Timeshare Financing Receivables - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, weighted average interest rate (as a percent)	12.31%
Financing receivable, weighted average remaining term (in years)	7 years 8 months 12 days
Financing receivable weighted average maturities year	2031
Timeshare financing receivable not accruing interest	$ 68	$ 69
Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, stated interest rate (as a percent)	5.25%
Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, stated interest rate (as a percent)	20.50%
Non-recourse Debt
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross timeshare receivables securing the Timeshare Facility	$ 183	$ 190