Business Segment Information (Schedule of Net Sales To External Customers By Country Of Domicile) (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Segment Reporting Information [Line Items]
Total net sales to external customers	$ 590.0	$ 499.1
United States
Segment Reporting Information [Line Items]
Total net sales to external customers	261.5	224.3
Europe
Segment Reporting Information [Line Items]
Total net sales to external customers	203.8	168.3
Rest of world
Segment Reporting Information [Line Items]
Total net sales to external customers	$ 124.7	$ 106.5