v3.26.1
Revenue Recognition Revenue Recognition (Disaggregation of Net Revenues) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Disaggregation of Revenue [Line Items]    
Net revenues $ 961 $ 934
Corporate and other    
Disaggregation of Revenue [Line Items]    
Net revenues (2) (1)
Corporate and other | Ancillary revenues    
Disaggregation of Revenue [Line Items]    
Net revenues 0 1
Corporate and other | Eliminations    
Disaggregation of Revenue [Line Items]    
Net revenues (2) (2)
Vacation Ownership | Operating Segments    
Disaggregation of Revenue [Line Items]    
Net revenues 798 755
Vacation Ownership | Operating Segments | Vacation Ownership Interest Sales    
Disaggregation of Revenue [Line Items]    
Net revenues 427 384
Vacation Ownership | Operating Segments | Property management fees and reimbursable revenues    
Disaggregation of Revenue [Line Items]    
Net revenues 223 223
Vacation Ownership | Operating Segments | Consumer financing    
Disaggregation of Revenue [Line Items]    
Net revenues 113 112
Vacation Ownership | Operating Segments | Fee-for-Service commissions    
Disaggregation of Revenue [Line Items]    
Net revenues 11 16
Vacation Ownership | Operating Segments | Ancillary revenues    
Disaggregation of Revenue [Line Items]    
Net revenues 24 20
Travel and Membership | Operating Segments    
Disaggregation of Revenue [Line Items]    
Net revenues 165 180
Travel and Membership | Operating Segments | Ancillary revenues    
Disaggregation of Revenue [Line Items]    
Net revenues 6 7
Travel and Membership | Operating Segments | Transaction revenues    
Disaggregation of Revenue [Line Items]    
Net revenues 117 130
Travel and Membership | Operating Segments | Subscription revenues    
Disaggregation of Revenue [Line Items]    
Net revenues $ 42 $ 43