Basis of Presentation and Principles of Consolidation Basis of Presentation and Consolidation (Details) - USD ($)		3 Months Ended			9 Months Ended
		Sep. 30, 2017	Mar. 31, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Aug. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Variable Interest Entity [Line Items]
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents		$ 4,414,000,000		$ 5,088,000,000	$ 4,414,000,000	$ 5,088,000,000		$ 4,631,000,000	$ 1,394,000,000
Net Cash Provided by (Used in) Investing Activities					(295,000,000)	(139,000,000)
Allowance for Doubtful Accounts Receivable, Recoveries			$ 19,000,000
Net revenues		986,000,000		986,000,000	2,951,000,000	2,928,000,000
Net income/(loss) attributable to company		(468,000,000)		(643,000,000)	(2,456,000,000)	(3,028,000,000)
Total assets		14,353,000,000			14,353,000,000			14,894,000,000
Total liabilities		18,168,000,000			18,168,000,000			16,312,000,000
Long-term Debt		6,477,000,000			6,477,000,000			6,838,000,000
CGP
Variable Interest Entity [Line Items]
Restricted Cash and Cash Equivalents		2,700,000,000			2,700,000,000			3,000,000,000
CGP | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Net revenues		407,000,000		422,000,000	1,300,000,000	1,282,000,000
Net income/(loss) attributable to company		17,000,000		3,200,000,000	12,000,000	3,200,000,000
Long-term Debt	[1]	1,966,000,000			1,966,000,000			2,275,000,000
CEOC | CES
Variable Interest Entity [Line Items]
Noncontrolling Interest in Variable Interest Entity		26,000,000			26,000,000			$ 33,000,000
CEOC | Variable Interest Entity, Not Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Cost Method Investments		0			0
Adjustments for New Accounting Pronouncement [Member]
Variable Interest Entity [Line Items]
Revenues				$ 4,000,000		13,000,000
Net Cash Provided by (Used in) Investing Activities						$ (3,300,000,000)
CRBH | CGP | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Net revenues					188,000,000
Net income/(loss) attributable to company					(6,000,000)
Total assets							$ 350,000,000
Total liabilities		354,000,000			354,000,000
Long-term Debt		294,000,000			294,000,000
Deconsolidation, Gain (Loss), Amount					30,000,000
Equity Method Investments, Fair Value Disclosure		$ 28,000,000			$ 28,000,000

[1] See Note 17 for additional information about pending transactions related to CERP and CGPH’s debt and their organizational structures.