FINANCIAL INSTRUMENTS - Schedule of Carrying Values and Estimated Fair Values (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Vacation ownership notes receivable, net	$ 2,567	$ 2,565
Contracts receivable for financed VOI sales, net	72	95
Other assets	165	168
Total financial assets	2,804	2,828
Total financial liabilities	(5,371)	(5,482)
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Vacation ownership notes receivable, net	2,658	2,645
Contracts receivable for financed VOI sales, net	72	95
Other assets	165	168
Total financial assets	2,895	2,908
Total financial liabilities	(5,343)	(5,474)
Securitized debt, net \| Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	(2,304)	(2,146)
Securitized debt, net \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	(2,343)	(2,196)
2028 Notes, net \| Senior notes \| Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	(349)	(348)
2028 Notes, net \| Senior notes \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	(345)	(346)
2029 Notes, net \| Senior notes \| Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	(497)	(497)
2029 Notes, net \| Senior notes \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	(472)	(479)
2033 Notes \| Senior notes \| Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	(567)	(567)
2033 Notes \| Senior notes \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	(547)	(553)
2026 Convertible Notes, net \| Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Convertible notes, net	0	(575)
2026 Convertible Notes, net \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Convertible notes, net	0	(564)
2027 Convertible Notes, net \| Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Convertible notes, net	(570)	(569)
2027 Convertible Notes, net \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Convertible notes, net	(542)	(548)
Line of Credit \| Term Loan, net \| Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	(778)	(780)
Line of Credit \| Term Loan, net \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	(784)	(788)
Line of Credit \| Revolving Corporate Credit Facility, net \| Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	(306)	0
Line of Credit \| Revolving Corporate Credit Facility, net \| Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	$ (310)	$ 0

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

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