XML 69 R57.htm IDEA: XBRL DOCUMENT v3.4.0.3
Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Parenthetical) (Detail)
6 Months Ended
Apr. 30, 2016
Fair Value Disclosures [Abstract]  
Executive officers and other highly compensated employees salary and annual cash incentive compensation deferrals percentage, maximum 100.00%
Executive officers share-based long-term incentive compensation deferrals percentage, maximum 90.00%