Basis of Presentation and Principles of Consolidation Basis of Presentation and Principles of Consolidation - Reconciliation of Net Revenues and Net Income/(Loss) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Business Combination, Separately Recognized Transactions [Line Items]
Net revenues		$ 1,972	$ 966
Net income/(loss)		$ (34)	(508)
Scenario, Previously Reported [Member]
Business Combination, Separately Recognized Transactions [Line Items]
Net revenues			963
Net income/(loss)			(508)
Restatement Adjustment [Member]
Business Combination, Separately Recognized Transactions [Line Items]
Adoption of new revenue recognition standard (1)	[1]		3
Caesars Entertainment Corporation [Member] | Scenario, Previously Reported [Member]
Business Combination, Separately Recognized Transactions [Line Items]
Net revenues			963
Net income/(loss)			(524)
Caesars Acquisition Company [Member] | Scenario, Previously Reported [Member]
Business Combination, Separately Recognized Transactions [Line Items]
Net revenues			0
Net income/(loss)			$ 2

[1] See Adoption of New Revenue Recognition Standard above.