Revenue from Contracts with Customers - Schedule of Disaggregated Revenues by Segment from Contracts with Customers (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation Of Revenue [Line Items]
Total revenues		$ 334	$ 123	$ 569	$ 474
Real Estate and Financing Segment
Disaggregation Of Revenue [Line Items]
Total revenues		194	56	317	262
Resort Operations and Club Management Segment
Disaggregation Of Revenue [Line Items]
Total revenues		102	44	179	140
Sales of VOIs, Net
Disaggregation Of Revenue [Line Items]
Total revenues		76		109	56
Sales of VOIs, Net | Real Estate and Financing Segment
Disaggregation Of Revenue [Line Items]
Total revenues		76	0	109	56
Sales, Marketing, Brand and Other Fees
Disaggregation Of Revenue [Line Items]
Total revenues		81	13	134	119
Sales, Marketing, Brand and Other Fees | Real Estate and Financing Segment
Disaggregation Of Revenue [Line Items]
Total revenues		81	13	134	119
Interest Income | Real Estate and Financing Segment
Disaggregation Of Revenue [Line Items]
Total revenues		31	36	62	74
Other Financing Revenue | Real Estate and Financing Segment
Disaggregation Of Revenue [Line Items]
Total revenues		6	7	12	13
Club Management | Resort Operations and Club Management Segment
Disaggregation Of Revenue [Line Items]
Total revenues		29	22	56	47
Resort Management | Resort Operations and Club Management Segment
Disaggregation Of Revenue [Line Items]
Total revenues		19	17	37	36
Rental | Resort Operations and Club Management Segment
Disaggregation Of Revenue [Line Items]
Total revenues	[1]	50	5	80	52
Ancillary Services | Resort Operations and Club Management Segment
Disaggregation Of Revenue [Line Items]
Total revenues		$ 4	$ 0	$ 6	$ 5

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