Diamond Acquisition - Schedule of Preliminary Fair Values of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions		9 Months Ended
	Aug. 02, 2021	Sep. 30, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Timeshare financing receivables, net		$ 1,767	$ 974
Operating lease right-of-use assets, net		76	52
Advanced deposits		116	117
Goodwill		820	$ 0
Diamond Acquisition
Business Acquisition [Line Items]
Cash and cash equivalents	$ 314
Restricted cash	130
Accounts receivable, net of allowance for doubtful accounts	58
Timeshare financing receivables, net	841
Inventory	745
Property and equipment, net	307
Operating lease right-of-use assets, net	30
Intangible assets, net	1,906
Other assets	243
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets, Total	4,574
Accounts payable, accrued expenses and other	448
Debt, net	14
Non-recourse debt, net		661
Operating lease liabilities	33
Advanced deposits	4
Deferred revenues	173
Deferred income tax liabilities	651
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities, Total	1,984
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net, Total	2,590
Total consideration transferred	3,410	$ 3,410
Goodwill	$ 820