Segment Reporting - Condensed Statement of Operations (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Total contract revenues									$ 8,588	$ 8,230	$ 4,689
Real estate leases									150
Other revenues									4	161	179
Net revenues	$ 2,169	$ 2,236	$ 2,222	$ 2,115	$ 2,115	$ 2,185	$ 2,119	$ 1,972	8,742	8,391	4,868
Depreciation and amortization									1,021	1,145	626
Income from operations	$ 177	$ (68)	$ 269	$ 240	$ 100	$ 232	$ 282	$ 125	618	739	537
Interest expense									(1,370)	(1,346)	(773)
Gain on deconsolidation of subsidiaries									0	0	31
Restructuring and support expenses											(2,028)
Loss on extinguishment of debt									0	(1)	(232)
Other income/(loss)									(587)	791	95
Income tax benefit									141	121	1,995
Variable lease income									71
Operating Segments | Las Vegas
Segment Reporting Information [Line Items]
Total contract revenues									3,780	3,607	2,737
Real estate leases									139
Other revenues									0	146	165
Net revenues									3,919	3,753	2,902
Depreciation and amortization									495	582	420
Income from operations									560	716	549
Interest expense									(330)	(327)	(65)
Gain on deconsolidation of subsidiaries											0
Restructuring and support expenses											0
Loss on extinguishment of debt										0	(4)
Other income/(loss)									(1)	3	4
Income tax benefit									0	0	0
Operating Segments | Other U.S.
Segment Reporting Information [Line Items]
Total contract revenues									4,215	4,036	1,748
Real estate leases									10
Other revenues									0	11	10
Net revenues									4,225	4,047	1,758
Depreciation and amortization									455	501	186
Income from operations									525	434	199
Interest expense									(572)	(556)	(153)
Gain on deconsolidation of subsidiaries											31
Restructuring and support expenses											(177)
Loss on extinguishment of debt										0	(13)
Other income/(loss)									1	2	1
Income tax benefit									0	0	2
Operating Segments | All Other
Segment Reporting Information [Line Items]
Total contract revenues									598	593	210
Real estate leases									1
Other revenues									4	5	5
Net revenues									603	598	215
Depreciation and amortization									71	62	20
Income from operations									(467)	(411)	(211)
Interest expense									(468)	(463)	(555)
Gain on deconsolidation of subsidiaries											0
Restructuring and support expenses											(1,851)
Loss on extinguishment of debt										(1)	(215)
Other income/(loss)									(587)	786	90
Income tax benefit									141	121	1,993
Intersegment Eliminations
Segment Reporting Information [Line Items]
Total contract revenues									(5)	(6)	(6)
Real estate leases									0
Other revenues									0	(1)	(1)
Net revenues									(5)	(7)	(7)
Depreciation and amortization									0	0	0
Income from operations									0	0	0
Interest expense									0	0	0
Gain on deconsolidation of subsidiaries											0
Restructuring and support expenses											0
Loss on extinguishment of debt										0	0
Other income/(loss)									0	0	0
Income tax benefit									0	0	0
Casino
Segment Reporting Information [Line Items]
Total contract revenues									4,448	4,247	2,168
Net revenues									4,448	4,247	2,168
Casino | Operating Segments | Las Vegas
Segment Reporting Information [Line Items]
Total contract revenues									1,149	1,104	864
Casino | Operating Segments | Other U.S.
Segment Reporting Information [Line Items]
Total contract revenues									3,053	2,889	1,188
Casino | Operating Segments | All Other
Segment Reporting Information [Line Items]
Total contract revenues									246	254	116
Casino | Intersegment Eliminations
Segment Reporting Information [Line Items]
Total contract revenues									0	0	0
Food and beverage
Segment Reporting Information [Line Items]
Total contract revenues									1,618	1,574	982
Net revenues									1,618	1,574	982
Food and beverage | Operating Segments | Las Vegas
Segment Reporting Information [Line Items]
Total contract revenues									1,017	975	700
Food and beverage | Operating Segments | Other U.S.
Segment Reporting Information [Line Items]
Total contract revenues									576	571	274
Food and beverage | Operating Segments | All Other
Segment Reporting Information [Line Items]
Total contract revenues									25	28	8
Food and beverage | Intersegment Eliminations
Segment Reporting Information [Line Items]
Total contract revenues									0	0	0
Rooms
Segment Reporting Information [Line Items]
Total contract revenues									1,581	1,519	1,074
Net revenues									1,581	1,519	1,074
Rooms | Operating Segments | Las Vegas
Segment Reporting Information [Line Items]
Total contract revenues									1,177	1,117	872
Rooms | Operating Segments | Other U.S.
Segment Reporting Information [Line Items]
Total contract revenues									401	399	201
Rooms | Operating Segments | All Other
Segment Reporting Information [Line Items]
Total contract revenues									3	3	1
Rooms | Intersegment Eliminations
Segment Reporting Information [Line Items]
Total contract revenues									0	0	0
Management fees
Segment Reporting Information [Line Items]
Total contract revenues									59	60	12
Net revenues									59	60	12
Management fees | Operating Segments | Las Vegas
Segment Reporting Information [Line Items]
Total contract revenues									0	0	0
Management fees | Operating Segments | Other U.S.
Segment Reporting Information [Line Items]
Total contract revenues									0	0	0
Management fees | Operating Segments | All Other
Segment Reporting Information [Line Items]
Total contract revenues									60	63	15
Management fees | Intersegment Eliminations
Segment Reporting Information [Line Items]
Total contract revenues									(1)	(3)	(3)
Reimbursed management costs
Segment Reporting Information [Line Items]
Total contract revenues									212	202	48
Net revenues									212	202	48
Reimbursed management costs | Operating Segments | Las Vegas
Segment Reporting Information [Line Items]
Total contract revenues									0	0	1
Reimbursed management costs | Operating Segments | Other U.S.
Segment Reporting Information [Line Items]
Total contract revenues									2	2	1
Reimbursed management costs | Operating Segments | All Other
Segment Reporting Information [Line Items]
Total contract revenues									210	200	46
Reimbursed management costs | Intersegment Eliminations
Segment Reporting Information [Line Items]
Total contract revenues									0	0	0
Entertainment and other
Segment Reporting Information [Line Items]
Total contract revenues									670	628	405
Entertainment and other | Operating Segments | Las Vegas
Segment Reporting Information [Line Items]
Total contract revenues									437	411	300
Entertainment and other | Operating Segments | Other U.S.
Segment Reporting Information [Line Items]
Total contract revenues									183	175	84
Entertainment and other | Operating Segments | All Other
Segment Reporting Information [Line Items]
Total contract revenues									54	45	24
Entertainment and other | Intersegment Eliminations
Segment Reporting Information [Line Items]
Total contract revenues									$ (4)	$ (3)	$ (3)