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Employee Benefits (Schedule of Amounts Recognized in Accumulated Other Comprehensive Income) (Details) - USD ($)
$ in Millions
Oct. 31, 2015
Oct. 31, 2014
Oct. 31, 2013
Compensation and Retirement Disclosure [Abstract]      
Net transition obligation $ 0.0 $ 0.0 $ 0.0
Prior service cost 0.0 0.0 0.0
Net loss 32.1 22.1 16.0
Accumulated other comprehensive income $ 32.1 $ 22.1 $ 16.0