VARIABLE INTEREST ENTITIES - Interest Income and Expense Recognized as a Result of Our Involvement with Variable Interest Entities (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Variable Interest Entity [Line Items]
Interest income	$ 71	$ 68	$ 209	$ 190
Administrative expenses	62	$ 54	187	$ 166
Variable interest entity
Variable Interest Entity [Line Items]
Interest income	60		179
Interest expense to investors	13		35
Debt issuance cost amortization	2		7
Administrative expenses			1
Variable interest entity | Vacation Ownership Notes Receivable Securitizations
Variable Interest Entity [Line Items]
Interest income	58		173
Interest expense to investors	12		33
Debt issuance cost amortization	2		6
Administrative expenses			1
Variable interest entity | Warehouse Credit Facility
Variable Interest Entity [Line Items]
Interest income	2		6
Interest expense to investors	1		2
Debt issuance cost amortization	$ 0		1
Administrative expenses			$ 0