Segment Reporting Segment Reporting - Condensed Statements of Operations - By Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Segment Reporting Information [Line Items]
Other	$ 150	$ 140	$ 428	$ 398
Net revenues	986	986	2,951	2,928
Depreciation and amortization	150	112	348	327
Income/(loss) from operations	86	(44)	401	155
Interest expense	(120)	(147)	(409)	(448)
Restructuring of CEOC and other	(446)	(3,070)	(2,319)	(5,333)
Income tax benefit/(provision)	20	(27)	(83)	(37)
Operating Segments | CERP
Segment Reporting Information [Line Items]
Other	88	85	254	243
Net revenues	582	569	1,698	1,659
Depreciation and amortization	86	63	196	196
Income/(loss) from operations	83	104	311	293
Interest expense	(84)	(99)	(273)	(297)
Restructuring of CEOC and other	1	1	(1)	0
Income tax benefit/(provision)	5	0	(11)	2
Operating Segments | CGP
Segment Reporting Information [Line Items]
Other	66	59	185	167
Net revenues	409	422	1,265	1,283
Depreciation and amortization	64	48	152	131
Income/(loss) from operations	31	(109)	149	(22)
Interest expense	(36)	(49)	(131)	(149)
Restructuring of CEOC and other	25	1	30	2
Income tax benefit/(provision)	0	2	0	6
Other
Segment Reporting Information [Line Items]
Other	2	0	5	3
Net revenues	1	(1)	4	1
Depreciation and amortization	0	1	0	0
Income/(loss) from operations	(28)	(39)	(59)	(116)
Interest expense	0	1	(5)	(2)
Restructuring of CEOC and other	(472)	(3,072)	(2,348)	(5,335)
Income tax benefit/(provision)	15	(29)	(72)	(45)
Eliminations
Segment Reporting Information [Line Items]
Other	(6)	(4)	(16)	(15)
Net revenues	(6)	(4)	(16)	(15)
Depreciation and amortization	0	0	0	0
Income/(loss) from operations	0	0	0	0
Interest expense	0	0	0	0
Restructuring of CEOC and other	0	0	0	0
Income tax benefit/(provision)	$ 0	$ 0	$ 0	$ 0