Goodwill and Other Intangible Assets - Gross Carrying Value and Accumulated Amortization of Intangible Assets Other Than Goodwill (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,130	$ 1,131
Accumulated Amortization	(842)	(789)
Net Carrying Amount	288	342
Indefinite-lived Intangible Assets [Line Items]
Non-amortizing intangible assets	2,562	2,635
Total intangible assets other than goodwill	2,850	2,977
Trademarks
Indefinite-lived Intangible Assets [Line Items]
Non-amortizing intangible assets	776	790
Gaming rights
Indefinite-lived Intangible Assets [Line Items]
Non-amortizing intangible assets	1,533	1,592
Caesars Rewards
Indefinite-lived Intangible Assets [Line Items]
Non-amortizing intangible assets	$ 253	253
Trade names and trademarks
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Useful Life (in years)	1 year 3 months 18 days
Gross Carrying Amount	$ 14	14
Accumulated Amortization	(7)	(3)
Net Carrying Amount	$ 7	11
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Useful Life (in years)	3 years 9 months 18 days
Gross Carrying Amount	$ 1,070	1,071
Accumulated Amortization	(803)	(756)
Net Carrying Amount	$ 267	315
Contract rights
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Useful Life (in years)	5 years 3 months 18 days
Gross Carrying Amount	$ 3	3
Accumulated Amortization	(2)	(2)
Net Carrying Amount	$ 1	1
Gaming rights
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Useful Life (in years)	4 years 8 months 12 days
Gross Carrying Amount	$ 43	43
Accumulated Amortization	(30)	(28)
Net Carrying Amount	$ 13	$ 15