Acquisitions, Dispositions and Assets Held for Sale - Schedule of Unaudited Condensed Pro-forma Financial Information (Detail) - Chesapeake Lodging Trust [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Total revenues	$ 3,250	$ 3,297
Operating income	504	608
Net income	$ 359	$ 531