Schedule III - Real Estate and Accumulated Depreciation - Changes in Accumulated Depreciation 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, Accumulated Depreciation [Roll Forward]
Balance at beginning of period	$ 2,712	$ 2,504	$ 2,241
Additions during period:
Depreciation expense	254	267	280
Transfer to real estate assets	0	0	30
Deductions during period:
Dispositions, including casualty losses and impairment loss on planned dispositions	(68)	(59)	(47)
Derecognition of assets	(278)	0	0
Balance at end of period	$ 2,620	$ 2,712	$ 2,504
Number of hotels transitioned to third-party management | hotel			4