Employee Retirement and Deferred Compensation Plans (Details Textual) $ in Millions	12 Months Ended
	Oct. 31, 2017 USD ($)	Oct. 31, 2016 USD ($)	Oct. 31, 2015 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Cost	$ 12.3	$ 10.3	$ 8.9
Number of Unfunded Defined Benefit Retirement Plans	2
Normal retirement age	62
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	3.19%	2.98%	3.55%
Defined Benefit Plan Unfunded Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Accrued for obligations under the plan	$ 23.2	$ 24.6