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Basis of Presentation and Consolidation Basis of Presentation and Consolidation (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 36 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Net revenues $ 1,253us-gaap_SalesRevenueNet $ 2,033us-gaap_SalesRevenueNet  
Net income/(loss) attributable to Caesars 6,772us-gaap_NetIncomeLoss (386)us-gaap_NetIncomeLoss 7,200us-gaap_NetIncomeLoss
Caesars Growth Partners, LLC [Member]      
Net revenues 567us-gaap_SalesRevenueNet
/ dei_LegalEntityAxis
= czr_CaesarsGrowthPartnersLlcMember
226us-gaap_SalesRevenueNet
/ dei_LegalEntityAxis
= czr_CaesarsGrowthPartnersLlcMember
 
Net income/(loss) attributable to Caesars (2)us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= czr_CaesarsGrowthPartnersLlcMember
1us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= czr_CaesarsGrowthPartnersLlcMember
 
Caesars Growth Partners, LLC [Member] | Variable Interest Entity, Primary Beneficiary [Member] | Contingently Issuable Membership Units [Member]      
Contingent Consideration Classified as Equity, Fair Value Disclosure $ 228us-gaap_ContingentConsiderationClassifiedAsEquityFairValueDisclosure
/ dei_LegalEntityAxis
= czr_CaesarsGrowthPartnersLlcMember
/ us-gaap_StatementClassOfStockAxis
= czr_ContingentlyIssuableMembershipUnitsMember
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
  $ 347us-gaap_ContingentConsiderationClassifiedAsEquityFairValueDisclosure
/ dei_LegalEntityAxis
= czr_CaesarsGrowthPartnersLlcMember
/ us-gaap_StatementClassOfStockAxis
= czr_ContingentlyIssuableMembershipUnitsMember
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityPrimaryBeneficiaryMember