Business Segment Information (Schedule of Net Sales To External Customers By Country Of Domicile) (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2019	Jan. 31, 2018
Segment Reporting Information [Line Items]
Total net sales to external customers	$ 628.1	$ 590.0
United States
Segment Reporting Information [Line Items]
Total net sales to external customers	278.9	261.5
Europe
Segment Reporting Information [Line Items]
Total net sales to external customers	209.7	203.8
Rest of world
Segment Reporting Information [Line Items]
Total net sales to external customers	$ 139.5	$ 124.7