Business Segments - Schedule of Segment Operating Performance Reconciled to Consolidated Amounts (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
Segment Reporting, Revenue Reconciling Item [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
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues																		1,252		1,462		1,239
Resort Operations and Club Management Segment
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues																		418		390		337
Operating segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues																		1,706		1,884		1,606
Operating segments | Real Estate and Financing Segment
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues																		1,252		1,462		1,239
Operating segments | Resort Operations and Club Management Segment
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[2]																	454		422		367
Segment Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues																		168		147		135
Intersegment eliminations
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[2],[3]																	$ (36)		$ (32)		$ (30)

[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.

[2] Includes charges to the real estate sales and financing segment from the resort operations and club management segment for fulfillment of discounted marketing package stays at resorts. These charges totaled $35 million, $31 million and $29 million for the years ended December 31, 2019, 2018 and 2017, respectively.

[3] Includes charges to the real estate sales and financing segment from the resort operations and club management segment for the rental of model units to show prospective buyers. These charges totaled less than $2 million for the year ended December 31, 2019 and less than $1 million for each of the years ended December 31, 2018 and 2017, respectively