Timeshare Financing Receivables - Financing Receivable by Average FICO Score (Details) - USD ($) $ in Millions		Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		$ 1,147	$ 1,185
More than 700
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		685	711
600-699
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		256	266
Less than 600
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables		35	36
No score
Financing Receivable, Recorded Investment [Line Items]
Timeshare financing receivables	[1]	$ 171	$ 172

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