TIMESHARE FINANCING RECEIVABLES - Additional Information (Details) - USD ($)	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Aug. 31, 2023	Dec. 31, 2022
Accounts Notes And Loans Receivable [Line Items]
Increase decrease in variable consideration	$ 117,000,000	$ 101,000,000
Accrued interest receivable	55,000,000	$ 52,000,000
Timeshare financing receivable not accruing interest	88,000,000			$ 76,000,000
Legacy-Diamond
Accounts Notes And Loans Receivable [Line Items]
Timeshare financing receivable not accruing interest	369,000,000			377,000,000
Originated
Accounts Notes And Loans Receivable [Line Items]
Timeshare financing receivables, gross	1,983,000,000			1,759,000,000
Interest receivable outstanding	$ 15,000,000			13,000,000
Financing receivable, weighted average interest rate (as a percent)	14.70%
Financing receivable, weighted average remaining term (in years)	8 years 3 months 18 days
Originated | Minimum
Accounts Notes And Loans Receivable [Line Items]
Financing receivable, stated interest rate (as a percent)	1.50%
Originated | Maximum
Accounts Notes And Loans Receivable [Line Items]
Financing receivable, stated interest rate (as a percent)	25.80%
Acquired
Accounts Notes And Loans Receivable [Line Items]
Timeshare financing receivables, gross	$ 539,000,000			709,000,000
Interest receivable outstanding	$ 2,000,000			4,000,000
Financing receivable, weighted average interest rate (as a percent)	15.70%
Financing receivable, weighted average remaining term (in years)	7 years
Acquired | Minimum
Accounts Notes And Loans Receivable [Line Items]
Financing receivable, stated interest rate (as a percent)	2.00%
Acquired | Maximum
Accounts Notes And Loans Receivable [Line Items]
Financing receivable, stated interest rate (as a percent)	25.00%
Secured Debt
Accounts Notes And Loans Receivable [Line Items]
Total	$ 1,051,000,000			1,113,000,000
Secured Debt | Asset Pledged as Collateral
Accounts Notes And Loans Receivable [Line Items]
Timeshare financing receivables, gross	$ 0			$ 105,000,000
Timeshare Facility
Accounts Notes And Loans Receivable [Line Items]
Total			$ 293,000,000
5.72% Timeshare Facility
Accounts Notes And Loans Receivable [Line Items]
Total			$ 187,000,000
Debt instrument, stated interest rate (as a percent)			5.72%
6.11% Timeshare Facility
Accounts Notes And Loans Receivable [Line Items]
Total			$ 79,000,000
Debt instrument, stated interest rate (as a percent)			6.11%
6.94% Timeshare Facility
Accounts Notes And Loans Receivable [Line Items]
Total			$ 27,000,000
Debt instrument, stated interest rate (as a percent)			6.94%