VACATION OWNERSHIP NOTES RECEIVABLE - Vacation Ownership Notes Receivable, Brand and FICO score (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	$ 2,548	$ 2,447
Marriot
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable		1,329
Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	310	444
Acquired | Combined Marriott
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	158
Acquired | Westin
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable		95
Acquired | Sheraton
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable		133
Acquired | Hyatt
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	10	15
Acquired | Welk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	142	197
Acquired | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable		4
Acquired | 700 +
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	166	231
Acquired | 700 + | Combined Marriott
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	77
Acquired | 700 + | Westin
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable		52
Acquired | 700 + | Sheraton
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable		54
Acquired | 700 + | Hyatt
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	6	8
Acquired | 700 + | Welk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	83	115
Acquired | 700 + | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable		2
Acquired | 600 - 699
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	115	165
Acquired | 600 - 699 | Combined Marriott
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	55
Acquired | 600 - 699 | Westin
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable		32
Acquired | 600 - 699 | Sheraton
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable		48
Acquired | 600 - 699 | Hyatt
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	3	6
Acquired | 600 - 699 | Welk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	57	79
Acquired | 600 - 699 | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable		0
Acquired | Less Than 600
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	9	13
Acquired | Less Than 600 | Combined Marriott
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	7
Acquired | Less Than 600 | Westin
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable		3
Acquired | Less Than 600 | Sheraton
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable		8
Acquired | Less Than 600 | Hyatt
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	1	1
Acquired | Less Than 600 | Welk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	1	1
Acquired | Less Than 600 | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable		0
Acquired | No Score
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	20	35
Acquired | No Score | Combined Marriott
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	19
Acquired | No Score | Westin
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable		8
Acquired | No Score | Sheraton
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable		23
Acquired | No Score | Hyatt
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	0	0
Acquired | No Score | Welk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	1	2
Acquired | No Score | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable		2
Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	2,238	674
Originated | Combined Marriott
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	2,027
Originated | Westin
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable		251
Originated | Sheraton
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable		296
Originated | Hyatt
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	43	33
Originated | Welk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	168	94
Originated | 700 +
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	1,298	366
Originated | 700 + | Combined Marriott
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	1,153
Originated | 700 + | Westin
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable		143
Originated | 700 + | Sheraton
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable		136
Originated | 700 + | Hyatt
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	28	22
Originated | 700 + | Welk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	117	65
Originated | 600 - 699
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	599	198
Originated | 600 - 699 | Combined Marriott
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	538
Originated | 600 - 699 | Westin
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable		66
Originated | 600 - 699 | Sheraton
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable		94
Originated | 600 - 699 | Hyatt
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	13	11
Originated | 600 - 699 | Welk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	48	27
Originated | Less Than 600
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	58	29
Originated | Less Than 600 | Combined Marriott
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	56
Originated | Less Than 600 | Westin
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable		8
Originated | Less Than 600 | Sheraton
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable		20
Originated | Less Than 600 | Hyatt
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	1	0
Originated | Less Than 600 | Welk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	1	1
Originated | No Score
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	283	81
Originated | No Score | Combined Marriott
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	280
Originated | No Score | Westin
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable		34
Originated | No Score | Sheraton
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable		46
Originated | No Score | Hyatt
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	1	0
Originated | No Score | Welk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable	$ 2	$ 1