Goodwill and Other Intangible Assets - Gross Carrying Value and Accumulated Amortization of Intangible Assets Other Than Goodwill (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,130	$ 1,130
Accumulated Amortization	(878)	(860)
Net Carrying Amount	252	270
Indefinite-lived Intangible Assets [Line Items]
Non-amortizing intangible assets	2,520	2,554
Total intangible assets other than goodwill	2,772	2,824
Trademarks
Indefinite-lived Intangible Assets [Line Items]
Non-amortizing intangible assets	776	776
Gaming rights
Indefinite-lived Intangible Assets [Line Items]
Non-amortizing intangible assets	1,491	1,525
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)	9 months 18 days
Gross Carrying Amount	$ 14	14
Accumulated Amortization	(9)	(8)
Net Carrying Amount	$ 5	6
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Useful Life (in years)	3 years 3 months 18 days
Gross Carrying Amount	$ 1,070	1,070
Accumulated Amortization	(835)	(819)
Net Carrying Amount	$ 235	251
Contract rights
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Useful Life (in years)	4 years 8 months 12 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 2 months 12 days
Gross Carrying Amount	$ 43	43
Accumulated Amortization	(32)	(31)
Net Carrying Amount	$ 11	$ 12