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TIMESHARE FINANCING RECEIVABLES - Schedule of Timeshare Financing Receivables (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025	Mar. 31, 2025	Dec. 31, 2024
Accounts Notes And Loans Receivable [Line Items]
Timeshare financing receivables, net	$ 3,130	$ 3,115
Originated
Accounts Notes And Loans Receivable [Line Items]
Timeshare financing receivables, gross	3,764	3,665
Unamortized non-credit acquisition premium	0	0
Less: allowance for financing receivables losses	(1,116)	(1,078)	$ (865)	$ (804)
Timeshare financing receivables, net	2,648	2,587
Acquired
Accounts Notes And Loans Receivable [Line Items]
Timeshare financing receivables, gross	594	649
Unamortized non-credit acquisition premium	32	34
Less: allowance for financing receivables losses	(144)	(155)	$ (232)	$ (268)
Timeshare financing receivables, net	482	528
Securitized | Originated
Accounts Notes And Loans Receivable [Line Items]
Timeshare financing receivables, gross	1,564	1,734
Securitized | Acquired
Accounts Notes And Loans Receivable [Line Items]
Timeshare financing receivables, gross	339	373
Unsecuritized | Originated
Accounts Notes And Loans Receivable [Line Items]
Timeshare financing receivables, gross	2,200	1,931
Unsecuritized | Acquired
Accounts Notes And Loans Receivable [Line Items]
Timeshare financing receivables, gross	$ 255	$ 276

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Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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