Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Narrative) (Details)

v3.19.1
Stock-Based Compensation (Narrative) (Details)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended
Jun. 01, 2018
Jul. 31, 2019
shares
Mar. 31, 2019
USD ($)
$ / shares
shares
Mar. 31, 2018
USD ($)
Dec. 31, 2018
$ / shares
May 14, 2018
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Allocated Share-based Compensation Expense | $       $ 3    
Grant date fair value (in dollars per share) | $ / shares     $ 10.46      
Common stock conversion 1          
Separation related costs            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Allocated Share-based Compensation Expense | $     $ 2      
Non-employee directors            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock-based compensation expense for non-employee directors (less than $1 million for the three months ended March 31, 2019) | $     $ 1      
RSUs            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Granted (in shares) | shares     500,000      
Grant date fair value (in dollars per share) | $ / shares     $ 50.03   $ 61.31  
RSUs | Scenario, Forecast            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vested (in shares) | shares   100,000        
Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Grant date fair value (in dollars per share) | $ / shares     $ 64.46      
Wyndham Hotels & Resorts, Inc. 2018 Equity and Incentive Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Allocated Share-based Compensation Expense | $     $ 5 $ 3    
Maximum number of shares approved (in shares) | shares           10,000,000
Remaining shares available (in shares) | shares     6,500,000