Goodwill and Intangible Assets, net - Schedule of Intangible Assets Other Than Goodwill (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-lived intangible assets, gross	$ 572	$ 101
Finite-lived intangible assets, accumulated amortization	(71)	(48)
Finite-Lived Intangible Assets, Net, Total	501	53
Indefinite-lived intangible assets (excluding goodwill)	3,965	1,058
Total amortizing and non-amortizing intangible assets, net	4,466	1,111
Trademarks
Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Indefinite-lived intangible assets (excluding goodwill)	2,202	165
Gaming rights
Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Indefinite-lived intangible assets (excluding goodwill)	1,223	893
Caesars Rewards
Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Indefinite-lived intangible assets (excluding goodwill)	540	0
Customer relationships
Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-lived intangible assets, gross	488	101
Finite-lived intangible assets, accumulated amortization	(71)	(48)
Finite-Lived Intangible Assets, Net, Total	$ 417	53
Customer relationships | Minimum
Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-lived intangible assets, useful life	3 years
Customer relationships | Maximum
Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-lived intangible assets, useful life	7 years
Gaming rights and others
Finite Lived And Indefinite Lived Intangible Assets By Major Class [Line Items]
Finite-lived intangible assets, useful life	34 years 2 months 12 days
Finite-lived intangible assets, gross	$ 84	0
Finite-lived intangible assets, accumulated amortization	0	0
Finite-Lived Intangible Assets, Net, Total	$ 84	$ 0