Fair Value Measurements (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Level 1
Assets:
Timeshare financing receivables	$ 0	$ 0
Liabilities:
Debt	318	314
Non-recourse debt	0	0
Level 3
Assets:
Timeshare financing receivables	1,142	1,147
Liabilities:
Debt	192	200
Non-recourse debt	699	696
Carrying Amount
Assets:
Timeshare financing receivables	1,017	1,025
Liabilities:
Debt	488	490
Carrying Amount | Non-recourse Debt
Liabilities:
Non-recourse debt	$ 695	$ 694