Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Narrative) (Details)

v3.20.4
Stock-Based Compensation (Narrative) (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
12 Months Ended
May 09, 2018
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
May 14, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Grant date fair value (in dollars per share)   $ 8.59 $ 10.46 $ 11.72  
Stock-based compensation expense   $ 21 $ 20 $ 45  
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   $ 2 $ 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)   $ 54.15 $ 55.75    
Vested (in shares)   0.3      
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)   $ 52.93 $ 52.44    
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)   5.8