Litigation - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2010	Jun. 30, 2015	Dec. 31, 2013
Bondholder Communications - August Fourth Lawsuit [Member]
Loss Contingencies [Line Items]
Loss Contingency, Allegations		On August 4, 2014, Wilmington Savings Fund Society, FSB, solely in its capacity as successor Indenture Trustee for the 10.00% Second-Priority Senior Secured Notes due 2018 (the "10.00% Second-Priority Notes"), on behalf of itself and, it alleges, derivatively on behalf of CEOC, filed a lawsuit (the "Delaware Second Lien Lawsuit") in the Court of Chancery in the State of Delaware against CEC and CEOC, CGP, CAC,CERP, CES, Eric Hession, Gary Loveman, Jeffrey D. Benjamin, David Bonderman, Kelvin L. Davis, Marc C. Rowan, David B. Sambur, and Eric Press. The lawsuit alleges claims for breach of contract, intentional and constructive fraudulent transfer, breach of fiduciary duty, aiding and abetting breach of fiduciary duty, and corporate waste. The lawsuit seeks (1) an award of money damages; (2) to void certain transfers, the earliest of which dates back to 2010; (3) an injunction directing the recipients of the assets in these transactions to return them to CEOC; (4) a declaration that CEC remains liable under the parent guarantee formerly applicable to the 10.00% Second-Priority Notes; (5) to impose a constructive trust or equitable lien on the transferred assets; and (6) an award to plaintiffs for their attorneys’ fees and costs. CEC believes this lawsuit is without merit and will defend itself vigorously. A motion to dismiss this action was filed by CEC and other defendants in September 2014, and the motion was argued in December 2014. During the pendency of its Chapter 11 bankruptcy proceedings, the action has been automatically stayed with respect to CEOC. Vice Chancellor Glasscock denied the motion to dismiss with respect to CEC on March 18, 2015. Subsequently, plaintiffs advised the judge presiding over the CEOC bankruptcy proceeding that they would pursue in this litigation only those claims alleging that CEC remains liable under the parent guarantee formerly applicable to the 10.00% Second-Priority Notes. Discovery in the action is underway, with a current deadline of September 30, 2015.
Bondholder Communications - August Fifth Lawsuit [Member]
Loss Contingencies [Line Items]
Loss Contingency, Allegations		On August 5, 2014, CEC, along with CEOC, filed a lawsuit in the Supreme Court of the State of New York, County of New York, against certain institutional first and second lien note holders. The complaint states that such institutional first and second lien note holders have acted against the best interests of CEOC and other creditors, including for the purpose of inflating the value of their credit default swap positions or improving other unique securities positions. The complaint asserts claims for tortious interference with prospective economic advantage, declaratory judgment and breach of contract and seeks, among other things, (1) money damages; (2) a declaration that no default or event of default has occurred or is occurring and that CEC and CEOC have not breached their fiduciary duties or engaged in fraudulent transfers or other violation of law; and (3) a preliminary and permanent injunction prohibiting the defendants from taking further actions to damage CEC or CEOC. Defendants filed motions to dismiss this action in October 2014. On January 16, 2015, the claims against the first lien note holder defendant were voluntarily dismissed and on June 29, 2015, the declaratory judgment claim against the second lien note holder defendants was also voluntarily dismissed. On July 6, 2015, the claim for tortious interference with prospective economic advantage brought by CEOC against the second lien note holders was voluntarily dismissed as well, without prejudice, leaving in the action only the tortious interference with prospective economic advantage claim brought by CEC against the second lien note holder defendants. On July 20, 2015, the Court granted the second lien note holder defendants’ motion to dismiss that claim and ordered that the action be marked disposed.
Bondholder Communications - September Third Lawsuit [Member]
Loss Contingencies [Line Items]
Loss Contingency, Allegations		On September 3, 2014, holders of approximately $21 million of CEOC 6.50% Senior Unsecured Notes due 2016 and 5.75% Senior Unsecured Noted due 2017 (collectively, the “Senior Unsecured Notes”) filed suit in federal district court in Manhattan against CEC and CEOC, claiming broadly that an August 12, 2014 Note Purchase and Support Agreement between CEC and CEOC (on the one hand) and certain other holders of the Senior Unsecured Notes (on the other hand) impaired their own rights under the Trust Indenture Act of 1939 and the indentures governing the Senior Unsecured Notes. The lawsuit seeks both declaratory and monetary relief. On October 2, 2014, a holder of CEOC’s 6.50% Senior Unsecured Notes due 2016 purporting to represent a class of all persons who held these Notes from August 11, 2014 to the present filed a substantially similar suit in the same court, against the same defendants, relating to the same transactions. Both lawsuits (the "Senior Unsecured Lawsuits") have been assigned to the same judge. Although the claims against CEOC have been automatically stayed during its Chapter 11 bankruptcy proceedings, the court denied a motion to dismiss both lawsuits with respect to CEC, and discovery is ongoing with respect to the plaintiffs' claims against CEC.
Bondholder Communications - November Twenty fifth Lawsuit [Member]
Loss Contingencies [Line Items]
Loss Contingency, Allegations		On November 25, 2014, UMB Bank (“UMB”), as successor indenture trustee for CEOC's 8.50% Senior Secured Notes due 2020 (the “8.50% Senior Secured Notes”), filed a verified complaint (the "Delaware First Lien Lawsuit") in Delaware Chancery Court against CEC, CEOC, CERP, CAC, CGP, CES, and against individual past and present Board members Loveman, Benjamin, Bonderman, Davis, Press, Rowan, Sambur, Hession, Colvin, Kleisner, Swann, Williams, Housenbold, Cohen, Stauber, and Winograd, alleging generally that defendants improperly stripped CEOC of certain assets, wrongfully affected a release of CEC’s parent guarantee of the 8.50% Senior Secured Notes and committed other wrongs. Among other things, UMB Bank asked the court to appoint a receiver over CEOC. In addition, the suit pleads claims for fraudulent conveyances/transfers, insider preferences, illegal dividends, declaratory judgment (for breach of contract as regards to the parent guarantee and also as to certain covenants in the bond indenture), tortious interference with contract, breach of fiduciary duty, usurpation of corporate opportunities, and unjust enrichment, and seeks monetary, equitable and declaratory relief. The lawsuit has been automatically stayed with respect to CEOC during its Chapter 11 bankruptcy process. Pursuant to the First Lien Bond RSA, the lawsuit also has been stayed in its entirety, with the consent of all of the parties to it. The consensual stay will expire upon the termination of the First Lien Bond RSA.
Wilmington Savings Fund [Member]
Loss Contingencies [Line Items]
Loss Contingency, Allegations		On February 13, 2015, Caesars Entertainment received a Demand For Payment of Guaranteed Obligations (the “February 13 Notice”) from Wilmington Savings Fund Society, FSB, in its capacity as successor Trustee for CEOC’s 10.00% Second-Priority Notes. The February 13 Notice alleges that CEOC’s commencement of its voluntary Chapter 11 bankruptcy case constituted an event of default under the indenture governing the 10.00% Second-Priority Notes; that all amounts due and owing on the 10.00% Second-Priority Notes therefore immediately became payable; and that Caesars Entertainment is responsible for paying CEOC’s obligations on the 10.00% Second-Priority Notes, including CEOC’s obligation to timely pay all principal, interest, and any premium due on these notes, as a result of a parent guarantee provision contained in the indenture governing the notes that the February 13 Notice alleges is still binding. The February 13 Notice accordingly demands that Caesars Entertainment immediately pay Wilmington Savings Fund Society, FSB, cash in an amount of not less than $3.7 billion, plus accrued and unpaid interest (including without limitation the $184 million interest payment due December 15, 2014 that CEOC elected not to pay) and accrued and unpaid attorneys’ fees and other expenses. The February 13 Notice also alleges that the interest, fees and expenses continue to accrue.
February Eighteenth BOK Financial N.A. [Member]
Loss Contingencies [Line Items]
Loss Contingency, Allegations		On February 18, 2015, Caesars Entertainment received a Demand For Payment of Guaranteed Obligations (the “February 18 Notice”) from BOKF, N.A. (“BOKF”), in its capacity as successor Trustee for CEOC’s 12.75% Second-Priority Senior Secured Notes due 2018 (the “12.75% Second-Priority Notes”). The February 18 Notice alleges that CEOC’s commencement of its voluntary Chapter 11 bankruptcy case constituted an event of default under the indenture governing the 12.75% Second-Priority Notes; that all amounts due and owing on the 12.75% Second-Priority Notes therefore immediately became payable; and that CEC is responsible for paying CEOC’s obligations on the 12.75% Second-Priority Notes, including CEOC’s obligation to timely pay all principal, interest and any premium due on these notes, as a result of a parent guarantee provision contained in the indenture governing the notes that the February 18 Notice alleges is still binding. The February 18 Notice therefore demands that CEC immediately pay BOKF cash in an amount of not less than $750 million, plus accrued and unpaid interest, accrued and unpaid attorneys’ fees, and other expenses. The February 18 Notice also alleges that the interest, fees and expenses continue to accrue.
March Third BOK Financial N.A. [Member]
Loss Contingencies [Line Items]
Loss Contingency, Allegations		On March 3, 2015, BOKF filed a lawsuit (the “New York Second Lien Lawsuit”) against CEC in federal district court in Manhattan, in its capacity as successor trustee for CEOC’s 12.75% Second-Priority Notes. On June 15, 2015, UMB filed lawsuit (the “New York First Lien Lawsuit” and, together with the Delaware Second Lien Lawsuit, the Delaware First Lien Lawsuit, the Senior Unsecured Lawsuits and the New York Second Lien Lawsuit, the “Parent Guarantee Lawsuits”) against CEC, also in federal district court in Manhattan, in its capacity as successor trustee for CEOC’s 11.25% Senior Secured Notes due 2017, 8.50% Senior Secured Notes due 2020, and 9.00% Senior Secured Notes due 2020. Plaintiffs in these actions allege that CEOC’s filing of its voluntary Chapter 11 bankruptcy case constitutes an event of default under the indenture governing these notes, causing all principal and interest to become immediately due and payable, and that CEC is obligated to make those payments pursuant to a parent guarantee provision in the indentures governing these notes that plaintiffs allege are still binding. Both plaintiffs bring claims for violation of the Trust Indenture Act of 1939, breach of contract, breach of duty of good faith and fair dealing and for declaratory relief and BOKF brings an additional claim for intentional interference with contractual relations. The cases have both been assigned to the same judge presiding over the other Parent Guarantee Lawsuits that are taking place in Manhattan. CEC filed its answer to the BOKF complaint on March 25, 2015, and its answer to the UMB complaint is due on August 10, 2015. On June 25, 2015, and June 26, 2015, BOKF and UMB, respectively, moved for partial summary judgment, specifically on their claims alleging a violation of the Trust Indenture Act of 1939, seeking both declaratory relief and damages. CEC filed its opposition to those motions on July 24, 2015, and the motions will be fully briefed by August 7, 2015. The parties are separately also engaged in discovery in both actions.
Bondholder Communications - December Thirtieth Lawsuit [Member]
Loss Contingencies [Line Items]
Loss Contingency, Allegations		On December 30, 2014, Nicholas Koskie, on behalf of himself and, he alleges, all others similarly situated, filed a lawsuit (the “Merger Lawsuit”) in the Clark County District Court in the State of Nevada against CAC, CEC and members of the CAC board of directors Marc Beilinson, Philip Erlanger, Dhiren Fonseca, Don Kornstein, Karl Peterson, Marc Rowan, and David Sambur (the individual defendants collectively, the “CAC Directors”). The Merger Lawsuit alleges claims for breach of fiduciary duty against the CAC Directors and aiding and abetting breach of fiduciary duty against CAC and CEC. It seeks (1) an order directing the CAC Directors to fulfill alleged fiduciary duties to CAC in connection with the proposed merger between CAC and CEC announced on December 22, 2014 (the “Proposed Merger”), specifically by announcing their intention to (a) cooperate with bona fide interested parties proposing alternative transactions, (b) ensure that no conflicts exist between the CAC Directors’ personal interests and their fiduciary duties to maximize shareholder value in the Proposed Merger, or resolve all such conflicts in favor of the latter, and (c) act independently to protect the interests of the shareholders; (2) an order directing the CAC Directors to account for all damages suffered or to be suffered by plaintiff and the putative class as a result of the Proposed Merger; and (3) an award to plaintiff for his costs and attorneys’ fees. It is unclear whether the Merger Lawsuit also seeks to enjoin the Proposed Merger. CEC believes that this lawsuit is without merit and will defend itself vigorously. The deadline to respond to the Merger Lawsuit has been adjourned without a date by agreement of the parties.
Hilton Matter [Member]
Loss Contingencies [Line Items]
Loss Contingency, Loss in Period	$ 25
Loss Contingency, Damages Awarded, Value			$ 54
Loss Contingency, Estimate of Possible Loss			19
Loss Contingency, Range of Possible Loss, Portion Not Accrued			$ 35
National Retirement Fund Lawsuit [Member]
Loss Contingencies [Line Items]
Loss Contingency, Allegations		In January 2015, a majority of the Trustees of the National Retirement Fund (“NRF”), a multi-employer defined benefit pension plan, voted to expel CEC and its participating subsidiaries (“CEC Group”) from the plan. NRF claims that CEOC’s bankruptcy presents an “actuarial risk” to the plan because, depending on the outcome of the bankruptcy proceeding, CEC might no longer be liable to the plan for any partial or complete withdrawal liability. NRF has advised the CEC Group that its expulsion has triggered withdrawal liability with a present value of approximately $360 million, payable in 80 quarterly payments of about $6 million.
Loss Contingency, Management's Assessment and Process		Prior to NRF’s vote, the CEC Group reiterated its commitment to remain in the plan and not seek rejection of any collective bargaining agreements in which the obligation to contribute to NRF exists. It is completely current with respect to pension contributions. We opposed the NRF actions in the appropriate legal forums including seeking a declaratory judgment in federal district court challenging NRF’s authority to expel the CEC Group and also seeking relief in the CEOC bankruptcy proceeding. The parties entered into a Standstill Agreement in March 2015 staying the CEC Group’s obligation to commence quarterly payments and instead continue making its monthly contributions, and also setting a briefing schedule in the bankruptcy proceeding for both CEOC’s motion that NRF’s action violated the automatic stay and our motion to extend the stay to encompass NRF’s collection lawsuit against CEC. Both matters have been fully briefed, but the Bankruptcy Court has yet to rule. NRF has filed a motion to dismiss the federal district court action asserting that the governing statute requires that the issue must first be arbitrated. All briefs have been submitted. Absent a resolution, we expect the Bankruptcy Court to set an argument schedule at another hearing set for August 19, 2015.
Anti-Money Laundering Case [Member]
Loss Contingencies [Line Items]
Loss Contingency, Allegations		In recent years, governmental authorities have been increasingly focused on anti-money laundering (“AML”) policies and procedures, with a particular focus on the gaming industry. On October 11, 2013, CEOC’s subsidiary, Desert Palace, Inc. (the owner of and referred to herein as Caesars Palace), received a letter from the Financial Crimes Enforcement Network of the United States Department of the Treasury (“FinCEN”), stating that FinCEN is investigating Caesars Palace for alleged violations of the Bank Secrecy Act to determine whether it is appropriate to assess a civil penalty and/or take additional enforcement action against Caesars Palace. Caesars Palace responded to FinCEN’s letter on January 13, 2014. Additionally, we were informed in October 2013 that a federal grand jury investigation regarding anti-money laundering practices of CEC and its subsidiaries had been initiated. CEC and Caesars Palace have been fully cooperating with both the FinCEN and grand jury investigations since October 2013. On April 29, 2015, representatives of Caesars Palace met with representatives of the various governmental entities involved. At that meeting, the governmental parties reviewed with the representatives of Caesars Palace in general terms the results of their investigations and proposed a range of potential settlement outcomes, including fines in the range of $12 million to $20 million. Caesars Palace is a subsidiary of CEOC and, because of CEOC’s Chapter 11 bankruptcy filing on January 15, 2015, has been, together with CEOC’s other subsidiaries, deconsolidated from CEC’s financial results. Accordingly, we expect that any financial penalties imposed upon Caesars Palace would have a limited impact on CEC’s financial results.