Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Narrative) (Details)

v3.21.2
Stock-Based Compensation (Narrative) (Details) - USD ($)
shares in Millions, $ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
May 14, 2018
Restructuring Charges          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock-based compensation expense       $ 1  
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) 5.3   5.3    
Stock-based compensation expense $ 7 $ 5 $ 20 $ 15