Basis of Presentation & Consolidation - Additional Information (Details) $ in Millions	3 Months Ended								8 Months Ended	12 Months Ended
	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Aug. 31, 2017 USD ($)	Dec. 31, 2017 USD ($) reportable_segment	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Variable Interest Entity [Line Items]
Prior Period Reclassification Adjustment										$ 3,700
Non-cash change in restructuring accrual										$ 2,065	$ 3,667	$ 0
Number of Reportable Segments | reportable_segment										3
Net revenues	$ 1,901	$ 986	$ 1,002	$ 963	$ 949	$ 986	$ 992	$ 950		$ 4,852	3,877	3,929
Net income/(loss) attributable to Caesars	2,001	$ (435)	$ (1,434)	$ (507)	(463)	$ (244)	$ (2,055)	$ (286)		(375)	(3,048)	6,009
Total assets	25,512				14,923					25,512	14,923
Total liabilities	22,216				16,532					22,216	16,532
Long-term Debt	8,913				$ 6,838					8,913	6,838
Gain on deconsolidation of subsidiaries										30	$ 0	$ 7,125
CBIC, LLC [Member]
Variable Interest Entity [Line Items]
Equity Method Investments, Fair Value Disclosure	$ 28									28
Gain on deconsolidation of subsidiaries										$ 30
Horseshoe Casino Baltimore [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Net revenues									$ 188
Net income/(loss) attributable to Caesars									(6)
Total assets									350
Total liabilities									354
Long-term Debt									$ 294