VACATION OWNERSHIP NOTES RECEIVABLE - Additional Information (Details) - USD ($)	3 Months Ended		12 Months Ended
	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average estimated rate of default for all outstanding loans	6.74%		6.74%	6.74%
Financing receivable, allowance for credit losses, that would have been increased	$ 6,000,000		$ 6,000,000	$ 6,000,000
Sale of vacation ownership products
Accounts, Notes, Loans and Financing Receivable [Line Items]
Expenses			$ 250,000,000	$ 150,000,000	$ 349,000,000
Legacy MVW
Accounts, Notes, Loans and Financing Receivable [Line Items]
Estimated default rate increases that would have resulted an increase in allowance for credit losses			0.50%
Legacy-ILG and Legacy-Welk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average estimated rate of default for all outstanding loans	14.63%		17.33%	14.63%
Estimated default rate increases that would have resulted an increase in allowance for credit losses			0.50%
Financing receivable, allowance for credit losses, that would have been increased	$ 3,000,000		$ 4,000,000	$ 3,000,000
Weighted average FICO score within originated loan pool	708		707	708
COVID-19 pandemic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit loss, period increase		$ 52,000,000	$ 0
Allowance for loan and lease losses, period increase	$ 17,000,000
COVID-19 pandemic | Sale of vacation ownership products
Accounts, Notes, Loans and Financing Receivable [Line Items]
Expenses				$ 19,000,000