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 (Detail) - USD ($) $ in Thousands	Feb. 28, 2018	Nov. 30, 2017
Financial instruments owned:
Loans and other receivables	$ 933,508	$ 752,076
Loans and other receivables on nonaccrual status and/or 90 days or greater past due	222,548	159,462
Long-term debt and short-term borrowings	62,094	32,839
Loans and other receivables 90 days or greater past due	$ 33,800	$ 38,700