Revenue from Contracts with Customers - Schedule of Disaggregated Revenues by Segment from Contracts with Customers (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation Of Revenue [Line Items]
Total revenues		$ 208	$ 466	$ 682	$ 1,370
Sales of VOIs, Net
Disaggregation Of Revenue [Line Items]
Total revenues		24	138	80	383
Sales, Marketing, Brand and Other Fees
Disaggregation Of Revenue [Line Items]
Total revenues		52	143	171	429
Real Estate and Financing Segment
Disaggregation Of Revenue [Line Items]
Total revenues		116	324	378	939
Real Estate and Financing Segment | Sales of VOIs, Net
Disaggregation Of Revenue [Line Items]
Total revenues		24	138	80	383
Real Estate and Financing Segment | Sales, Marketing, Brand and Other Fees
Disaggregation Of Revenue [Line Items]
Total revenues		52	143	171	429
Real Estate and Financing Segment | Interest Income
Disaggregation Of Revenue [Line Items]
Total revenues		34	37	108	109
Real Estate and Financing Segment | Other Financing Revenue
Disaggregation Of Revenue [Line Items]
Total revenues		6	6	19	18
Resort Operations and Club Management Segment
Disaggregation Of Revenue [Line Items]
Total revenues		59	99	199	303
Resort Operations and Club Management Segment | Club Management
Disaggregation Of Revenue [Line Items]
Total revenues		23	28	70	80
Resort Operations and Club Management Segment | Resort Management
Disaggregation Of Revenue [Line Items]
Total revenues		16	17	52	50
Resort Operations and Club Management Segment | Rental
Disaggregation Of Revenue [Line Items]
Total revenues	[1]	19	48	71	153
Resort Operations and Club Management Segment | Ancillary Services
Disaggregation Of Revenue [Line Items]
Total revenues		$ 1	$ 6	$ 6	$ 20

[1] Excludes intersegment eliminations. See Note 18: Business Segments for additional information.