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TIMESHARE FINANCING RECEIVABLES - Schedule of Timeshare Financing Receivables (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Jun. 30, 2024
Dec. 31, 2023
Accounts Notes And Loans Receivable [Line Items]        
Timeshare financing receivables, net $ 2,979 $ 3,006    
Originated        
Accounts Notes And Loans Receivable [Line Items]        
Timeshare financing receivables, gross 3,211 2,932    
Unamortized non-credit acquisition premium 0 0    
Less: allowance for financing receivables losses (904) (804) $ (613) $ (500)
Timeshare financing receivables, net 2,307 2,128    
Acquired        
Accounts Notes And Loans Receivable [Line Items]        
Timeshare financing receivables, gross 815 1,084    
Unamortized non-credit acquisition premium 46 62    
Less: allowance for financing receivables losses (189) (268) $ (393) $ (279)
Timeshare financing receivables, net 672 878    
Securitized        
Accounts Notes And Loans Receivable [Line Items]        
Timeshare financing receivables, gross 300      
Securitized | Originated        
Accounts Notes And Loans Receivable [Line Items]        
Timeshare financing receivables, gross 1,297 1,168    
Securitized | Acquired        
Accounts Notes And Loans Receivable [Line Items]        
Timeshare financing receivables, gross 506 641    
Unsecuritized | Originated        
Accounts Notes And Loans Receivable [Line Items]        
Timeshare financing receivables, gross 1,914 1,764    
Unsecuritized | Acquired        
Accounts Notes And Loans Receivable [Line Items]        
Timeshare financing receivables, gross $ 309 $ 443