BUSINESS SEGMENTS - Adjusted EBITDA (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Corporate and other	$ (50)	$ (60)
Interest expense	(33)	(34)
Tax benefit (provision)	58	(15)
Depreciation and amortization	(32)	(37)
Share-based compensation expense	(4)	(9)
Certain items	(233)	(47)
Net (loss) income attributable to common shareholders	(106)	24
Vacation Ownership
Segment Reporting Information [Line Items]
Adjusted earnings before income taxes depreciation and amortization	147	172
Exchange & Third-Party Management
Segment Reporting Information [Line Items]
Adjusted earnings before income taxes depreciation and amortization	$ 41	$ 54

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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