FINANCIAL INSTRUMENTS - Carrying Values and Estimated Fair Values (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Vacation ownership notes receivable, net	$ 2,446	$ 2,440
Contracts receivable for financed VOI sales, net	50	46
Other assets	130	131
Total financial assets	2,626	2,617
Total financial liabilities	(5,099)	(5,026)
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Vacation ownership notes receivable, net	2,510	2,508
Contracts receivable for financed VOI sales, net	50	46
Other assets	130	131
Total financial assets	2,690	2,685
Total financial liabilities	(5,025)	(4,958)
Securitized debt, net \| Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	(2,147)	(2,136)
Securitized debt, net \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	(2,166)	(2,147)
2028 Notes, net \| Senior notes \| Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	(348)	(348)
2028 Notes, net \| Senior notes \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	(333)	(336)
2029 Notes, net \| Senior notes \| Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	(496)	(496)
2029 Notes, net \| Senior notes \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	(460)	(467)
2026 Convertible Notes, net \| Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Convertible notes, net	(572)	(572)
2026 Convertible Notes, net \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Convertible notes, net	(551)	(546)
2027 Convertible Notes, net \| Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Convertible notes, net	(567)	(566)
2027 Convertible Notes, net \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Convertible notes, net	(533)	(541)
Line of Credit \| Term Loan, net \| Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	(784)	(786)
Line of Credit \| Term Loan, net \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	(792)	(796)
Line of Credit \| Revolving Corporate Credit Facility, net \| Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	(185)	(122)
Line of Credit \| Revolving Corporate Credit Facility, net \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	$ (190)	$ (125)

Fair value portion of asset recognized for present right to economic benefit.

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities.

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Fair value portion of an agreement for an unconditional promise by the maker to pay the holder a definite sum of money at a future date.

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- Definition

Fair value portion of other assets.

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Contracts Receivable, Fair Value Disclosure

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