Share-Based Compensation Plans (Schedule Of Compensation Expense And Related Income Tax Benefit For Share-Based Awards) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2012	Jul. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation expense	$ 4.9	$ 3.8	$ 17.6	$ 13.0
Related income tax benefit	1.5	1.1	5.5	3.9
Selling, General And Administrative Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	4.1	3.2	14.8	11.1
Cost Of Sales [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	0.3	0.2	1.0	0.7
Research And Development Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	0.2	0.2	0.8	0.5
Capitalized In Inventory [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 0.3	$ 0.2	$ 1.0	$ 0.7