VARIABLE INTEREST ENTITIES - Classifications of Consolidated VIE Assets and Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Variable Interest Entity [Line Items]
Vacation ownership notes receivable, net of reserves	$ 2,336	$ 2,343
Interest receivable	422	385
Restricted cash	313	326
TOTAL ASSETS	9,867	9,680
Interest payable	384	343
Securitized debt	2,178	2,096
TOTAL LIABILITIES	7,489	7,298
Variable interest entity
Variable Interest Entity [Line Items]
Vacation ownership notes receivable, net of reserves	1,914	1,912
Interest receivable	15	15
Restricted cash	128	79
TOTAL ASSETS	2,057
Interest payable	4	4
Securitized debt	2,205	2,121
TOTAL LIABILITIES	2,209
Secured Debt | Variable interest entity
Variable Interest Entity [Line Items]
Securitized debt	2,205
Vacation Ownership Notes Receivable Securitizations | Variable interest entity
Variable Interest Entity [Line Items]
Vacation ownership notes receivable, net of reserves	1,914
Interest receivable	15
Restricted cash	128
TOTAL ASSETS	2,057
Interest payable	3
TOTAL LIABILITIES	2,208
Vacation Ownership Notes Receivable Securitizations | Secured Debt | Variable interest entity
Variable Interest Entity [Line Items]
Securitized debt	2,205	$ 1,971
Warehouse Credit Facility | Variable interest entity
Variable Interest Entity [Line Items]
Vacation ownership notes receivable, net of reserves	0
Interest receivable	0
Restricted cash	0
TOTAL ASSETS	0
Interest payable	1
TOTAL LIABILITIES	1
Warehouse Credit Facility | Secured Debt | Variable interest entity
Variable Interest Entity [Line Items]
Securitized debt	$ 0