Segment Information - Schedule of Adjusted EBITDA by Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Net (loss) income attributable to Caesars	$ (926)	$ 37	$ (1,202)	$ 94
Net income attributable to noncontrolling interests	1	0	1	0
Net (income) loss from discontinued operations	1		1
Interest expense, net	473	72	608	217
Provision for income taxes	135	18	64	39
Other loss	164	(2)	174	1
Impairment charges	0	0	161	1
Depreciation and amortization	223	53	322	167
Stock-based compensation expense	45	4	55	16
Transaction costs and other operating costs	219	14	242	2
Other items	16	1	15	5
Adjusted EBITDA	351	197	441	542
Operating Segment
Segment Reporting Information [Line Items]
Adjusted EBITDA	331	205	439	569
Corporate and other
Segment Reporting Information [Line Items]
Net (loss) income attributable to Caesars	(814)	(80)	(868)	(206)
Net income attributable to noncontrolling interests	0		0
Net (income) loss from discontinued operations	0		0
Interest expense, net	224	37	287	114
Provision for income taxes	135	18	64	39
Other loss	164	(2)	174	1
Impairment charges			0	1
Depreciation and amortization	15	2	18	5
Stock-based compensation expense	38	4	48	16
Transaction costs and other operating costs	188	14	210	1
Other items	9	(1)	8	2
Adjusted EBITDA	(41)	(8)	(59)	(27)
Las Vegas | Operating Segment
Segment Reporting Information [Line Items]
Net (loss) income attributable to Caesars		0	(162)	0
Net income attributable to noncontrolling interests	0		0
Net (income) loss from discontinued operations	0		0
Interest expense, net	92	0	92	0
Provision for income taxes	0	0	0	0
Other loss	0	0	0	0
Impairment charges			0	0
Depreciation and amortization	91	0	91	0
Stock-based compensation expense	3	0	3	0
Transaction costs and other operating costs	19	0	19	0
Other items	0	0	0	0
Adjusted EBITDA	43	0	43	0
Regional
Segment Reporting Information [Line Items]
Net (loss) income attributable to Caesars				300
Regional | Operating Segment
Segment Reporting Information [Line Items]
Net (loss) income attributable to Caesars	47	117	(175)	300
Net income attributable to noncontrolling interests	1		1
Net (income) loss from discontinued operations	(9)		(9)
Interest expense, net	157	35	229	103
Provision for income taxes	0	0	0	0
Other loss	0	0	0	0
Impairment charges			161	0
Depreciation and amortization	117	51	213	162
Stock-based compensation expense	4	0	4	0
Transaction costs and other operating costs	7	0	8	1
Other items	7	2	7	3
Adjusted EBITDA	331	205	439	569
Managed, International, CIE | Operating Segment
Segment Reporting Information [Line Items]
Net (loss) income attributable to Caesars	3	0	3	0
Net income attributable to noncontrolling interests	0		0
Net (income) loss from discontinued operations	10		10
Interest expense, net	0	0	0	0
Provision for income taxes	0	0	0	0
Other loss	0	0	0	0
Impairment charges			0	0
Depreciation and amortization	0	0	0	0
Stock-based compensation expense	0	0	0	0
Transaction costs and other operating costs	5	0	5	0
Other items	0	0	0	0
Adjusted EBITDA	$ 18	$ 0	$ 18	$ 0