BUSINESS SEGMENTS - Reconciliation of Adjusted EBITDA to Net Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Corporate and other	$ (58)	$ (63)
Interest expense, net	(40)	(34)
Tax provision	(35)	(41)
Depreciation and amortization	(38)	(32)
Share-based compensation expense	(7)	(7)
Certain items	(20)	(2)
NET INCOME ATTRIBUTABLE TO COMMON STOCKHOLDERS	47	87
Vacation Ownership
Segment Reporting Information [Line Items]
Adjusted earnings before income taxes depreciation and amortization	213	229
Exchange & Third-Party Management
Segment Reporting Information [Line Items]
Adjusted earnings before income taxes depreciation and amortization	$ 32	$ 37