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Stock-Based Compensation - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense $ 43 $ 43 $ 71
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 13,000,000    
Caesars Acquisition Company [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Options Outstanding Under Plan 0 1,002,500  
Caesars Acquisition Company [Member] | Restricted stock units and awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restricted Stock Units Outstanding Under Plan 0 493,061  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value $ 5 $ 4 4
Caesars Acquisition Company [Member] | CAC Equity-Based Compensation Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense   2 12
Parent [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense $ 43 $ 232 102
Options Outstanding Under Plan 9,227,890 9,820,168  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options $ 167    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 3 years 5 months    
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 $ 29 $ 23 $ 8
Restricted Stock Units Outstanding Under Plan 17,274,659 8,447,922  
Stock Issued During Period, Value, Restricted Stock Award, Gross $ 153    
Parent [Member] | Two Thousands One Two Incentive Plan [Member] | Performance Shares [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Common Stock Closing Price Per Share $ 35.00    
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 9,000,000    
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 5,000,000    
Parent [Member] | 2017 Incentive Plan [Member] | Performance Shares [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense $ 1    
Employee Stock Options Exercise Price $ 9.45    
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 24,838,042