Schedule III - Real Estate and Accumulated Depreciation - Changes in Real Estate Rollforward (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($) hotel
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]
Balance at beginning of period	$ 11,008	$ 11,010	$ 11,376
Additions during period:
Capital expenditures	307	188	62
Transfer to real estate assets	0	0	83
Deductions during period:
Dispositions, including casualty losses and impairment loss on planned dispositions	(199)	(190)	(511)
Derecognition of assets	(1,041)	0	0
Balance at end of period	$ 10,075	$ 11,008	$ 11,010
Number of hotels transitioned to third-party management | hotel			4