Revenue from Contracts with Customers - Schedule of Disaggregated Revenues by Segment from Contracts with Customers (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Disaggregation Of Revenue [Line Items]
Sales of VOIs, net		$ 78	$ 118
Sales, marketing, brand and other fees		125	130
Total revenues		367	$ 399
Real Estate and Financing Segment
Disaggregation Of Revenue [Line Items]
Sales of VOIs, net		78
Sales, marketing, brand and other fees		125
Interest income		34
Other financing revenue		4
Total revenues		241
Resort Operation and Club Management Segment
Disaggregation Of Revenue [Line Items]
Club management		23
Resort management		16
Rental	[1]	53
Ancillary services		6
Total revenues		$ 98

[1] Includes intersegment eliminations.