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Stock-Based Compensation - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Jun. 30, 2016
Jun. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Common stock, par value     $ 0.01          
Allocated Share-based Compensation Expense   $ 13 $ 189 $ 31 $ 49      
Caesars Interactive Entertainment [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Options, Outstanding, Number     0 21,057        
Weighted Average Exercise Price per Share (1)     $ 19,166.18 $ 15,352.49 $ 9,976.43      
Caesars Acquisition Company [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Common stock, par value               $ 0.001
Allocated Share-based Compensation Expense     $ 2 $ 12        
Caesars Acquisition Company [Member] | CAC Equity-Based Compensation Plan [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-Based Compensation Arrangement by Share-Based Payment Award, Value of Shares Available for Grant               $ 25
Parent [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Options, Outstanding, Number 9,735,585 [1]   9,820,168 10,638,219        
Weighted Average Exercise Price per Share (1) [2]     $ 0.00 $ 10.04 $ 21.18      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options     $ 53          
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition     2 years          
Allocated Share-based Compensation Expense $ 8 $ 10 $ 38 $ 62 $ 45      
Parent [Member] | Vesting Period One [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Vesting percentage of performace-based options     50.00%          
Parent [Member] | Vesting Period Two [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Vesting percentage of performace-based options     50.00%          
Parent [Member] | Replacement Options [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Weighted Average Exercise Price per Share (1)         $ 8.22      
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term         10 years      
Percentage Of Stock Options Vesting Per Year     20.00%          
Parent [Member] | Chairman, CEO and President Performance-Based Options [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number Of Stock Options Eligible For Exchange       290,334        
Parent [Member] | Restricted stock units and awards                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Stock Issued During Period, Value, Restricted Stock Award, Gross     $ 39          
Parent [Member] | Restricted stock units and awards | Annual [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage     25.00%          
Parent [Member] | Management Equity Incentive Plan [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Options, Outstanding, Number     23,755          
Parent [Member] | Management Equity Incentive Plan [Member] | Minimum [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Return On Investment     175.00%          
Parent [Member] | Management Equity Incentive Plan [Member] | Maximum [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Return On Investment     200.00%          
Parent [Member] | 2012 Incentive Plan [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of Shares Authorized     30,949,468          
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized     7,500,000          
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized     8,331,449          
Weighted Average Exercise Price per Share (1)           $ 20.09    
Parent [Member] | 2012 Incentive Plan [Member] | Replacement Options [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Common Stock Closing Price Per Share     $ 57.41          
Parent [Member] | 2012 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          
Caesars Interactive Entertainment [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Liability, Current and Noncurrent       $ 107        
Adjustments for New Accounting Pronouncement [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Cumulative Effect of New Accounting Principle in Period of Adoption             $ 1  
[1] There were no grants of stock options or restricted stock units related to CEC common stock during the three months ended March 31, 2017.
[2] Represents the weighted-average grant date fair value per option, using the Monte Carlo simulation option-pricing model for performance-based options, and the Black-Scholes option-pricing model for time-based options.