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	May 31, 2020	Nov. 30, 2019
Fair Value Disclosures [Abstract]
Loans and other receivables	$ 1,881,470	$ 1,546,516
Loans and other receivables on nonaccrual status and/or 90 days or greater past due	331,340	197,215
Long-term debt and short-term borrowings	241,295	74,408
All loans and other receivables 90 days or greater past due	$ 27,200	$ 22,200