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
	Mar. 31, 2024	Mar. 31, 2023
Variable Interest Entity [Line Items]
Interest income	$ 81	$ 76
Variable interest entity
Variable Interest Entity [Line Items]
Interest income	71
Interest expense	25
Debt issuance cost amortization	3
Variable interest entity | Vacation Ownership Notes Receivable Securitizations
Variable Interest Entity [Line Items]
Interest income	66
Interest expense	22
Debt issuance cost amortization	3
Variable interest entity | Warehouse Credit Facility
Variable Interest Entity [Line Items]
Interest income	5
Interest expense	3
Debt issuance cost amortization	$ 0