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Description of Business - Additional Information (Details)
$ in Millions
12 Months Ended
Dec. 26, 2018
USD ($)
Jul. 11, 2018
USD ($)
Oct. 06, 2017
USD ($)
Dec. 31, 2018
USD ($)
Casinos
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Variable Interest Entity [Line Items]            
Number Of Casinos Operated Or Managed | Casinos       53    
Restructuring and support expenses       $ 0 $ 2,028 $ 5,729
Long-term Debt       $ 8,965 8,913  
Total Restructuring and Acquisition Consideration     $ 13,939      
UNITED STATES            
Variable Interest Entity [Line Items]            
Number Of Casinos Operated Or Managed | Casinos       50    
Geographic Concentration Risk [Member] | UNITED STATES            
Variable Interest Entity [Line Items]            
Number Of Casinos Operated Or Managed | Casinos       14    
Geographic Concentration Risk [Member] | International [Member]            
Variable Interest Entity [Line Items]            
Number Of Casinos Operated Or Managed | Casinos       5    
Las Vegas, NV [Member] | Geographic Concentration Risk [Member] | UNITED STATES            
Variable Interest Entity [Line Items]            
Number Of Casinos Operated Or Managed | Casinos       9    
Sales Revenue, Net [Member] | Las Vegas, NV [Member] | Geographic Concentration Risk [Member] | UNITED STATES            
Variable Interest Entity [Line Items]            
Concentration Risk, Percentage       45.00%    
Caesars Entertainment Operating Company [Member]            
Variable Interest Entity [Line Items]            
Total Restructuring and Acquisition Consideration     $ 8,571      
Harrah's Philadelphia [Member]            
Variable Interest Entity [Line Items]            
Sale Leaseback Transaction, Net Book Value $ 242          
Lease Modification Consideration $ 159          
Octavius Tower [Member]            
Variable Interest Entity [Line Items]            
Proceeds from Sale of Real Estate   $ 508        
Convertible Debt [Member] | Unsecured Debt [Member]            
Variable Interest Entity [Line Items]            
Long-term Debt       $ 1,083 $ 1,078