling cost of hotel portfolio properties			64	20
Hilton Sao Paulo Morumbi [Member]
Business Acquisition [Line Items]
Reclassification of currency translation adjustment from accumulated other comprehensive loss to earnings on disposition of hotel portfolio properties			$ 7
Chesapeake Lodging Trust [Member]
Business Acquisition [Line Items]
Percentage of ownership interest in properties			100.00%
Total consideration			$ 2,000
Business acquisition, consideration transferred number of shares issued			37.8
Business acquisition,par value per common share	$ 25.88		$ 25.88			$ 0.01
Cash issued for acquisition			$ 1,013
Acquisition costs	$ 9	$ 59		$ 65
Revenue recognized					$ 23
Operating income					5
Net (loss) income attributable to stockholders					$ 4
Chesapeake Lodging Trust [Member] | Common Stock [member]
Business Acquisition [Line Items]
Shares issued for acquisition			$ 978