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Casino Promotional Allowances Casino Promotional Allowance - Retail Cost (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Cost of Promotional Allowances $ 80czr_CostOfPromotionalAllowances $ 168czr_CostOfPromotionalAllowances
Food and Beverage [Member]    
Cost of Promotional Allowances 52czr_CostOfPromotionalAllowances
/ czr_PromotionalAllowanceAxis
= czr_FoodAndBeverageMember		 114czr_CostOfPromotionalAllowances
/ czr_PromotionalAllowanceAxis
= czr_FoodAndBeverageMember
Rooms [Member]    
Cost of Promotional Allowances 23czr_CostOfPromotionalAllowances
/ czr_PromotionalAllowanceAxis
= czr_RoomsMember		 41czr_CostOfPromotionalAllowances
/ czr_PromotionalAllowanceAxis
= czr_RoomsMember
Other Promotional Allowances [Member]    
Cost of Promotional Allowances $ 5czr_CostOfPromotionalAllowances
/ czr_PromotionalAllowanceAxis
= czr_OtherPromotionalAllowancesMember		 $ 13czr_CostOfPromotionalAllowances
/ czr_PromotionalAllowanceAxis
= czr_OtherPromotionalAllowancesMember