Fair Value Disclosures - Summary of Amount by Which Contractual Principal Exceeds Fair Value for Loans and Other Receivables Measured at Fair Value Under Fair Value Option (Details) - USD ($) $ in Thousands	Nov. 30, 2020	Nov. 30, 2019
Fair Value Disclosures [Abstract]
Loans and other receivables	$ 1,662,647	$ 1,546,516
Loans and other receivables on nonaccrual status and/or 90 days or greater past due	287,889	197,215
Long-term debt and short-term borrowings	(42,819)	74,408
Other secured financings	2,782	0
Loans and other receivables 90 days or greater past due	$ 30,000	$ 22,200