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Stock Compensation - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
9 Months Ended
Jul. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Unamortized share-based compensation expense $ 155.6
Weighted-average period of total compensation costs to be recognized in years 2 years 8 months 12 days