Segment Reporting - Condensed Statements of Operations - By Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Total contract revenues	$ 1,799	$ 2,079
Real estate leases	28	35
Other revenues	1	1
Revenues	1,828	2,115
Depreciation and amortization	256	247
Income/(loss) from operations	(66)	240
Interest expense	(333)	(349)
Other income/(loss)	641	(138)
Income tax benefit	(54)	29
Real estate leases revenue	9	14
Casino
Segment Reporting Information [Line Items]
Total contract revenues	958	1,083
Revenues	958	1,083
Food and beverage
Segment Reporting Information [Line Items]
Total contract revenues	330	398
Revenues	330	398
Rooms
Segment Reporting Information [Line Items]
Total contract revenues	317	386
Revenues	317	386
Management fees
Segment Reporting Information [Line Items]
Total contract revenues	9	15
Revenues	9	15
Reimbursed management costs
Segment Reporting Information [Line Items]
Total contract revenues	51	52
Revenues	51	52
Entertainment and other
Segment Reporting Information [Line Items]
Total contract revenues	134	145
Operating Segments | Las Vegas
Segment Reporting Information [Line Items]
Total contract revenues	797	922
Real estate leases	25	33
Other revenues	0	0
Revenues	822	955
Depreciation and amortization	120	128
Income/(loss) from operations	86	226
Interest expense	(82)	(83)
Other income/(loss)	(2)	0
Income tax benefit	0	0
Operating Segments | Las Vegas | Casino
Segment Reporting Information [Line Items]
Total contract revenues	249	274
Operating Segments | Las Vegas | Food and beverage
Segment Reporting Information [Line Items]
Total contract revenues	210	255
Operating Segments | Las Vegas | Rooms
Segment Reporting Information [Line Items]
Total contract revenues	250	299
Operating Segments | Las Vegas | Management fees
Segment Reporting Information [Line Items]
Total contract revenues	0	0
Operating Segments | Las Vegas | Reimbursed management costs
Segment Reporting Information [Line Items]
Total contract revenues	0	0
Operating Segments | Las Vegas | Entertainment and other
Segment Reporting Information [Line Items]
Total contract revenues	88	94
Operating Segments | Other U.S.
Segment Reporting Information [Line Items]
Total contract revenues	871	1,008
Real estate leases	3	2
Other revenues	0	0
Revenues	874	1,010
Depreciation and amortization	115	103
Income/(loss) from operations	(72)	116
Interest expense	(144)	(143)
Other income/(loss)	3	0
Income tax benefit	0	0
Operating Segments | Other U.S. | Casino
Segment Reporting Information [Line Items]
Total contract revenues	655	744
Operating Segments | Other U.S. | Food and beverage
Segment Reporting Information [Line Items]
Total contract revenues	115	137
Operating Segments | Other U.S. | Rooms
Segment Reporting Information [Line Items]
Total contract revenues	66	86
Operating Segments | Other U.S. | Management fees
Segment Reporting Information [Line Items]
Total contract revenues	0	0
Operating Segments | Other U.S. | Reimbursed management costs
Segment Reporting Information [Line Items]
Total contract revenues	1	1
Operating Segments | Other U.S. | Entertainment and other
Segment Reporting Information [Line Items]
Total contract revenues	34	40
Operating Segments | All Other
Segment Reporting Information [Line Items]
Total contract revenues	131	149
Real estate leases	0	0
Other revenues	1	1
Revenues	132	150
Depreciation and amortization	21	16
Income/(loss) from operations	(80)	(102)
Interest expense	(107)	(123)
Other income/(loss)	640	(138)
Income tax benefit	(54)	29
Operating Segments | All Other | Casino
Segment Reporting Information [Line Items]
Total contract revenues	54	65
Operating Segments | All Other | Food and beverage
Segment Reporting Information [Line Items]
Total contract revenues	5	6
Operating Segments | All Other | Rooms
Segment Reporting Information [Line Items]
Total contract revenues	1	1
Operating Segments | All Other | Management fees
Segment Reporting Information [Line Items]
Total contract revenues	9	15
Operating Segments | All Other | Reimbursed management costs
Segment Reporting Information [Line Items]
Total contract revenues	50	51
Operating Segments | All Other | Entertainment and other
Segment Reporting Information [Line Items]
Total contract revenues	12	11
Elimination
Segment Reporting Information [Line Items]
Total contract revenues	0	0
Real estate leases	0	0
Other revenues	0	0
Revenues	0	0
Depreciation and amortization	0	0
Income/(loss) from operations	0	0
Interest expense	0	0
Other income/(loss)	0	0
Income tax benefit	0	0
Elimination | Casino
Segment Reporting Information [Line Items]
Total contract revenues	0	0
Elimination | Food and beverage
Segment Reporting Information [Line Items]
Total contract revenues	0	0
Elimination | Rooms
Segment Reporting Information [Line Items]
Total contract revenues	0	0
Elimination | Management fees
Segment Reporting Information [Line Items]
Total contract revenues	0	0
Elimination | Reimbursed management costs
Segment Reporting Information [Line Items]
Total contract revenues	0	0
Elimination | Entertainment and other
Segment Reporting Information [Line Items]
Total contract revenues	$ 0	$ 0