Description of Business Description of Business - Schedule of Business Acquisition (Details) - USD ($) shares in Millions, $ in Millions			12 Months Ended
		Oct. 06, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Payments for Restructuring		$ 3,487
Stock Issued During Period for Merger and Emergence		8,103
Issuance of convertible notes and call right		2,172	$ 0	$ 2,349	$ 0
Other Significant Noncash Transaction, Value of Consideration Given		177
Total Restructuring and Acquisition Consideration		$ 13,939
Stock Issued During Period, Shares, Other		633
OpCo [Member]
Payments for Restructuring		$ 700
Stock Issued During Period for Merger and Emergence	[1]	1,774
Issuance of convertible notes and call right		0
Other Significant Noncash Transaction, Value of Consideration Given		0
Total Restructuring and Acquisition Consideration		$ 2,474
Stock Issued During Period, Shares, Other		139
Caesars Acquisition Company [Member]
Payments for Restructuring		$ 0
Stock Issued During Period for Merger and Emergence		2,894
Issuance of convertible notes and call right		0
Other Significant Noncash Transaction, Value of Consideration Given		0
Total Restructuring and Acquisition Consideration		$ 2,894
Stock Issued During Period, Shares, Other		226
Caesars Entertainment Operating Company [Member]
Payments for Restructuring		$ 2,787
Stock Issued During Period for Merger and Emergence		3,435
Issuance of convertible notes and call right		2,172
Other Significant Noncash Transaction, Value of Consideration Given		177
Total Restructuring and Acquisition Consideration		$ 8,571
Stock Issued During Period, Shares, Other		268

[1] (1) Approximately 139 million shares of CEC common stock issued at the Effective Date closing stock price of $12.80.