Stock Plans - Narrative (Details) $ / shares in Units, $ in Millions			1 Months Ended	12 Months Ended
	Mar. 31, 2023 director shares	Mar. 18, 2019 shares	Mar. 31, 2016 director shares	Oct. 31, 2023 USD ($) $ / shares shares	Oct. 31, 2022 USD ($) $ / shares shares	Oct. 31, 2021 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost related to nonvested options				$ 17.6
Share-based compensation expense				$ 62.1	$ 54.2	$ 44.7
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost expected to be recognized over a remaining weighted-average vesting period				2 years 1 month 6 days
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost expected to be recognized over a remaining weighted-average vesting period				2 years 4 months 24 days
Total unrecognized compensation cost related to nonvested units				$ 63.1
Fair value of vested grants				$ 37.3	46.1	50.1
Performance Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				3 years
Total unrecognized compensation cost expected to be recognized over a remaining weighted-average vesting period				1 year 8 months 12 days
Total unrecognized compensation cost related to nonvested units				$ 12.3
Performance Units | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target percentage of shares earned				0.00%
Performance Units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target percentage of shares earned				200.00%
Third Amended and Restated 2007 Long-Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of non-employee directors in committee | director			2
Number of shares authorized to be granted | shares			6,930,000
2023 Long-Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of non-employee directors in committee | director	2
Number of shares authorized to be granted | shares	1,365,000
Shares remaining for future grant (in shares) | shares				1,376,240
Third Amended And Restated 2007 Long-Term Incentive Plan And 2023 Long-Term Incentive Plan | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total intrinsic value of options exercised				$ 13.4	$ 6.6	$ 64.7
Weighted-average fair value of each option granted (in dollars per share) | $ / shares				$ 103.17	$ 90.41	$ 84.10
Award expiration date (no more than)				10 years
Third Amended And Restated 2007 Long-Term Incentive Plan And 2023 Long-Term Incentive Plan | Stock Options | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				3 years
Third Amended And Restated 2007 Long-Term Incentive Plan And 2023 Long-Term Incentive Plan | Stock Options | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				5 years
Third Amended And Restated 2007 Long-Term Incentive Plan And 2023 Long-Term Incentive Plan | Restricted Stock Units (RSUs) | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				3 years
Third Amended And Restated 2007 Long-Term Incentive Plan And 2023 Long-Term Incentive Plan | Restricted Stock Units (RSUs) | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				5 years
Employee Stock Purchase Plan | Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized to be granted | shares		1,000,000
Exercise price percentage of fair market value on date of grant of awards		85.00%
Number of shares issued to employees | shares				26,116	22,695
Number of shares remaining available for future issuance | shares				921,975
Share-based compensation expense				$ 1.3	$ 1.1