Employee Benefits (Schedule of Components of Net Periodic Pension Costs) (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
General Discussion of Pension and Other Postretirement Benefits [Abstract]
Service cost	$ 2.5	$ 2.3
Interest cost	1.1	1.2
Expected return on plan assets	(1.8)	(1.6)
Recognized net actuarial loss	0.7	0.4
Net periodic pension cost	$ 2.5	$ 2.3