VACATION OWNERSHIP NOTES RECEIVABLE - Additional Information (Details) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable reserve			$ 130	$ 73
Average estimated rate of default for all outstanding loans	11.66%		11.66%		11.75%
Estimated default rate increases that would have resulted an increase in allowance for credit losses	0.50%		0.50%
Financing receivable, allowance for credit losses, that would have been increased	$ 12		$ 12		$ 10
Weighted average FICO score within originated loan pool	720		720
Legacy-ILG and Legacy-Welk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted average FICO score within originated loan pool					707
Sale of vacation ownership products
Accounts, Notes, Loans and Financing Receivable [Line Items]
Reduction of sales	$ 76	$ 71	$ 216	$ 178
Sale of vacation ownership products | Stabilization of Defaults and the Alignment and Combination of the Reserves
Accounts, Notes, Loans and Financing Receivable [Line Items]
Reduction of sales	21
COVID-19 Pandemic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable reserve						$ 69
Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase (decrease) in vacation ownership notes receivable reserve			128
Originated | Stabilization of Defaults and the Alignment and Combination of the Reserves
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase (decrease) in vacation ownership notes receivable reserve	21
Originated | COVID-19 Pandemic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase (decrease) in vacation ownership notes receivable reserve					$ 59
Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase (decrease) in vacation ownership notes receivable reserve			$ (19)
Acquired | Stabilization of Defaults and the Alignment and Combination of the Reserves
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase (decrease) in vacation ownership notes receivable reserve	$ (19)
Acquired | COVID-19 Pandemic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase (decrease) in vacation ownership notes receivable reserve					$ 10