Employee Benefits (Schedule of Amount Recognized in Statement of Financial Position) (Details) - USD ($) $ in Millions	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Noncurrent asset	$ 0.0	$ 0.0	$ 0.0
Current liability	0.0	0.0	0.0
Noncurrent liabilities	(38.9)	(49.7)	(37.8)
Net amount recognized at year end	$ (38.9)	$ (49.7)	$ (37.8)