Schedule III - Real Estate and Accumulated Depreciation - Change in Accumulated Depreciation (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract]
Balance at beginning of period		$ 2,504	$ 2,241	$ 2,038
Additions during period:
Depreciation expense		267	280	294
Transfer to real estate assets	[1]	0	30
Deductions during period:
Dispositions Including Casualty Losses		(59)	(47)	(89)
Foreign exchange effect		0		(2)
Balance at end of period		$ 2,712	$ 2,504	$ 2,241

[1] During 2021, four of our hotels that were previously managed by us were transitioned to a third-party hotel management company.