REVENUE FROM CONTRACTS WITH CUSTOMERS - Composition of our Contract Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Disaggregation Of Revenue [Line Items]
Bonus point incentive liability	$ 55	$ 54
Advanced deposits
Disaggregation Of Revenue [Line Items]
Contract with customer, liability	224	179
Deferred sales of VOIs of projects under construction
Disaggregation Of Revenue [Line Items]
Contract with customer, liability	51	39
Club activation fees and annual dues
Disaggregation Of Revenue [Line Items]
Contract with customer, liability	142	97
Bonus point incentive liability
Disaggregation Of Revenue [Line Items]
Contract with customer, liability	93	83
Deferred maintenance fees
Disaggregation Of Revenue [Line Items]
Contract with customer, liability	29	12
Other deferred revenue
Disaggregation Of Revenue [Line Items]
Contract with customer, liability	$ 61	$ 38