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Organization Organization - Additional Information (Details)
$ in Millions
3 Months Ended
Mar. 31, 2016
USD ($)
business
Casinos
Mar. 31, 2016
USD ($)
business
Casinos
Mar. 31, 2016
USD ($)
business
Casinos
Mar. 31, 2016
USD ($)
business
Casinos
business_segments
Mar. 31, 2016
USD ($)
business
Casinos
segment
Mar. 31, 2015
USD ($)
Dec. 31, 2015
USD ($)
Oct. 07, 2015
USD ($)
Dec. 31, 2014
USD ($)
Substantial Doubt about Going Concern, Conditions or Events We have identified the following circumstances that raise substantial doubt about CEC’s ability to continue as a going concern (which are described in more detail below): we have limited cash available to meet financial commitments of CEC, primarily resulting from significant expenditures made to (1) defend the Company against the litigation matters disclosed below and (2) support a plan of reorganization for CEOC (the “Restructuring”); we have made material future commitments to support the Restructuring described below; and we are a defendant in litigation relating to certain CEOC transactions dating back to 2010 and other legal matters (see Note 3) that could result in one or more adverse rulings against us.                
Number of Reportable Segments       3 3        
Notes Payable, Related Parties, Current $ 35 $ 35 $ 35 $ 35 $ 35        
Long-term Debt, Gross 7,047 7,047 7,047 7,047 7,047        
Contractual Obligation, Due in Next Fiscal Year 538 538 538 538 538        
Contractual Obligation, Excluding Latest Fiscal Year 9,500 9,500 9,500 9,500 9,500        
Cash and cash equivalents 1,444 1,444 1,444 1,444 1,444 $ 1,555 $ 1,338   $ 2,806
Decrease in restricted cash   109       $ 37      
Accrued restructuring and support expenses 1,142 1,142 1,142 1,142 1,142   905    
Caesars Entertainment Operating Company [Member]                  
Accrued restructuring and support expenses 1,107 1,107 1,107 1,107 1,107   870    
Caesars Entertainment Operating Company [Member] | Bank Guaranty Settlement [Member]                  
Accrued restructuring and support expenses [1] 460 460 460 460 460   $ 386 $ 460  
Caesars Entertainment Operating Company [Member] | Minimum [Member] | Report of Bankruptcy Examiner [Member]                  
Loss Contingency, Estimate of Possible Loss 3,600 3,600 3,600 3,600 3,600        
Caesars Entertainment Operating Company [Member] | Maximum [Member] | Report of Bankruptcy Examiner [Member]                  
Loss Contingency, Estimate of Possible Loss $ 5,100 5,100 $ 5,100 $ 5,100 $ 5,100        
Casino Properties and Development [Member]                  
Decrease in restricted cash   $ 100              
Caesars Entertainment Operating Company [Member]                  
Number Of Casinos Managed | business 28 28 28 28 28        
Third Party [Member]                  
Number Of Casinos Managed | Casinos 9 9 9 9 9        
Parent Company [Member]                  
Cash and cash equivalents $ 218 $ 218 $ 218 $ 218 $ 218        
Parent Company [Member] | Affiliated Entity [Member]                  
Cash and cash equivalents $ 96 $ 96 $ 96 $ 96 $ 96        
UNITED STATES                  
Number Of Casinos Operated Or Managed | Casinos 12 12 12 12 12        
UNITED STATES | LAS VEGAS, NEVADA | Geographic Concentration Risk [Member]                  
Number Of Casinos Operated Or Managed | Casinos 8 8 8 8 8        
UNITED STATES | LAS VEGAS, NEVADA | Geographic Concentration Risk [Member] | Sales Revenue, Net [Member]                  
Concentration Risk, Percentage     53.00%            
Indian Land [Member] | Third Party [Member]                  
Number Of Casinos Managed | Casinos 4 4 4 4 4        
[1] Amount payable on the Effective Date is subject to the excess cash held by CEOC at Emergence.