Consolidated Variable Interest Entities (Details) $ in Millions	Mar. 31, 2017 USD ($) entity	Dec. 31, 2016 USD ($) entity
Variable Interest Entity [Line Items]
Number of variable interest entities consolidated | entity	3	2
Assets, variable interest entity	$ 576	$ 258
Liabilities, variable interest entity	569	245
Variable Interest Entity, Primary Beneficiary | Restricted cash
Variable Interest Entity [Line Items]
Assets, variable interest entity	32	10
Variable Interest Entity, Primary Beneficiary | Timeshare financing receivables, net
Variable Interest Entity [Line Items]
Assets, variable interest entity	540	244
Variable Interest Entity, Primary Beneficiary | Non-recourse debt
Variable Interest Entity [Line Items]
Liabilities, variable interest entity	$ 567	$ 244