Segment Reporting - Condensed Statement of Operations (Details) - USD ($) $ in Millions		3 Months Ended								12 Months Ended
		Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		$ 2,115	$ 2,185	$ 2,119	$ 1,972	$ 1,901	$ 993	$ 1,008	$ 966	$ 8,391		$ 4,868		$ 3,877
Depreciation and amortization										1,145		626		439
Income from operations		$ 100	$ 232	$ 282	$ 125	$ 154	$ 84	$ 149	$ 150	739		537		226
Interest expense										(1,346)		(773)		(599)
Gain on deconsolidation of subsidiaries										0		31		0
Restructuring and support expenses and other												(2,028)		(5,729)
Gain (Loss) on Extinguishment of Debt										(1)		(232)		0
Other income/(loss)										791	[1]	95	[1]	(29)
Income tax benefit/(provision)	[2],[3]									121		1,995		(327)
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										598		215		55
Depreciation and amortization										62		20		5
Income from operations										(411)		(211)		(463)
Interest expense										(463)		(555)		(548)
Gain on deconsolidation of subsidiaries												0
Restructuring and support expenses and other												(1,851)		(5,729)
Gain (Loss) on Extinguishment of Debt										(1)		(215)
Other income/(loss)										786	[1]	90	[1]	(29)
Income tax benefit/(provision)	[2],[3]									121		1,993		(328)
Operating Segments [Member] | Las Vegas, NV [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										3,753		2,902		2,613
Depreciation and amortization										582		420		344
Income from operations										716		549		526
Interest expense										(327)		(65)		(21)
Gain on deconsolidation of subsidiaries												0
Restructuring and support expenses and other												0		0
Gain (Loss) on Extinguishment of Debt										0		(4)
Other income/(loss)										3	[1]	4	[1]	0
Income tax benefit/(provision)	[2],[3]									0		0		1
Operating Segments [Member] | Other U.S. [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										4,047		1,758		1,209
Depreciation and amortization										501		186		90
Income from operations										434		199		163
Interest expense										(556)		(153)		(30)
Gain on deconsolidation of subsidiaries												31
Restructuring and support expenses and other												(177)		0
Gain (Loss) on Extinguishment of Debt										0		(13)
Other income/(loss)										2	[1]	1	[1]	0
Income tax benefit/(provision)	[2],[3]									0		2		0
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										(7)		(7)		0
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 and other												0		0
Gain (Loss) on Extinguishment of Debt										0		0
Other income/(loss)										0	[1]	0	[1]	0
Income tax benefit/(provision)	[2],[3]									0		0		0
Casino [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										4,247		2,168		1,608
Casino [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										254		116		41
Casino [Member] | Operating Segments [Member] | Las Vegas, NV [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										1,104		864		765
Casino [Member] | Operating Segments [Member] | Other U.S. [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										2,889		1,188		802
Casino [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										0		0		0
Food and Beverage [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										1,574		982		822
Food and Beverage [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										28		8		2
Food and Beverage [Member] | Operating Segments [Member] | Las Vegas, NV [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										975		700		630
Food and Beverage [Member] | Operating Segments [Member] | Other U.S. [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										571		274		190
Food and Beverage [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										0		0		0
Occupancy [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										1,519		1,074		950
Occupancy [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										3		1		0
Occupancy [Member] | Operating Segments [Member] | Las Vegas, NV [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										1,117		872		800
Occupancy [Member] | Operating Segments [Member] | Other U.S. [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										399		201		150
Occupancy [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										0		0		0
License and Service [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										60		12		0
License and Service [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										63		15
License and Service [Member] | Operating Segments [Member] | Las Vegas, NV [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										0		0
License and Service [Member] | Operating Segments [Member] | Other U.S. [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										0		0
License and Service [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										(3)		(3)
Service, Other [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										202		48		0
Service, Other [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										200		46
Service, Other [Member] | Operating Segments [Member] | Las Vegas, NV [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										0		1
Service, Other [Member] | Operating Segments [Member] | Other U.S. [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										2		1
Service, Other [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										0		0
Entertainment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										628		405		319
Entertainment [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										45		24		7
Entertainment [Member] | Operating Segments [Member] | Las Vegas, NV [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										411		300		257
Entertainment [Member] | Operating Segments [Member] | Other U.S. [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										175		84		55
Entertainment [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										(3)		(3)		0
Product and Service, Other [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										789		584		497
Revenues										161		179		178
Product and Service, Other [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Revenues										5		5		5
Product and Service, Other [Member] | Operating Segments [Member] | Las Vegas, NV [Member]
Segment Reporting Information [Line Items]
Revenues										146		165		161
Product and Service, Other [Member] | Operating Segments [Member] | Other U.S. [Member]
Segment Reporting Information [Line Items]
Revenues										11		10		12
Product and Service, Other [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues										(1)		(1)		0
Accounting Standards Update 2014-09 [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										8,230		4,689		3,699
Accounting Standards Update 2014-09 [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										593		210		50
Accounting Standards Update 2014-09 [Member] | Operating Segments [Member] | Las Vegas, NV [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										3,607		2,737		2,452
Accounting Standards Update 2014-09 [Member] | Operating Segments [Member] | Other U.S. [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										4,036		1,748		1,197
Accounting Standards Update 2014-09 [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax										$ (6)		$ (6)		$ 0

[1] (2) Amounts include changes in fair value of the derivative liability related to the conversion option of the CEC Convertible Notes and the disputed claims liability as well as interest and dividend income.

[2] (1) Taxes are recorded at the consolidated level and not estimated or recorded to our Las Vegas and Other U.S. segments.

[3] (1) Taxes are recorded at the consolidated level and not estimated or recorded to our Las Vegas and Other U.S. segments.