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Stock-Based Compensation - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Allocated Share-based Compensation Expense $ 28us-gaap_AllocatedShareBasedCompensationExpense $ 26us-gaap_AllocatedShareBasedCompensationExpense  
Caesars Interactive Entertainment [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Allocated Share-based Compensation Expense 13us-gaap_AllocatedShareBasedCompensationExpense
/ dei_LegalEntityAxis
= czr_CaesarsInteractiveEntertainmentMember		 18us-gaap_AllocatedShareBasedCompensationExpense
/ dei_LegalEntityAxis
= czr_CaesarsInteractiveEntertainmentMember		  
Deferred Compensation Share-based Arrangements, Liability, Current and Noncurrent $ 101us-gaap_DeferredCompensationSharebasedArrangementsLiabilityCurrentAndNoncurrent
/ dei_LegalEntityAxis
= czr_CaesarsInteractiveEntertainmentMember		   $ 103us-gaap_DeferredCompensationSharebasedArrangementsLiabilityCurrentAndNoncurrent
/ dei_LegalEntityAxis
= czr_CaesarsInteractiveEntertainmentMember