Accounts Receivable - Summary of Accounts Receivable, Net of Allowance for Credit Losses (Details) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Accounts Notes And Loans Receivable [Line Items]
Accounts receivable, net of allowance for doubtful accounts of $20 and $21		$ 119	$ 174
Fee-for-Service Commission
Accounts Notes And Loans Receivable [Line Items]
Accounts receivable, net of allowance for doubtful accounts of $20 and $21	[1]	22
Real Estate and Financing Segment
Accounts Notes And Loans Receivable [Line Items]
Accounts receivable, net of allowance for doubtful accounts of $20 and $21		11
Resort and Club Management
Accounts Notes And Loans Receivable [Line Items]
Accounts receivable, net of allowance for doubtful accounts of $20 and $21		23
Tax Receivables
Accounts Notes And Loans Receivable [Line Items]
Accounts receivable, net of allowance for doubtful accounts of $20 and $21		54
Other Receivables
Accounts Notes And Loans Receivable [Line Items]
Accounts receivable, net of allowance for doubtful accounts of $20 and $21	[2]	$ 9

[1] Net of allowance.

[2] Primarily includes individually insignificant accounts receivable recognized in the ordinary course of business, the allowances for which are individually insignificant.