Quarterly report pursuant to Section 13 or 15(d)

Transactions With Former Parent (Net Parent Transfers) (Details)

v3.19.3
Transactions With Former Parent (Net Parent Transfers) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2018
Jun. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Related Party Transaction [Line Items]        
Transfer from (to) Parent $ (38)     $ (38)
Proceeds from Contributions from Parent     $ 68 106
Dividend to former Parent     $ 0 (90)
Net contributions from former Parent (1) $ 234    
Wyndham Worldwide        
Related Party Transaction [Line Items]        
Liabilities Assumed       197
Proceeds from Contributions from Parent       106
Dividend to former Parent       (90)
Other Contributions From Former Parent, Net       20
Net contributions from former Parent       233
Net Transfers to and Net Contributions From Former Parent       195
Wyndham Worldwide | Cash pooling and general financing activities        
Related Party Transaction [Line Items]        
Transfer from (to) Parent (110)     (110)
Wyndham Worldwide | Indirect general corporate overhead allocations        
Related Party Transaction [Line Items]        
Transfer from (to) Parent 12     12
Wyndham Worldwide | Corporate allocations for shared services        
Related Party Transaction [Line Items]        
Transfer from (to) Parent 13     13
Wyndham Worldwide | Stock-based compensation allocations        
Related Party Transaction [Line Items]        
Transfer from (to) Parent 20     20
Wyndham Worldwide | Income taxes        
Related Party Transaction [Line Items]        
Transfer from (to) Parent $ 27     $ 27