SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) portfolioSegment	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Club activitation fee amortization period	7 years
Contract cost	$ 11	$ 8
Commission expense for certain vacation package sales	$ 7	9
Number of timeshare financing portfolio segments | portfolioSegment	2
Accrued interest income	$ 73	70	$ 28
Number of days, ceased accruing interest	91 days
Number of days, timeshare financing receivable	121 days
Reversal of impairment charges		7
Compensation expense recognized	$ 23	19	$ 5
Other Assets
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Deferred selling expenses	$ 18	$ 18
Computer Equipment and Acquired Software
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful life	3 years
Minimum
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Bonus points validation period	18 months
Minimum | Buildings and Improvements
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful life	8 years
Minimum | Furniture and equipment
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful life	3 years
Minimum | Cloud Computing Arrangements
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated useful life	3 years
Maximum
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Bonus points validation period	30 months
Maximum | Buildings and Improvements
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful life	40 years
Maximum | Furniture and equipment
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful life	15 years
Maximum | Cloud Computing Arrangements
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated useful life	5 years