Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Narrative) (Details)

v3.19.3.a.u2
Stock-Based Compensation (Narrative) (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
12 Months Ended
May 09, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
May 14, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Grant date fair value (in dollars per share)   $ 10.46 $ 11.72    
Stock-based compensation expense   $ 20 $ 45 $ 11  
Separation related costs          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock-based compensation expense   4 36    
Separation related costs, modification of stock plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock-based compensation, portion recognized from modification of Stock Plan     $ 15    
Restructuring Charges          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock-based compensation expense   $ 1      
RSUs          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number 0.4        
Granted (in shares)   0.6      
Grant date fair value (in dollars per share)   $ 55.75 $ 61.31    
Vested (in shares)   0.1      
Performance Shares          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number 0.1        
Granted (in shares)   0.1      
Grant date fair value (in dollars per share)   $ 52.44 $ 0    
Wyndham Hotels & Resorts, Inc. 2018 Equity and Incentive Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Maximum number of shares approved (in shares)         10.0
Remaining shares available (in shares)   6.8