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Stock-Based Compensation - Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense $ 79 $ 43 $ 43
2017 Incentive Plan [Member] | Restricted stock units and awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options 9,000,000    
Caesars Interactive Entertainment [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense     189
Parent [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense $ 79 $ 43 232 [1]
Options Outstanding Under Plan 8,360,365 9,227,890  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options $ 126    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 2 years 4 months 24 days    
Parent [Member] | Performance Shares [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restricted Stock Units Outstanding Under Plan 1,466,183 0  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 1,569,801    
Parent [Member] | Restricted stock units and awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value $ 72 $ 29 $ 23
Restricted Stock Units Outstanding Under Plan 13,455,092 17,274,659  
Stock Issued During Period, Value, Restricted Stock Award, Gross $ 46    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 4,177,558    
Parent [Member] | Two Thousands One Two Incentive Plan [Member] | Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Domain]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Options Outstanding Under Plan 8,000,000    
Parent [Member] | Two Thousands One Two Incentive Plan [Member] | Restricted stock units and awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restricted Stock Units Outstanding Under Plan 2,000,000    
Parent [Member] | 2017 Incentive Plan [Member] | Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Domain]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized 25,000,000    
[1] (1) Includes $189M related to CIE stock-based compensation expense for the year ended December 31, 2016.