Timeshare Financing Receivables - Financing Receivable by Average FICO Score (Details) - USD ($) $ in Millions		Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		$ 1,340	$ 1,292
More than 700
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		818	790
600-699
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		292	280
Less than 600
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		39	37
No score
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables	[1]	$ 191	$ 185

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