v3.26.1
Revenue Recognition (Contract Liabilities) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Mar. 31, 2025
Dec. 31, 2024
Disaggregation of Revenue [Line Items]        
Contract liabilities $ 479 $ 469 $ 487 $ 459
Contract with Customer, Liability, Revenue Recognition Term 1 year      
Deferred subscription revenue        
Disaggregation of Revenue [Line Items]        
Contract liabilities $ 151 147    
Deferred VOI trial package revenue        
Disaggregation of Revenue [Line Items]        
Contract liabilities $ 137 138    
Deferred VOI trial package revenue | Vacation Ownership        
Disaggregation of Revenue [Line Items]        
Contract with Customer, Liability, Revenue Recognition Term 3 years      
Deferred VOI incentive revenue        
Disaggregation of Revenue [Line Items]        
Contract liabilities $ 88 90    
Deferred VOI incentive revenue | Vacation Ownership        
Disaggregation of Revenue [Line Items]        
Contract with Customer, Liability, Revenue Recognition Term 2 years      
Deferred exchange-related revenue        
Disaggregation of Revenue [Line Items]        
Contract liabilities [1] $ 58 57    
Deferred exchange-related revenue | Balance Sheet Location [Axis]: us-gaap:AccruedLiabilitiesCurrentAndNoncurrent        
Disaggregation of Revenue [Line Items]        
Contract liabilities [1] 1 1    
Deferred co-branded credit card programs revenue        
Disaggregation of Revenue [Line Items]        
Contract liabilities 34 36    
Deferred other revenue        
Disaggregation of Revenue [Line Items]        
Contract liabilities $ 11 $ 1    
[1] Includes contractual liabilities to accommodate members for cancellations initiated by the Company due to unexpected events. As of both March 31, 2026 and December 31, 2025, there were $1 million of these contractual liabilities included within Accrued expenses and other liabilities on the Condensed Consolidated Balance Sheets.