VACATION OWNERSHIP NOTES RECEIVABLE - Aging of Recorded Investment in Principal, Vacation Ownership Notes Receivable (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Past Due [Line Items]
Vacation ownership notes receivable	$ 2,766	$ 2,589
Non-securitized
Financing Receivable, Past Due [Line Items]
Vacation ownership notes receivable	629	566
Securitized
Financing Receivable, Past Due [Line Items]
Vacation ownership notes receivable	2,137	2,023
Total past due
Financing Receivable, Past Due [Line Items]
Vacation ownership notes receivable	246	231
Total past due | Non-securitized
Financing Receivable, Past Due [Line Items]
Vacation ownership notes receivable	164	151
Total past due | Securitized
Financing Receivable, Past Due [Line Items]
Vacation ownership notes receivable	82	80
31 – 90 days past due
Financing Receivable, Past Due [Line Items]
Vacation ownership notes receivable	77	81
31 – 90 days past due | Non-securitized
Financing Receivable, Past Due [Line Items]
Vacation ownership notes receivable	20	25
31 – 90 days past due | Securitized
Financing Receivable, Past Due [Line Items]
Vacation ownership notes receivable	57	56
91 – 120 days past due
Financing Receivable, Past Due [Line Items]
Vacation ownership notes receivable	22	23
91 – 120 days past due | Non-securitized
Financing Receivable, Past Due [Line Items]
Vacation ownership notes receivable	6	7
91 – 120 days past due | Securitized
Financing Receivable, Past Due [Line Items]
Vacation ownership notes receivable	16	16
Greater than 120 days past due
Financing Receivable, Past Due [Line Items]
Vacation ownership notes receivable	147	127
Greater than 120 days past due | Non-securitized
Financing Receivable, Past Due [Line Items]
Vacation ownership notes receivable	138	119
Greater than 120 days past due | Securitized
Financing Receivable, Past Due [Line Items]
Vacation ownership notes receivable	9	8
Current
Financing Receivable, Past Due [Line Items]
Vacation ownership notes receivable	2,520	2,358
Current | Non-securitized
Financing Receivable, Past Due [Line Items]
Vacation ownership notes receivable	465	415
Current | Securitized
Financing Receivable, Past Due [Line Items]
Vacation ownership notes receivable	$ 2,055	$ 1,943