Quarterly report pursuant to Section 13 or 15(d)

Transactions With Former Parent (Narrative) (Details)

v3.20.2
Transactions With Former Parent (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Other non-current liabilities          
Related Party Transaction [Line Items]          
Separation and distribution agreement, contingent liability assumed, remaining amount $ 21   $ 21   $ 22
Other Current Liabilities          
Related Party Transaction [Line Items]          
Separation and distribution agreement, contingent liability assumed, remaining amount 2   2    
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 $ 1 0 $ 3  
Affiliated Entity | Licensing Agreements          
Related Party Transaction [Line Items]          
Revenue from former parent 1 1 3 3  
Affiliated Entity | Wyndham Rewards          
Related Party Transaction [Line Items]          
Revenue from former parent 4 5 7 11  
Wyndham Worldwide | Licensing Agreements          
Related Party Transaction [Line Items]          
Revenue from former parent $ 16 $ 27 $ 32 $ 48