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		6 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2013	Apr. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	$ 6.8	$ 4.9	$ 16.7	$ 12.7
Related income tax benefit	1.9	1.5	4.9	4.0
Selling, general and administrative expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	5.5	4.2	14.0	10.7
Cost of sales [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	0.5	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	0.3	0.3	0.7	0.6
Capitalized in inventory [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 0.5	$ 0.2	$ 1.0	$ 0.7