Revenue from Contracts with Customers - Schedule of Disaggregated Revenues by Segment from Contracts with Customers (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation Of Revenue [Line Items]
Total revenues	$ 123	$ 454	$ 474	$ 904
Sales of VOIs, Net
Disaggregation Of Revenue [Line Items]
Total revenues		120	56	245
Sales, Marketing, Brand and Other Fees
Disaggregation Of Revenue [Line Items]
Total revenues	13	145	119	286
Real Estate and Financing Segment
Disaggregation Of Revenue [Line Items]
Total revenues	56	308	262	615
Real Estate and Financing Segment | Sales of VOIs, Net
Disaggregation Of Revenue [Line Items]
Total revenues		120	56	245
Real Estate and Financing Segment | Sales, Marketing, Brand and Other Fees
Disaggregation Of Revenue [Line Items]
Total revenues	13	145	119	286
Real Estate and Financing Segment | Interest Income
Disaggregation Of Revenue [Line Items]
Total revenues	36	36	74	72
Real Estate and Financing Segment | Other Financing Revenue
Disaggregation Of Revenue [Line Items]
Total revenues	7	7	13	12
Resort Operations and Club Management Segment
Disaggregation Of Revenue [Line Items]
Total revenues	44	103	140	204
Resort Operations and Club Management Segment | Club Management
Disaggregation Of Revenue [Line Items]
Total revenues	22	26	47	52
Resort Operations and Club Management Segment | Resort Management
Disaggregation Of Revenue [Line Items]
Total revenues	17	17	36	33
Resort Operations and Club Management Segment | Rental
Disaggregation Of Revenue [Line Items]
Total revenues	$ 5	53	52	105
Resort Operations and Club Management Segment | Ancillary Services
Disaggregation Of Revenue [Line Items]
Total revenues		$ 7	$ 5	$ 14