VACATION OWNERSHIP NOTES RECEIVABLE - Schedule of Composition of Vacation Ownership Notes Receivable Balances, Net of Reserves (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable, net	$ 2,567	$ 2,565
Securitized
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable, net	2,070	1,900
Non-securitized
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable, net	497	665
Eligible for securitization
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable, net	93	152
Not eligible for securitization
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable, net	404	513
Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable, net	2,511	2,503
Originated \| Securitized
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable, net	2,021	1,843
Originated \| Non-securitized
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable, net	490	660
Originated \| Eligible for securitization
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable, net	93	152
Originated \| Not eligible for securitization
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable, net	397	508
Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable, net	56	62
Acquired \| Securitized
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable, net	49	57
Acquired \| Non-securitized
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable, net	7	5
Acquired \| Eligible for securitization
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable, net	0	0
Acquired \| Not eligible for securitization
Accounts, Notes, Loans and Financing Receivable [Line Items]
Vacation ownership notes receivable, net	$ 7	$ 5