Annual report pursuant to Section 13 and 15(d)

Transactions With Former Parent (Narrative) (Details)

v3.24.0.1
Transactions With Former Parent (Narrative) (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Sep. 30, 2023
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Related Party Transaction [Line Items]          
Accrued Liabilities, Current   $ 299 $ 264    
Net revenues   1,397 1,498 $ 1,565  
Other current assets          
Related Party Transaction [Line Items]          
Receivables due from former parent   3 3    
Affiliated Entity | Licensing Agreements          
Related Party Transaction [Line Items]          
Net revenues   7 7 5  
Affiliated Entity | Wyndham Rewards          
Related Party Transaction [Line Items]          
Net revenues   15 10 9  
Affiliated Entity | Sale of European Vacation Rentals Business          
Related Party Transaction [Line Items]          
Post closing-adjustment to reduce net consideration         $ 44
Accrued Liabilities, Current     2    
Former Parent's Post-Closing Adjustment   7      
Payments for Legal Settlements $ 2        
Wyndham Worldwide | Licensing Agreements          
Related Party Transaction [Line Items]          
Net revenues   $ 90 $ 83 $ 65