Quarterly Results of Operations (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net revenues	$ 2,169	$ 2,236	$ 2,222	$ 2,115	$ 2,115	$ 2,185	$ 2,119	$ 1,972	$ 8,742	$ 8,391	$ 4,868
Income/(loss) from operations	177	(68)	269	240	100	232	282	125	618	739	537
Net income/(loss)	(305)	(360)	(315)	(218)	198	111	29	(34)	(1,198)	304	(375)
Net income/(loss) attributable to Caesars	$ (304)	$ (359)	$ (315)	$ (217)	$ 198	$ 110	$ 29	$ (34)	$ (1,195)	$ 303	$ (368)
Basic earnings/(loss) per share (in dollars per share)	$ (0.45)	$ (0.53)	$ (0.47)	$ (0.32)	$ 0.29	$ 0.16	$ 0.04	$ (0.05)	$ (1.77)	$ 0.44	$ (1.32)
Diluted earnings/(loss) per share (in dollars per share)	$ (0.45)	$ (0.53)	$ (0.47)	$ (0.32)	(0.15)	0.05	0.02	$ (0.05)	$ (1.77)	(0.25)	$ (1.32)
Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Diluted earnings/(loss) per share (in dollars per share)					$ 0.25	$ 0.14	$ 0.04			$ 0.41