Timeshare Financing Receivables - Financing Receivable by Average FICO Score (Details) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		$ 1,185	$ 1,340
More than 700
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		711	818
600-699
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		266	292
Less than 600
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		36	39
No score
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables	[1]	$ 172	$ 191

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