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 (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	May 31, 2014	Nov. 30, 2013
Fair Value Disclosures [Abstract]
Aggregate fair value of loans	$ 0	$ 0