VACATION OWNERSHIP NOTES RECEIVABLE - Vacation Ownership Notes Receivable, Brand and FICO score (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	$ 2,802	$ 2,813
Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	163	180
Acquired | Marriott Vacation Ownership
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	82	91
Acquired | Hyatt Vacation Ownership
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	81	89
Acquired | 700 +
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	90	99
Acquired | 700 + | Marriott Vacation Ownership
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	42	46
Acquired | 700 + | Hyatt Vacation Ownership
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	48	53
Acquired | 600 - 699
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	59	66
Acquired | 600 - 699 | Marriott Vacation Ownership
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	28	32
Acquired | 600 - 699 | Hyatt Vacation Ownership
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	31	34
Acquired | Less Than 600
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	5	5
Acquired | Less Than 600 | Marriott Vacation Ownership
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	4	4
Acquired | Less Than 600 | Hyatt Vacation Ownership
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	1	1
Acquired | No Score
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	9	10
Acquired | No Score | Marriott Vacation Ownership
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	8	9
Acquired | No Score | Hyatt Vacation Ownership
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	1	1
Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	2,639	2,633
Originated | Marriott Vacation Ownership
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	2,373	2,370
Originated | Hyatt Vacation Ownership
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	266	263
Originated | 700 +
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	1,572	1,569
Originated | 700 + | Marriott Vacation Ownership
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	1,381	1,381
Originated | 700 + | Hyatt Vacation Ownership
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	191	188
Originated | 600 - 699
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	678	679
Originated | 600 - 699 | Marriott Vacation Ownership
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	608	609
Originated | 600 - 699 | Hyatt Vacation Ownership
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	70	70
Originated | Less Than 600
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	59	59
Originated | Less Than 600 | Marriott Vacation Ownership
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	57	57
Originated | Less Than 600 | Hyatt Vacation Ownership
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	2	2
Originated | No Score
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	330	326
Originated | No Score | Marriott Vacation Ownership
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	327	323
Originated | No Score | Hyatt Vacation Ownership
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	$ 3	$ 3