Restricted Cash - Schedule of Restricted Cash (Details) - USD ($) $ in Millions		Mar. 31, 2021	Dec. 31, 2020
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash		$ 105	$ 98
Escrow deposits on VOI sales
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash		76	69
Reserves related to non-recourse debt
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	[1]	$ 29	$ 29

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