Basis of Presentation and Principles of Consolidation - Reconciliation of Net Revenues and Net Income/(Loss) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Business Combination, Separately Recognized Transactions [Line Items]
Net revenues		$ 2,185	$ 993	$ 6,276	$ 2,967
Net income/(loss)		$ 111	(439)	$ 106	(2,379)
Consolidation, Eliminations [Member]
Business Combination, Separately Recognized Transactions [Line Items]
Net income/(loss)			14		23
Restatement Adjustment [Member] | Adoption of new revenue recognition standard (1)
Business Combination, Separately Recognized Transactions [Line Items]
Revenues	[1]		7		16
Net income/(loss)	[1]		2		4
Previously Reported [Member]
Business Combination, Separately Recognized Transactions [Line Items]
Revenues			986		2,951
Net income/(loss)			(441)		(2,383)
Previously Reported [Member] | Caesars Entertainment Corporation [Member]
Business Combination, Separately Recognized Transactions [Line Items]
Revenues			986		2,951
Net income/(loss)			(460)		(2,410)
Previously Reported [Member] | Caesars Acquisition Company [Member]
Business Combination, Separately Recognized Transactions [Line Items]
Revenues			0		0
Net income/(loss)			5		4
Previously Reported [Member] | Consolidation, Eliminations [Member]
Business Combination, Separately Recognized Transactions [Line Items]
Revenues			0		0
Net income/(loss)			$ 14		$ 23

[1] See above.