Quarterly report pursuant to Section 13 or 15(d)

Related Party Transactions (Net Parent Transfers) (Details)

v3.8.0.1
Related Party Transactions (Net Parent Transfers) (Details) - Wyndham Worldwide - USD ($)
$ in Millions
Mar. 31, 2018
Mar. 31, 2017
Related Party Transaction [Line Items]    
Transfer from (to) Parent $ (14) $ (20)
Cash pooling and general financing activities    
Related Party Transaction [Line Items]    
Transfer from (to) Parent (44) (49)
Indirect general corporate overhead allocations    
Related Party Transaction [Line Items]    
Transfer from (to) Parent 9 9
Corporate allocations for shared services    
Related Party Transaction [Line Items]    
Transfer from (to) Parent 7 7
Stock-based compensation allocations    
Related Party Transaction [Line Items]    
Transfer from (to) Parent 3 2
Income taxes    
Related Party Transaction [Line Items]    
Transfer from (to) Parent $ 11 $ 11