Quarterly report pursuant to Section 13 or 15(d)

Vacation Ownership Contract Receivables (Allowance For Loan Losses On Vacation Ownership Contract Receivables) (Details)

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Vacation Ownership Contract Receivables (Allowance For Loan Losses On Vacation Ownership Contract Receivables) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Allowance for Loan Losses [Roll Forward]        
Financing Receivable, Allowance for Credit Loss, Beginning Balance     $ 693 $ 747
Provision for loan losses $ 33 $ 30 71 345
Contract receivables write-offs, net     (191) (246)
Financing Receivable, Allowance for Credit Loss, Ending Balance $ 573 $ 846 $ 573 $ 846