Segment Reporting Segment Reporting - Property EBITDA - By Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Segment Reporting Information [Line Items]
Net income/(loss) attributable to company	$ (546)	$ (308)
Net income attributable to noncontrolling interests	22	34
Discontinued operations, net of income taxes		33
Income tax (benefit)/provision	72	7
Deconsolidation and restructuring of CEOC and other	463	237
Interest expense	147	151
Depreciation and amortization	102	112
Corporate expense	33	41
Other operating costs	(3)	22
CIE stock-based compensation		13
Property EBITDA	290	276
Operating Segments [Member] | CERP
Segment Reporting Information [Line Items]
Net income/(loss) attributable to company	6	(16)
Net income attributable to noncontrolling interests	0	0
Discontinued operations, net of income taxes		0
Income tax (benefit)/provision	6	(6)
Deconsolidation and restructuring of CEOC and other	0	1
Interest expense	98	99
Depreciation and amortization	56	73
Corporate expense	10	11
Other operating costs	1	2
CIE stock-based compensation		0
Property EBITDA	177	164
Operating Segments [Member] | CGP
Segment Reporting Information [Line Items]
Net income/(loss) attributable to company	8	30
Net income attributable to noncontrolling interests	(1)	4
Discontinued operations, net of income taxes		33
Income tax (benefit)/provision	0	(1)
Deconsolidation and restructuring of CEOC and other	0	(1)
Interest expense	48	52
Depreciation and amortization	46	39
Corporate expense	7	7
Other operating costs	6	1
CIE stock-based compensation		13
Property EBITDA	114	111
Other
Segment Reporting Information [Line Items]
Net income/(loss) attributable to company	(560)	(322)
Net income attributable to noncontrolling interests	23	30
Discontinued operations, net of income taxes		0
Income tax (benefit)/provision	66	14
Deconsolidation and restructuring of CEOC and other	463	237
Interest expense	1	0
Depreciation and amortization	0	0
Corporate expense	16	24
Other operating costs	(10)	19
CIE stock-based compensation		0
Property EBITDA	(1)	2
Eliminations
Segment Reporting Information [Line Items]
Net income/(loss) attributable to company	0	0
Net income attributable to noncontrolling interests	0	0
Discontinued operations, net of income taxes		0
Income tax (benefit)/provision	0	0
Deconsolidation and restructuring of CEOC and other	0	0
Interest expense	0	0
Depreciation and amortization	0	0
Corporate expense	0	(1)
Other operating costs	0	0
CIE stock-based compensation		0
Property EBITDA	$ 0	$ (1)