Consolidated Statements of Comprehensive (Loss) Income - USD ($) shares in Millions, $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues
Total revenues		$ 852	$ 2,844	$ 2,737
Operating expenses
Other property-level		258	219	207
Management fees		30	139	137
Impairment loss and casualty (gain) loss, net		696	(18)	(1)
Depreciation and amortization		298	264	277
Corporate general and administrative		63	62	65
Acquisition costs		10	70
Other		36	78	73
Total expenses		2,116	2,437	2,329
Gain on sales of assets, net		62	19	96
Operating (loss) income		(1,202)	426	504
Interest income		2	6	6
Interest expense		(213)	(140)	(127)
Equity in (losses) earnings from investments in affiliates		(22)	14	18
Other (loss) gain, net		(15)	45	99
(Loss) Income before income taxes		(1,450)	351	500
Income tax benefit (expense)		6	(35)	(23)
Net (loss) income		(1,444)	316	477
Net loss (income) attributable to noncontrolling interests		4	(10)	(5)
Net (loss) income attributable to stockholders		(1,440)	306	472
Other comprehensive (loss) income, net of tax expense:
Currency translation adjustment, net of tax expense of $0, $4 and $0		4	3	39
Change in fair value of interest rate swap, net of tax expense of $0		(5)
Total other comprehensive (loss) income		(1)	3	39
Comprehensive (loss) income		(1,445)	319	516
Comprehensive loss (income) attributable to noncontrolling interests		4	(10)	(5)
Comprehensive (loss) income attributable to stockholders		$ (1,441)	$ 309	$ 511
(Loss) Earnings per share:
(Loss) Earnings per share - Basic	[1]	$ (6.11)	$ 1.44	$ 2.32
(Loss) Earnings per share - Diluted	[1]	$ (6.11)	$ 1.44	$ 2.31
Weighted average shares outstanding - Basic		236	212	203
Weighted average shares outstanding - Diluted		236	213	204
Rooms [Member]
Revenues
Total revenues		$ 526	$ 1,764	$ 1,710
Operating expenses
Expenses		193	467	449
Food and Beverage [Member]
Revenues
Total revenues		189	743	713
Operating expenses
Expenses		173	518	495
Ancillary Hotel [Member]
Revenues
Total revenues		108	260	242
Other [Member]
Revenues
Total revenues		29	77	72
Other Departmental and Support [Member]
Operating expenses
Expenses		$ 359	$ 638	$ 627

[1] Per share amounts are calculated based on unrounded numbers.