INVENTORY - Schedule of Costs of Sales True-ups Relating to VOI Products (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Cost of sales true-up
Inventory [Line Items]
Expenses	$ 6	$ 7	$ 31	$ 33

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.