Condensed Consolidated Statements of Comprehensive Income - USD ($) shares in Millions, $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues
Total revenues		$ 672	$ 652	$ 2,034	$ 2,051
Operating expenses
Other property-level		54	54	152	157
Management fees		32	32	101	103
Casualty loss (gain) and impairment loss, net		8	(1)	8	(1)
Depreciation and amortization		61	69	184	208
Corporate general and administrative		14	16	47	47
Acquisition costs		59		65
Other		23	19	61	54
Total expenses		635	570	1,776	1,742
Gain on sales of assets, net		1	2	20	98
Operating income		38	84	278	407
Interest income		2	2	5	4
Interest expense		(33)	(32)	(98)	(94)
Equity in earnings from investments in affiliates		3	4	18	16
Loss on foreign currency transactions		(2)	(1)	(2)	(4)
Other gain (loss), net		1	(2)	1	106
Income before income taxes		9	55	202	435
Income tax expense				(12)	(13)
Net income		9	55	190	422
Net income attributable to noncontrolling interests		(4)	(3)	(7)	(4)
Net income attributable to stockholders		5	52	183	418
Other comprehensive (loss) income, net of tax expense:
Currency translation adjustment, net of tax expense of $0, $1, $0, $2		(3)	(1)	(2)	36
Total other comprehensive (loss) income		(3)	(1)	(2)	36
Comprehensive income		6	54	188	458
Comprehensive income attributable to noncontrolling interests		(4)	(3)	(7)	(4)
Comprehensive income attributable to stockholders		$ 2	$ 51	$ 181	$ 454
Earnings per share:
Earnings per share - Basic	[1]	$ 0.02	$ 0.26	$ 0.90	$ 2.04
Earnings per share - Diluted	[1]	$ 0.02	$ 0.26	$ 0.90	$ 2.04
Weighted average shares outstanding - Basic		206	200	203	204
Weighted average shares outstanding - Diluted		207	201	204	205
Rooms [Member]
Revenues
Total revenues		$ 431	$ 429	$ 1,271	$ 1,298
Operating expenses
Expenses		114	113	334	337
Food and Beverage [Member]
Revenues
Total revenues		156	144	534	532
Operating expenses
Expenses		117	111	371	368
Ancillary Hotel [Member]
Revenues
Total revenues		63	60	170	168
Other [Member]
Revenues
Total revenues		22	19	59	53
Other Departmental and Support [Member]
Operating expenses
Expenses		$ 153	$ 157	$ 453	$ 469

[1] Per share amounts are calculated based on unrounded numbers and are calculated independently for each period presented.