Employee Retirement and Deferred Compensation Plans (Details Textual) $ in Millions	12 Months Ended
	Oct. 31, 2020 USD ($) numberOfRetirementPlans	Oct. 31, 2019 USD ($)	Oct. 31, 2018 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Cost	$ 6.1	$ 14.1	$ 12.6
Number of Unfunded Defined Benefit Retirement Plans | numberOfRetirementPlans	2
Normal retirement age	58
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	1.95%	2.61%	4.06%
Defined Benefit Plan Unfunded Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Accrued for obligations under the plan	$ 35.1	$ 31.1