Segment Reporting - Adjusted EBITDA (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Net income/(loss) attributable to Caesars (1)	$ 189	$ (217)
Net loss attributable to noncontrolling interests	(1)	(1)
Income tax benefit	54	(29)
Other (income)/loss	(641)	138
Interest expense	333	349
Depreciation and amortization	256	247
Impairment of tangible and other intangible assets	65	0
Other operating costs	21	29
Stock-based compensation expense	10	21
Other items	13	25
Adjusted EBITDA	299	562
COVID-19 related adjustments	96
Operating Segments | Las Vegas
Segment Reporting Information [Line Items]
Net income/(loss) attributable to Caesars (1)	2	143
Net loss attributable to noncontrolling interests	0	0
Income tax benefit	0	0
Other (income)/loss	2	0
Interest expense	82	83
Depreciation and amortization	120	128
Impairment of tangible and other intangible assets	0
Other operating costs	8	3
Stock-based compensation expense	2	2
Other items	1	1
Adjusted EBITDA	217	360
Operating Segments | Other U.S.
Segment Reporting Information [Line Items]
Net income/(loss) attributable to Caesars (1)	(212)	(26)
Net loss attributable to noncontrolling interests	(1)	(1)
Income tax benefit	0	0
Other (income)/loss	(3)	0
Interest expense	144	143
Depreciation and amortization	115	103
Impairment of tangible and other intangible assets	65
Other operating costs	3	12
Stock-based compensation expense	2	2
Other items	2	0
Adjusted EBITDA	115	233
Operating Segments | All Other
Segment Reporting Information [Line Items]
Net income/(loss) attributable to Caesars (1)	399	(334)
Net loss attributable to noncontrolling interests	0	0
Income tax benefit	54	(29)
Other (income)/loss	(640)	138
Interest expense	107	123
Depreciation and amortization	21	16
Impairment of tangible and other intangible assets	0
Other operating costs	10	14
Stock-based compensation expense	6	17
Other items	10	24
Adjusted EBITDA	(33)	(31)
Intersegment Elimination
Segment Reporting Information [Line Items]
Net income/(loss) attributable to Caesars (1)	0	0
Net loss attributable to noncontrolling interests	0	0
Income tax benefit	0	0
Other (income)/loss	0	0
Interest expense	0	0
Depreciation and amortization	0	0
Impairment of tangible and other intangible assets	0
Other operating costs	0	0
Stock-based compensation expense	0	0
Other items	0	0
Adjusted EBITDA	$ 0	$ 0