Stock Plans - Narrative (Details) $ / shares in Units, $ in Millions				1 Months Ended	12 Months Ended
	Feb. 16, 2024	Mar. 31, 2023 director shares	Mar. 18, 2019 shares	Mar. 31, 2016 director shares	Oct. 31, 2024 USD ($) $ / shares shares	Oct. 31, 2023 USD ($) $ / shares shares	Oct. 31, 2022 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock split, conversion ratio	4
Total unrecognized compensation cost related to nonvested options					$ 8.2
Share-based compensation expense					$ 75.1	$ 62.1	$ 54.2
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					1 year 8 months 12 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 6 months
Total unrecognized compensation cost related to nonvested units					$ 68.7
Fair value of vested grants					$ 40.9	$ 37.3	$ 46.1
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					$ 16.9
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				27,720,000
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		5,460,000
Shares remaining for future grant (in shares) | shares					4,852,018
Third Amended And Restated 2007 Long-Term Incentive Plan And 2023 Long-Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average fair value of each option granted (in dollars per share) | $ / shares					$ 26.54	$ 25.79	$ 22.60
Total intrinsic value of options exercised					$ 51.3	$ 13.4	$ 6.6
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]
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			4,000,000
Exercise price percentage of fair market value on date of grant of awards			85.00%
Number of shares issued to employees | shares					107,031	104,464
Number of shares remaining available for future issuance | shares					3,580,869
Share-based compensation expense					$ 1.6	$ 1.3