Share-Based Compensation (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2025	Jul. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	$ 16.2	$ 17.6	$ 55.3	$ 58.7
Related income tax benefit	1.8	1.0	7.5	5.8
Selling, general and administrative expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	14.5	15.8	49.7	53.0
Cost of sales
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	1.0	1.3	3.5	3.6
Research and development expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	$ 0.7	$ 0.5	$ 2.1	$ 2.1