Summary of Significant Accounting Policies - Rollforward of Automobile Allowance for Credit Loss (Details) - Automobile Loan - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
May 31, 2022	May 31, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 70,109	$ 67,236
Provision for doubtful accounts	8,935	16,480
Charge-offs, net of recoveries	(3,384)	(8,056)
Ending balance	$ 75,660	$ 75,660

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Name:	us-gaap_FinancingReceivableAllowanceForCreditLosses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant