SECURITIZED DEBT - Vacation Ownership Notes Receivable Securitizations (Details) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Securitized debt	$ 2,178,000,000	$ 2,096,000,000
Securitized debt
Debt Instrument [Line Items]
Secured debt, net	2,178,000,000	2,096,000,000
Variable interest entity
Debt Instrument [Line Items]
Securitized debt	2,205,000,000	2,121,000,000
Variable interest entity | Securitized debt
Debt Instrument [Line Items]
Securitized debt	$ 2,205,000,000
Debt, weighted average interest rate	4.70%
Variable interest entity | Securitized debt | Warehouse Credit Facility
Debt Instrument [Line Items]
Securitized debt	$ 0	150,000,000
Unamortized debt discount and issuance costs	0	(2,000,000)
Secured debt, net	0	148,000,000
Unamortized debt issuance costs	$ 1,000,000
Variable interest entity | Securitized debt | Minimum
Debt Instrument [Line Items]
Debt, stated interest rate	1.50%
Variable interest entity | Securitized debt | Maximum
Debt Instrument [Line Items]
Debt, stated interest rate	6.60%
Vacation Ownership Notes Receivable Securitizations | Variable interest entity | Securitized debt
Debt Instrument [Line Items]
Securitized debt	$ 2,205,000,000	1,971,000,000
Unamortized debt discount and issuance costs	(27,000,000)	(23,000,000)
Secured debt, net	$ 2,178,000,000	$ 1,948,000,000