Business Segment Information (Schedule of Long-Lived Assets By Country Of Domicile) (Details) - USD ($) $ in Millions	Jan. 31, 2017	Oct. 31, 2016
Segment Reporting Information [Line Items]
Total long-lived assets	$ 879.1	$ 877.7
United States [Member]
Segment Reporting Information [Line Items]
Total long-lived assets	462.2	464.1
Europe [Member]
Segment Reporting Information [Line Items]
Total long-lived assets	336.1	334.4
Rest Of World [Member]
Segment Reporting Information [Line Items]
Total long-lived assets	$ 80.8	$ 79.2