Employee Benefits - Components of Net Periodic Pension Costs and Other Amounts Recognized in Other Comprehensive Income (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2021
Components of net periodic benefit cost and other amounts recognized in the Consolidated Statements of Income:
Service cost	$ 10.0	$ 18.3	$ 17.2
Interest cost	$ 7.9	$ 5.1	$ 4.4
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)
Expected return on plan assets	$ (11.1)	$ (15.5)	$ (12.5)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Immediate Recognition of Actuarial Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)
Recognized actuarial loss	$ 0.0	$ 2.2	$ 5.4
Net periodic pension cost	$ 6.8	$ 10.1	$ 14.5