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Debt Debt - CEOC Debt (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Mar. 31, 2013
Sep. 30, 2014
Current Portion Of Long Term Debt Face Value $ (18,049)czr_CurrentPortionOfLongTermDebtFaceValue      
Long-term Debt 23,213us-gaap_LongTermDebt 21,115us-gaap_LongTermDebt    
Long-term Debt, Gross 25,602us-gaap_DebtInstrumentCarryingAmount      
Long-term Debt, Current Maturities (15,779)us-gaap_LongTermDebtCurrent (197)us-gaap_LongTermDebtCurrent    
Long-term Debt, Excluding Current Maturities 7,434us-gaap_LongTermDebtNoncurrent 20,918us-gaap_LongTermDebtNoncurrent    
Caesars Entertainment Operating Company [Member]        
Debt Instrument, Face Amount 5,500us-gaap_DebtInstrumentFaceAmount
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember		   1,500us-gaap_DebtInstrumentFaceAmount
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember		  
Current Portion Of Long Term Debt Face Value (17,977)czr_CurrentPortionOfLongTermDebtFaceValue
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember		      
Long-term Debt 16,177us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember		 15,783us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember		    
Long-term Debt, Gross 18,371us-gaap_DebtInstrumentCarryingAmount
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember		      
Debt Instrument - Additional Unamortized Discount (77)czr_DebtInstrumentAdditionalUnamortizedDiscount
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember		 [1]      
Long Term Debt, less Discount 16,100czr_LongTermDebtlessDiscount
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember		      
Long-term Debt, Current Maturities (15,708)us-gaap_LongTermDebtCurrent
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember		 (113)us-gaap_LongTermDebtCurrent
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember		    
Long-Term Debt Instrument, Face Value 394czr_LongTermDebtInstrumentFaceValue
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember		      
Long-term Debt, Excluding Current Maturities 392us-gaap_LongTermDebtNoncurrent
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember		 15,670us-gaap_LongTermDebtNoncurrent
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember		    
Caesars Entertainment Operating Company [Member] | Medium-term Notes [Member] | Term Loan B One - B Three [Member]        
Long-term Debt 0us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= czr_TermLoanBOneBThreeMember
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember		 [2],[3] 29us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= czr_TermLoanBOneBThreeMember
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember		 [2],[3]    
Long-term Debt, Gross 0us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_CreditFacilityAxis
= czr_TermLoanBOneBThreeMember
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember		 [2],[3]      
Caesars Entertainment Operating Company [Member] | Medium-term Notes [Member] | Term Loan B4 [Member]        
Debt Instrument, Interest Rate, Stated Percentage 10.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_CreditFacilityAxis
= czr_TermLoanBFourMember
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember		      
Long-term Debt 362us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= czr_TermLoanBFourMember
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember		 [2] 948us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= czr_TermLoanBFourMember
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember		 [2]    
Long-term Debt, Gross 377us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_CreditFacilityAxis
= czr_TermLoanBFourMember
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember		 [2]      
Caesars Entertainment Operating Company [Member] | Medium-term Notes [Member] | Term Loans B Five [Member]        
Debt Instrument, Interest Rate, Stated Percentage 5.985%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_CreditFacilityAxis
= czr_TermLoansBFiveMember
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember		      
Long-term Debt 919us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= czr_TermLoansBFiveMember
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember		 [2] 989us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= czr_TermLoansBFiveMember
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember		 [2]    
Long-term Debt, Gross 938us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_CreditFacilityAxis
= czr_TermLoansBFiveMember
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember		 [2]      
Caesars Entertainment Operating Company [Member] | Medium-term Notes [Member] | Term Loan B Six [Member]        
Debt Instrument, Interest Rate, Stated Percentage 6.985%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_CreditFacilityAxis
= czr_TermLoanBSixMember
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember		      
Long-term Debt 2,234us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= czr_TermLoanBSixMember
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember		 [2] 2,400us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= czr_TermLoanBSixMember
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember		 [2]    
Long-term Debt, Gross 2,299us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_CreditFacilityAxis
= czr_TermLoanBSixMember
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember		 [2]      
Caesars Entertainment Operating Company [Member] | Medium-term Notes [Member] | Term Loan B Seven [Member]        
Debt Instrument, Interest Rate, Stated Percentage 9.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_CreditFacilityAxis
= czr_TermLoanBSevenMember
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember		      
Long-term Debt 1,647us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= czr_TermLoanBSevenMember
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember		 [2],[4] 0us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= czr_TermLoanBSevenMember
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember		 [2],[4]    
Long-term Debt, Gross 1,741us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_CreditFacilityAxis
= czr_TermLoanBSevenMember
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember		 [2],[4]      
Caesars Entertainment Operating Company [Member] | Medium-term Notes [Member] | Cromwell Credit Facility [Member]        
Long-term Debt 0us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= czr_CromwellCreditFacilityMember
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember		 [5] 180us-gaap_LongTermDebt
/ us-gaap_CreditFacilityAxis
= czr_CromwellCreditFacilityMember
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember		 [5]    
Long-term Debt, Gross 0us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_CreditFacilityAxis
= czr_CromwellCreditFacilityMember
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember		 [5]      
Caesars Entertainment Operating Company [Member] | Secured Debt [Member] | Twenty-Seventeen Note at Eleven point Two Five Percent [Member]        
Debt Instrument, Interest Rate, Stated Percentage 11.25%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
/ czr_SeniorSecuredNotesAxis
= czr_TwentySeventeenNoteatElevenpointTwoFivePercentMember		      
Long-term Debt 2,073us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
/ czr_SeniorSecuredNotesAxis
= czr_TwentySeventeenNoteatElevenpointTwoFivePercentMember		 2,066us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
/ czr_SeniorSecuredNotesAxis
= czr_TwentySeventeenNoteatElevenpointTwoFivePercentMember		    
Long-term Debt, Gross 2,095us-gaap_DebtInstrumentCarryingAmount
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
/ czr_SeniorSecuredNotesAxis
= czr_TwentySeventeenNoteatElevenpointTwoFivePercentMember		      
Caesars Entertainment Operating Company [Member] | Secured Debt [Member] | Twenty-twenty Note at Eight point Five Percent [Member]        
Debt Instrument, Interest Rate, Stated Percentage 8.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
/ czr_SeniorSecuredNotesAxis
= czr_TwentytwentyNoteatEightpointFivePercentMember		      
Long-term Debt 1,250us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
/ czr_SeniorSecuredNotesAxis
= czr_TwentytwentyNoteatEightpointFivePercentMember		 1,250us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
/ czr_SeniorSecuredNotesAxis
= czr_TwentytwentyNoteatEightpointFivePercentMember		    
Long-term Debt, Gross 1,250us-gaap_DebtInstrumentCarryingAmount
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
/ czr_SeniorSecuredNotesAxis
= czr_TwentytwentyNoteatEightpointFivePercentMember		      
Caesars Entertainment Operating Company [Member] | Secured Debt [Member] | Twenty-Twenty Note at Nine Percent [Member]        
Debt Instrument, Interest Rate, Stated Percentage 9.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
/ czr_SeniorSecuredNotesAxis
= czr_TwentyTwentyNoteatNinePercentMember		      
Long-term Debt 2,960us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
/ czr_SeniorSecuredNotesAxis
= czr_TwentyTwentyNoteatNinePercentMember		 2,955us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
/ czr_SeniorSecuredNotesAxis
= czr_TwentyTwentyNoteatNinePercentMember		    
Long-term Debt, Gross 3,000us-gaap_DebtInstrumentCarryingAmount
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
/ czr_SeniorSecuredNotesAxis
= czr_TwentyTwentyNoteatNinePercentMember		      
Caesars Entertainment Operating Company [Member] | Secured Debt [Member] | Chester Downs Senior Secured Notes [Member]        
Debt Instrument, Interest Rate, Stated Percentage 9.25%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
/ czr_SeniorSecuredNotesAxis
= czr_ChesterDownsSeniorSecuredNotesMember		      
Long-term Debt 330us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
/ czr_SeniorSecuredNotesAxis
= czr_ChesterDownsSeniorSecuredNotesMember		 330us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
/ czr_SeniorSecuredNotesAxis
= czr_ChesterDownsSeniorSecuredNotesMember		    
Long-term Debt, Gross 330us-gaap_DebtInstrumentCarryingAmount
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
/ czr_SeniorSecuredNotesAxis
= czr_ChesterDownsSeniorSecuredNotesMember		      
Long-term Debt, Excluding Current Maturities 330us-gaap_LongTermDebtNoncurrent
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
/ czr_SeniorSecuredNotesAxis
= czr_ChesterDownsSeniorSecuredNotesMember		      
Caesars Entertainment Operating Company [Member] | Subordinated Debt [Member] | Twenty-Eighteen Note at Twelve point Seven Five [Member]        
Debt Instrument, Interest Rate, Stated Percentage 12.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
/ us-gaap_SubordinatedBorrowingAxis
= czr_TwentyEighteenNoteatTwelvepointSevenFiveMember		      
Long-term Debt 745us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
/ us-gaap_SubordinatedBorrowingAxis
= czr_TwentyEighteenNoteatTwelvepointSevenFiveMember		 744us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
/ us-gaap_SubordinatedBorrowingAxis
= czr_TwentyEighteenNoteatTwelvepointSevenFiveMember		    
Long-term Debt, Gross 750us-gaap_DebtInstrumentCarryingAmount
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
/ us-gaap_SubordinatedBorrowingAxis
= czr_TwentyEighteenNoteatTwelvepointSevenFiveMember		      
Caesars Entertainment Operating Company [Member] | Subordinated Debt [Member] | Twenty-Eighteen Note at Ten Percent [Member]        
Debt Instrument, Interest Rate, Stated Percentage 10.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
/ us-gaap_SubordinatedBorrowingAxis
= czr_TwentyEighteenNoteatTenPercentMember		      
Debt Instrument, Face Amount 4,485us-gaap_DebtInstrumentFaceAmount
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
/ us-gaap_SubordinatedBorrowingAxis
= czr_TwentyEighteenNoteatTenPercentMember		      
Long-term Debt 2,618us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
/ us-gaap_SubordinatedBorrowingAxis
= czr_TwentyEighteenNoteatTenPercentMember		 2,433us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
/ us-gaap_SubordinatedBorrowingAxis
= czr_TwentyEighteenNoteatTenPercentMember		    
Long-term Debt, Gross 4,485us-gaap_DebtInstrumentCarryingAmount
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
/ us-gaap_SubordinatedBorrowingAxis
= czr_TwentyEighteenNoteatTenPercentMember		      
Caesars Entertainment Operating Company [Member] | Subordinated Debt [Member] | Twenty-Fifteen Note at Ten Percent [Member]        
Debt Instrument, Interest Rate, Stated Percentage 10.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
/ us-gaap_SubordinatedBorrowingAxis
= czr_TwentyFifteenNoteatTenPercentMember		      
Long-term Debt 3us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
/ us-gaap_SubordinatedBorrowingAxis
= czr_TwentyFifteenNoteatTenPercentMember		 188us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
/ us-gaap_SubordinatedBorrowingAxis
= czr_TwentyFifteenNoteatTenPercentMember		    
Long-term Debt, Gross 3us-gaap_DebtInstrumentCarryingAmount
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SubordinatedDebtMember
/ us-gaap_SubordinatedBorrowingAxis
= czr_TwentyFifteenNoteatTenPercentMember		      
Caesars Entertainment Operating Company [Member] | Capital Lease Obligations [Member]        
Long-term Debt 17us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember		 17us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember		    
Long-term Debt, Gross 17us-gaap_DebtInstrumentCarryingAmount
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember		      
Long-term Debt, Excluding Current Maturities 18us-gaap_LongTermDebtNoncurrent
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember		      
Caesars Entertainment Operating Company [Member] | Subsidiary Guaranteed Senior Notes [Member] | Senior Notes [Member]        
Debt Instrument, Interest Rate, Stated Percentage 10.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= czr_SubsidiaryGuaranteedSeniorNotesMember
/ czr_SeniorSecuredNotesAxis
= us-gaap_SeniorNotesMember		      
Long-term Debt 479us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= czr_SubsidiaryGuaranteedSeniorNotesMember
/ czr_SeniorSecuredNotesAxis
= us-gaap_SeniorNotesMember		 [6] 479us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= czr_SubsidiaryGuaranteedSeniorNotesMember
/ czr_SeniorSecuredNotesAxis
= us-gaap_SeniorNotesMember		 [6]    
Long-term Debt, Gross 479us-gaap_DebtInstrumentCarryingAmount
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= czr_SubsidiaryGuaranteedSeniorNotesMember
/ czr_SeniorSecuredNotesAxis
= us-gaap_SeniorNotesMember		 [6]      
Caesars Entertainment Operating Company [Member] | Subsidiary Guaranteed Senior Notes [Member] | Payment in Kind (PIK) Note [Member]        
Long-term Debt 0us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= czr_SubsidiaryGuaranteedSeniorNotesMember
/ czr_SeniorSecuredNotesAxis
= us-gaap_PaymentInKindPIKNoteMember		 [6] 11us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= czr_SubsidiaryGuaranteedSeniorNotesMember
/ czr_SeniorSecuredNotesAxis
= us-gaap_PaymentInKindPIKNoteMember		 [6]    
Long-term Debt, Gross 0us-gaap_DebtInstrumentCarryingAmount
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= czr_SubsidiaryGuaranteedSeniorNotesMember
/ czr_SeniorSecuredNotesAxis
= us-gaap_PaymentInKindPIKNoteMember		 [6]      
Caesars Entertainment Operating Company [Member] | Subsidiary Guaranteed Senior Notes [Member] | Minimum [Member] | Payment in Kind (PIK) Note [Member]        
Debt Instrument, Interest Rate, Stated Percentage 10.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= czr_SubsidiaryGuaranteedSeniorNotesMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ czr_SeniorSecuredNotesAxis
= us-gaap_PaymentInKindPIKNoteMember		      
Caesars Entertainment Operating Company [Member] | Subsidiary Guaranteed Senior Notes [Member] | Maximum [Member] | Payment in Kind (PIK) Note [Member]        
Debt Instrument, Interest Rate, Stated Percentage 11.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= czr_SubsidiaryGuaranteedSeniorNotesMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ czr_SeniorSecuredNotesAxis
= us-gaap_PaymentInKindPIKNoteMember		      
Caesars Entertainment Operating Company [Member] | Unsecured Debt [Member]        
Long-term Debt 30us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_UnsecuredDebtMember		 45us-gaap_LongTermDebt
/ dei_LegalEntityAxis
= czr_CaesarsEntertainmentOperatingCompanyMember
/ us-gaap_LongtermDebtTypeAxis
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Caesars Entertainment Operating Company [Member] | Unsecured Debt [Member] | Unsecured Senior Debt Five Point Six Two Five Percent [Member]        
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[1] Increase in discount on long-term debt due to distribution of CEOC notes through a dividend to a non-consolidated affiliate recorded on CEC parent.
[2] In conjunction with the terms of the Bank Amendment (defined below), Caesars Entertainment guarantees collection of amounts under the Credit Facilities.
[3] Repaid in the third quarter of 2014.
[4] The Term B7 Loans have a springing maturity to 90 days prior to March 1, 2017, if more than $500 million of CEOC’s Term B5 Loan and Term B6 Loan remain outstanding on such date.
[5] The property that secured this debt was sold to CGP LLC in May 2014. The debt was formerly “Bill’s Credit Facility.”
[6] Guaranteed by certain wholly owned subsidiaries of CEOC.