TIMESHARE FINANCING RECEIVABLES - Schedule of Past Due Financing Receivables (Details) - USD ($) $ in Millions	Jun. 30, 2026	Apr. 30, 2026	Dec. 31, 2025
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	$ 4,978		$ 4,314
Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	4,127		3,631
Current \| Elara Acquisition
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	414
31 - 90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	111		101
31 - 90 days past due \| Elara Acquisition
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	10
91 - 120 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	42		40
91 - 120 days past due \| Elara Acquisition
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	4
121 days and greater past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	698		542
121 days and greater past due \| Elara Acquisition
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	66
Securitized
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	300	$ 500
Originated
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	3,970		3,665
Originated \| Securitized
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	2,116		1,734
Originated \| Securitized \| Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	2,030		1,667
Originated \| Securitized \| 31 - 90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	51		45
Originated \| Securitized \| 91 - 120 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	20		16
Originated \| Securitized \| 121 days and greater past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	15		6
Originated \| Unsecuritized
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	1,854		1,931
Originated \| Unsecuritized \| Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	1,337		1,482
Originated \| Unsecuritized \| 31 - 90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	38		41
Originated \| Unsecuritized \| 91 - 120 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	12		16
Originated \| Unsecuritized \| 121 days and greater past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	467		392
Acquired
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	1,008		649
Acquired \| Securitized
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	583		373
Acquired \| Securitized \| Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	557		357
Acquired \| Securitized \| 31 - 90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	16		9
Acquired \| Securitized \| 91 - 120 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	6		6
Acquired \| Securitized \| 121 days and greater past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	4		1
Acquired \| Unsecuritized
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	425		276
Acquired \| Unsecuritized \| Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	203		125
Acquired \| Unsecuritized \| 31 - 90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	6		6
Acquired \| Unsecuritized \| 91 - 120 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	4		2
Acquired \| Unsecuritized \| 121 days and greater past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Timeshare financing receivables, gross	$ 212		$ 143