SECURITIZED DEBT - Additional Information (Details)		3 Months Ended
	May 22, 2020 USD ($)	Mar. 31, 2020 USD ($) Loan	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Debt Instrument [Line Items]
Number of notes receivable pools under performance triggers | Loan		0
Number of notes receivable pools outstanding | Loan		12
Number of notes receivable pools out of compliance | Loan		0
Securitized debt, net		$ 1,926,000,000		$ 1,871,000,000
Warehouse Credit Facility
Debt Instrument [Line Items]
Values of vacation ownership notes receivable that were securitized during the period			$ (240,000,000)
Advance rate for securitization			84.00%
Proceeds from vacation ownership notes receivable securitizations			$ 202,000,000
Cash flows between transferee and transferor proceeds			201,000,000
Cash flows between transferee and transfer or funding of restricted cash (less than for third quarter of 2019)			$ (1,000,000)
Warehouse Credit Facility
Debt Instrument [Line Items]
Credit facility		$ 350,000,000
Subsequent Event
Debt Instrument [Line Items]
Debt, stated interest rate	6.125%
Subsequent Event | Warehouse Credit Facility
Debt Instrument [Line Items]
Credit facility	$ 531,000,000
Line of credit facility, increase in maximum borrowing capacity	$ 181,000,000
London Interbank Offered Rate (LIBOR) | Warehouse Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate		1.10%
London Interbank Offered Rate (LIBOR) | Subsequent Event | Warehouse Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate	1.40%