Stock-Based Benefit Plans (Details Textual) (USD $)
In Millions, unless otherwise specified |
Jan. 31, 2015
|
Oct. 31, 2014
|
---|---|---|
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] | ||
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized | $ 39.7 | $ 24.0 |