Segment Reporting Segment Reporting - Condensed Statements of Operations - By Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Segment Reporting Information [Line Items]
Net revenues	$ 1,972	$ 966
Depreciation and amortization	280	102
Income/(loss) from operations	125	150
Interest expense	(330)	(147)
Restructuring and support expenses and other	184	(464)
Income tax provision	(13)	(47)
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Net revenues	142	12
Depreciation and amortization	17	2
Income/(loss) from operations	(109)	(31)
Interest expense	(114)	(135)
Restructuring and support expenses and other	180	(464)
Income tax provision	(13)	(47)
Operating Segments | Las Vegas, NV [Member]
Segment Reporting Information [Line Items]
Net revenues	906	674
Depreciation and amortization	142	79
Income/(loss) from operations	148	152
Interest expense	(78)	(5)
Restructuring and support expenses and other	2	0
Income tax provision	0	0
Operating Segments | Other U.S. [Member]
Segment Reporting Information [Line Items]
Net revenues	926	280
Depreciation and amortization	121	21
Income/(loss) from operations	86	29
Interest expense	(138)	(7)
Restructuring and support expenses and other	2	0
Income tax provision	0	0
Intersegment Elimination
Segment Reporting Information [Line Items]
Net revenues	(2)	0
Depreciation and amortization	0	0
Income/(loss) from operations	0	0
Interest expense	0	0
Restructuring and support expenses and other	0	0
Income tax provision	$ 0	$ 0