Timeshare Financing Receivables - Financing Receivable by FICO Score (Details) - USD ($) $ in Millions		Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		$ 1,318	$ 1,292
More than 700
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		802	790
600-699
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		289	280
Less than 600
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		38	37
No score
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables	[1]	$ 189	$ 185

[1] Timeshare financing receivables without a FICO score are primarily related to foreign borrowers.