REVENUE FROM CONTRACTS WITH CUSTOMERS - Composition of our Contract Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Disaggregation Of Revenue [Line Items]
Bonus point incentive liability	$ 52	$ 54
Advanced deposits
Disaggregation Of Revenue [Line Items]
Contract with customer, liability	181	179
Deferred sales of VOIs of projects under construction
Disaggregation Of Revenue [Line Items]
Contract with customer, liability	35	39
Club activation fees and annual dues
Disaggregation Of Revenue [Line Items]
Contract with customer, liability	180	97
Bonus point incentive liability
Disaggregation Of Revenue [Line Items]
Contract with customer, liability	94	83
Deferred maintenance fees
Disaggregation Of Revenue [Line Items]
Contract with customer, liability	39	12
Other deferred revenue
Disaggregation Of Revenue [Line Items]
Contract with customer, liability	$ 86	$ 38