Segment Reporting - Adjusted EBITDA (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting Information [Line Items]
Net income/(loss) attributable to Caesars	$ (359)	$ 110	$ (891)	$ 105
Net loss attributable to noncontrolling interests	(1)	1	(2)	1
Income tax benefit	(22)	(111)	(111)	(134)
Other (income)/loss	(27)	(109)	412	(338)
Interest expense	341	341	1,033	1,005
Depreciation and amortization	255	295	743	843
Impairment of tangible and other intangible assets	380	0	430	0
Other operating costs	33	29	86	128
Stock-based compensation expense	19	17	62	55
Other items	16	27	60	76
Adjusted EBITDA	635	600	1,822	1,741
Operating Segments | Las Vegas
Segment Reporting Information [Line Items]
Net income/(loss) attributable to Caesars	(237)	58	90	294
Net loss attributable to noncontrolling interests	0	0	0	0
Income tax benefit	0	0	0	0
Other (income)/loss	0	(4)	(2)	(4)
Interest expense	82	87	248	245
Depreciation and amortization	121	149	368	423
Impairment of tangible and other intangible assets	380		380
Other operating costs	7	13	12	42
Stock-based compensation expense	2	2	6	6
Other items	1	2	3	5
Adjusted EBITDA	356	307	1,105	1,011
Operating Segments | Other U.S.
Segment Reporting Information [Line Items]
Net income/(loss) attributable to Caesars	49	35	39	(24)
Net loss attributable to noncontrolling interests	0	0	0	1
Income tax benefit	0	0	0	0
Other (income)/loss	2	0	1	(2)
Interest expense	143	137	428	414
Depreciation and amortization	103	129	312	371
Impairment of tangible and other intangible assets	0		0
Other operating costs	4	6	16	13
Stock-based compensation expense	2	2	7	7
Other items	0	1	2	4
Adjusted EBITDA	303	310	805	784
Operating Segments | All Other
Segment Reporting Information [Line Items]
Net income/(loss) attributable to Caesars	(171)	17	(1,020)	(165)
Net loss attributable to noncontrolling interests	(1)	1	(2)	0
Income tax benefit	(22)	(111)	(111)	(134)
Other (income)/loss	(29)	(105)	413	(332)
Interest expense	116	117	357	346
Depreciation and amortization	31	17	63	49
Impairment of tangible and other intangible assets	0		50
Other operating costs	22	11	58	73
Stock-based compensation expense	15	13	49	42
Other items	15	23	55	67
Adjusted EBITDA	(24)	(17)	(88)	(54)
Intersegment Elimination
Segment Reporting Information [Line Items]
Net income/(loss) attributable to Caesars	0	0	0	0
Net loss attributable to noncontrolling interests	0	0	0	0
Income tax benefit	0	0	0	0
Other (income)/loss	0	0	0	0
Interest expense	0	0	0	0
Depreciation and amortization	0	0	0	0
Impairment of tangible and other intangible assets	0		0
Other operating costs	0	(1)	0	0
Stock-based compensation expense	0	0	0	0
Other items	0	1	0	0
Adjusted EBITDA	$ 0	$ 0	$ 0	$ 0