Segment Reporting Segment Reporting - Condensed Statements of Operations - By Segment (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Segment Reporting Information [Line Items]
Net revenues		$ 2,119	$ 1,008	$ 4,091	$ 1,974
Depreciation and amortization		268	96	548	198
Income/(loss) from operations		282	149	407	299
Interest expense		(334)	(142)	(664)	(289)
Restructuring and support expenses and other (1)	[1],[2]	45	(1,407)	229	(1,871)
Income tax benefit (2)	[3],[4]	36	(32)	23	(79)
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Net revenues		147	18	294	34
Depreciation and amortization		15	1	32	3
Income/(loss) from operations		(95)	(54)	(204)	(85)
Interest expense		(115)	(132)	(229)	(267)
Restructuring and support expenses and other (1)	[1],[2]	47	(1,404)	227	(1,868)
Income tax benefit (2)	[3],[4]	36	(32)	23	(79)
Operating Segments | Las Vegas, NV [Member]
Segment Reporting Information [Line Items]
Net revenues		992	684	1,894	1,355
Depreciation and amortization		132	74	274	153
Income/(loss) from operations		246	156	394	308
Interest expense		(80)	(3)	(158)	(8)
Restructuring and support expenses and other (1)	[1],[2]	(2)	(3)	0	(3)
Income tax benefit (2)	[3],[4]	0	0	0	0
Operating Segments | Other U.S. [Member]
Segment Reporting Information [Line Items]
Net revenues		982	307	1,908	586
Depreciation and amortization		121	21	242	42
Income/(loss) from operations		131	47	217	76
Interest expense		(139)	(7)	(277)	(14)
Restructuring and support expenses and other (1)	[1],[2]	0	0	2	0
Income tax benefit (2)	[3],[4]	0	0	0	0
Intersegment Elimination
Segment Reporting Information [Line Items]
Net revenues		(2)	(1)	(5)	(1)
Depreciation and amortization		0	0	0	0
Income/(loss) from operations		0	0	0	0
Interest expense		0	0	0	0
Restructuring and support expenses and other (1)	[1],[2]	0	0	0	0
Income tax benefit (2)	[3],[4]	$ 0	$ 0	$ 0	$ 0

[1] (1) 2018 amount primarily represents a change in fair value of our derivative liability related to the conversion option of the CEC Convertible Notes; 2017 amount primarily represents CEC’s costs in connection with the restructuring of CEOC.

[2] (2) 2018 amount primarily represents a change in fair value of our derivative liability related to the conversion option of the CEC Convertible Notes; 2017 amount primarily represents CEC’s costs in connection with the restructuring of CEOC.

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

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