Annual report pursuant to Section 13 and 15(d)

Transactions With Former Parent (Narrative) (Details)

v3.22.0.1
Transactions With Former Parent (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Related Party Transaction [Line Items]      
Contract termination $ 0 $ 0 $ 42
Accrued Liabilities, Current 258 226  
Wyndham Hotels Defined Contribution Plans      
Related Party Transaction [Line Items]      
Defined contribution plan, cost 10 10 10
Other non-current liabilities      
Related Party Transaction [Line Items]      
Remaining amount of contingent liability assumed 18 18  
Current liabilities      
Related Party Transaction [Line Items]      
Remaining amount of contingent liability assumed 5 3  
Other current assets      
Related Party Transaction [Line Items]      
Receivables due from former parent 4 4  
Affiliated Entity | Separation And Distribution Agreement      
Related Party Transaction [Line Items]      
Revenue from former parent 0 0 6
Affiliated Entity | Licensing Agreements      
Related Party Transaction [Line Items]      
Revenue from former parent 5 6 7
Affiliated Entity | Wyndham Rewards      
Related Party Transaction [Line Items]      
Revenue from former parent 9 13 18
Affiliated Entity | Contract Termination Indemnification Obligation      
Related Party Transaction [Line Items]      
Contract termination     8
Affiliated Entity | Other Assets      
Related Party Transaction [Line Items]      
Other contributions from former parent, net     28
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    
Wyndham Worldwide | Licensing Agreements      
Related Party Transaction [Line Items]      
Revenue from former parent $ 65 $ 65 $ 106