Consolidated Variable Interest Entities - Schedule of Consolidated Variable Interest Entities (Details) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Variable Interest Entity [Line Items]
Assets, variable interest entity		$ 3,134	$ 3,079
Liabilities, variable interest entity		2,760	2,509
Variable Interest Entities
Variable Interest Entity [Line Items]
Assets, variable interest entity		800	748
Liabilities, variable interest entity		771	750
Variable Interest Entities | Restricted cash
Variable Interest Entity [Line Items]
Assets, variable interest entity		28	26
Variable Interest Entities | Timeshare financing receivables, net
Variable Interest Entity [Line Items]
Assets, variable interest entity		742	704
Variable Interest Entities | Non-recourse debt
Variable Interest Entity [Line Items]
Liabilities, variable interest entity	[1]	$ 766	$ 747

[1] Net of deferred financing costs.