v3.26.3
ACQUISITION - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Apr. 29, 2026
Sep. 30, 2026
Sep. 30, 2026
Apr. 28, 2026
Dec. 31, 2025
Restructuring Cost and Reserve [Line Items]          
Goodwill   $ 1,987 $ 1,987   $ 1,985
Elara          
Restructuring Cost and Reserve [Line Items]          
Ownership percentage       25.00%  
Elara Acquisition          
Restructuring Cost and Reserve [Line Items]          
Ownership interest acquired 75.00%        
Cash consideration $ 131        
Controlling ownership interest percentage 100.00%        
Acquisition-related expense   1 3    
Business combination, achieved in stages, preacquisition equity interest in acquiree, remeasurement, loss   $ 1 $ 1    
Financing receivable, weighted average remaining term (in years)     10 years    
Securitized timeshare financing receivables $ 295        
Unsecuritized timeshare financing receivables 116        
Goodwill 2        
Elara Acquisition | Senior Notes and Other Debt          
Restructuring Cost and Reserve [Line Items]          
Debt $ 7