Organization Organization - Additional Information (Details) $ in Millions		3 Months Ended			9 Months Ended
		Sep. 30, 2016 USD ($) business Casinos	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) reportable_segment business Casinos	Sep. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)
Number of Reportable Segments | reportable_segment					2
Business Combination, Contingent Consideration Arrangements, Description					In 2014, CEC and Caesars Acquisition Company (“CAC”) entered into a merger agreement, which was amended and restated on July 9, 2016 (the “Merger Agreement”). Pursuant to the Merger Agreement, among other things, CAC will merge with and into CEC, with CEC as the surviving company (the “Merger”). Subject to the terms and conditions of the Merger Agreement, upon consummation of the Merger, each share of CAC common stock issued and outstanding immediately prior to the effective date of the Merger will be converted into, and become exchangeable for, shares of CEC common stock in a ratio to ensure that holders of CAC common stock receive shares equal to 27.5% of the outstanding CEC common stock on a fully diluted basis (prior to the conversion of the CEC Convertible Notes being issued as part of the Restructuring, as defined below) (the “Exchange Ratio”). The Exchange Ratio may be subject to change, and CEC or CAC may terminate the Merger Agreement under certain circumstances.
Substantial Doubt about Going Concern, Conditions or Events					As a result of the following circumstances, we have substantial doubt about CEC’s ability to continue as a going concern: we have limited unrestricted cash available to meet the financial commitments of CEC, primarily resulting from significant expenditures made to (1) defend against the litigation matters disclosed below and (2) support a plan of reorganization for CEOC (the “Restructuring”); we have made material future commitments to support the Restructuring described below; and we are a defendant in litigation relating to certain CEOC transactions dating back to 2010 and other legal matters (see Note 3) that could result in one or more adverse rulings against us. CEC does not currently have sufficient cash to meet its financial commitments to support the Restructuring that are due when CEOC ultimately emerges from bankruptcy or to satisfy the potential obligations that would arise in the event of an adverse ruling on one or all of the litigation matters disclosed below. The completion of the Merger is expected to allow CEC to fulfill its financial commitments in support of the Restructuring. However, if the Merger is not completed for any reason, CEC would still be liable for many of these obligations. In addition, although under the terms of the Restructuring, all related litigation is expected to be resolved, the outstanding litigation matters are only stayed pending confirmation of the Restructuring and CEOC’s emergence from bankruptcy.
Payments of Distributions to Affiliates					$ 487	$ 0
Deconsolidation and restructuring of CEOC and other		$ (3,070)		$ (935)	(5,333)	6,162
Accrued restructuring and support expenses		6,209	$ 905		6,209
Unrecorded Unconditional Purchase Obligation		200			200
Notes Payable, Related Parties, Current		35			35
Long-term Debt, Gross		6,922			6,922
Contractual Obligation, Due in Next Fiscal Year	[1]	286			286
Contractual Obligation, Excluding Latest Fiscal Year		9,300			9,300
Cash and cash equivalents		1,669	1,227	$ 1,523	1,669	1,523	$ 2,702
Decrease in restricted cash					1,177	$ 55
Caesars Entertainment Operating Company [Member]
Deconsolidation and restructuring of CEOC and other		3,000			5,300
Accrued restructuring and support expenses		6,209	905		6,209
Notes Payable, Related Parties, Current		35	35		$ 35
Other Commitments, Description					The following represents other commitments or potential obligations to which CEC has agreed as part of the Third Amended Plan and certain of the RSAs, none of which have been accrued as of September 30, 2016. Purchase 100% of OpCo common stock for $700 million (1) Issuance of CEC common shares in exchange for OpCo preferred stock Purchase 5% of PropCo equity for $91 million (2) PropCo has right of first refusal on the real property assets associated with all new domestic non-Las Vegas gaming facility opportunities, with CEC or OpCo leasing such properties PropCo receives a call right to purchase the real property assets associated with Harrah’s Atlantic City, Harrah’s Laughlin, and Harrah’s New Orleans (subject to the terms of the CERP and CGPH credit agreements) Guarantee of OpCo’s payment obligations to PropCo under the leases of the CEOC Properties Guarantee of OpCo debt received by the First Lien Bank Lenders and First Lien Noteholders ____________________ “OpCo” refers to the proposed entity resulting from the Restructuring that will operate the CEOC Properties under a lease with PropCo. “CEOC Properties” refers to those properties owned by CEOC as of the Petition Date. “PropCo” refers to the proposed entity resulting from the Restructuring that will own the real property assets associated with the CEOC Properties as of the Effective Date. This commitment is dependent on the ultimate legal structure of the entities formed as part of the Restructuring.
Caesars Entertainment Operating Company [Member] | Other Restructuring [Member]
Payments for Restructuring			148
Caesars Entertainment Operating Company [Member] | Bank Guaranty Settlement [Member]
Accrued restructuring and support expenses		734	$ 386		$ 734
Caesars Entertainment Operating Company [Member] | Minimum [Member] | Report of Bankruptcy Examiner [Member]
Loss Contingency, Estimate of Possible Loss		3,600			3,600
Caesars Entertainment Operating Company [Member] | Maximum [Member] | Report of Bankruptcy Examiner [Member]
Loss Contingency, Estimate of Possible Loss		5,100			5,100
Convertible Debt [Member] | Caesars Entertainment Operating Company [Member]
Debt Instrument, Face Amount		$ 1,100			1,100
Casino Properties and Development [Member]
Decrease in restricted cash					$ 100
Caesars Entertainment Resort Properties [Member]
Noncontrolling Interest, Ownership Percentage by Parent		100.00%			100.00%
Long-term Debt, Gross		$ 4,586			$ 4,586
Contractual Obligation, Due in Next Fiscal Year	[1]	200			200
Cash and cash equivalents		$ 247			$ 247
Caesars Entertainment Operating Company [Member]
Number Of Casinos Managed | business		28			28
Third Party [Member]
Number Of Casinos Managed | Casinos		7			7
Parent Company [Member]
Cash and cash equivalents		$ 188			$ 188
Parent Company [Member] | Affiliated Entity [Member]
Cash and cash equivalents		$ 107			$ 107
UNITED STATES
Number Of Casinos Operated Or Managed | Casinos		12			12
UNITED STATES | LAS VEGAS, NEVADA | Geographic Concentration Risk [Member]
Number Of Casinos Operated Or Managed | Casinos		8			8
UNITED STATES | LAS VEGAS, NEVADA | Geographic Concentration Risk [Member] | Sales Revenue, Net [Member]
Concentration Risk, Percentage		65.00%			65.00%
Indian Land [Member] | Third Party [Member]
Number Of Casinos Managed | Casinos		4			4
Social and Mobile Games [Member]
Payments of Distributions to Affiliates					$ 235
Estimate of Fair Value Measurement [Member] | Fair Value, Measurements, Recurring [Member]
Restructuring Settlement Issued in Common Stock, Fair Value Disclosure		$ 1,741			1,741
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Convertible Debt [Member]
Debt Instrument, Face Amount		1,100			1,100
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Measurements, Recurring [Member]
Restructuring Settlement Issued in Common Stock, Fair Value Disclosure		29			29
Common Stock Subject to Mandatory Redemption [Member]
Recorded Unconditional Purchase Obligation		1,000			1,000
Discontinued Operations, Disposed of by Sale [Member] | Social and Mobile Games [Member]
Disposal Group, Including Discontinued Operation, Consideration		$ 4,400			$ 4,400

[1] Debt principal payments are estimated amounts based on maturity dates and potential borrowings under our revolving credit facility. Interest payments are estimated based on the forward-looking LIBOR curve. Actual payments may differ from these estimates.