Revenue from Contracts with Customers - Schedule of Disaggregated Revenues by Segment from Contracts with Customers (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Disaggregation Of Revenue [Line Items]
Total revenues		$ 450	$ 367
Sales of VOIs, Net
Disaggregation Of Revenue [Line Items]
Total revenues		125	78
Sales, Marketing, Brand and Other Fees
Disaggregation Of Revenue [Line Items]
Total revenues		141	125
Real Estate and Financing Segment
Disaggregation Of Revenue [Line Items]
Total revenues		307	241
Real Estate and Financing Segment | Sales of VOIs, Net
Disaggregation Of Revenue [Line Items]
Total revenues		125	78
Real Estate and Financing Segment | Sales, Marketing, Brand and Other Fees
Disaggregation Of Revenue [Line Items]
Total revenues		141	125
Real Estate and Financing Segment | Interest Income
Disaggregation Of Revenue [Line Items]
Total revenues		36	34
Real Estate and Financing Segment | Other Financing Revenue
Disaggregation Of Revenue [Line Items]
Total revenues		5	4
Resort Operations and Club Management Segment
Disaggregation Of Revenue [Line Items]
Total revenues		101	98
Resort Operations and Club Management Segment | Club Management
Disaggregation Of Revenue [Line Items]
Total revenues		26	23
Resort Operations and Club Management Segment | Resort Management
Disaggregation Of Revenue [Line Items]
Total revenues		16	16
Resort Operations and Club Management Segment | Rental
Disaggregation Of Revenue [Line Items]
Total revenues	[1]	52	53
Resort Operations and Club Management Segment | Ancillary Services
Disaggregation Of Revenue [Line Items]
Total revenues		$ 7	$ 6

[1] ^{Includes intersegment eliminations}