Revenue from Contracts with Customers - Schedule of Disaggregated Revenues by Segment from Contracts with Customers (Details) - USD ($) $ in Millions	3 Months Ended																12 Months Ended
	Dec. 31, 2019	[1]	Sep. 30, 2019	[1]	Jun. 30, 2019	[1]	Mar. 31, 2019	[1]	Dec. 31, 2018	[1]	Sep. 30, 2018	[1]	Jun. 30, 2018	[1]	Mar. 31, 2018	[1]	Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
Disaggregation Of Revenue [Line Items]
Total revenues	$ 468		$ 466		$ 454		$ 450		$ 642		$ 427		$ 563		$ 367		$ 1,838	[1]	$ 1,999	[1]	$ 1,711
Real Estate and Financing Segment
Disaggregation Of Revenue [Line Items]
Total revenues																	1,252		1,462		1,239
Resort Operations and Club Management Segment
Disaggregation Of Revenue [Line Items]
Total revenues																	418		390		337
Sales of VOIs, Net
Disaggregation Of Revenue [Line Items]
Total revenues																	509		734		548
Sales of VOIs, Net | Real Estate and Financing Segment
Disaggregation Of Revenue [Line Items]
Total revenues																	509		734		548
Sales, Marketing, Brand and Other Fees
Disaggregation Of Revenue [Line Items]
Total revenues																	573		570		544
Sales, Marketing, Brand and Other Fees | Real Estate and Financing Segment
Disaggregation Of Revenue [Line Items]
Total revenues																	573		570		544
Interest Income | Real Estate and Financing Segment
Disaggregation Of Revenue [Line Items]
Total revenues																	147		140		132
Other Financing Revenue | Real Estate and Financing Segment
Disaggregation Of Revenue [Line Items]
Total revenues																	23		18		15
Club Management | Resort Operations and Club Management Segment
Disaggregation Of Revenue [Line Items]
Total revenues																	125		112		99
Resort Management | Resort Operations and Club Management Segment
Disaggregation Of Revenue [Line Items]
Total revenues																	66		60		59
Rental | Resort Operations and Club Management Segment
Disaggregation Of Revenue [Line Items]
Total revenues																	201		191		156
Ancillary Services | Resort Operations and Club Management Segment
Disaggregation Of Revenue [Line Items]
Total revenues																	$ 26		$ 27		$ 23

[1] The sum of the earnings per share for the four quarters may differ from annual earnings per share due to the required method of computing the weighted average shares in interim periods.