Restricted Cash - Schedule of Restricted Cash (Details) - USD ($) $ in Millions		Sep. 30, 2020	Dec. 31, 2019
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash		$ 92	$ 85
Escrow deposits on VOI sales
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash		61	59
Reserves related to non-recourse debt
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	[1]	$ 31	$ 26

[1]  See Note 11: Debt & Non-recourse Debt for further discussion.