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ACQUISITIONS AND DISPOSITIONS - Dispositions (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Reclassification of foreign currency translation adjustments realized upon disposition of entities	$ 0	$ 0		$ 0	$ 10
VRI Americas \| Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from disposals			$ 56
Restricted cash			12
Assets			51
Goodwill from sale			25
Intangible assets			20
Gain on disposal		$ 1			17
Vacation Ownership \| Discontinued Operations, Disposed of by Sale \| Puerto Vallarta, Mexico
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from disposals			38
Restricted cash			3
Gain on disposal			33
Cumulative translation adjustment			$ 18
Reclassification of foreign currency translation adjustments realized upon disposition of entities					$ 10