Description of Business - Schedule of Business Acquisition (Details) - USD ($) shares in Millions, $ in Millions		12 Months Ended
	Oct. 06, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Cash	$ 3,487
CEC common stock (value)	8,103			$ 5,176	[1]
CEC convertible notes (fair value)	2,172	$ 0	$ 0	2,349
Other consideration	177
Total consideration	$ 13,939
CEC common stock (shares)	633
Caesars Entertainment Operating Company
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Cash	$ 2,787
CEC common stock (value)	3,435
CEC convertible notes (fair value)	2,172
Other consideration	177
Total consideration	$ 8,571			$ 8,600
CEC common stock (shares)	268
OpCo
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Cash	$ 700
CEC common stock (value)	1,774
CEC convertible notes (fair value)	0
Other consideration	0
Total consideration	$ 2,474
CEC common stock (shares)	139
Caesars Acquisition Company
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Cash	$ 0
CEC common stock (value)	2,894
CEC convertible notes (fair value)	0
Other consideration	0
Total consideration	$ 2,894
CEC common stock (shares)	226

[1] See Note 1 .