Post Retirement Benefit Plans - Components of Net Periodic Cost for Postretirement Benefits (Details) - Pension Plan - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 12.8	$ 14.1	$ 12.3
Interest cost	25.9	31.0	18.9
Expected return on plan assets	(37.9)	(38.8)	(25.5)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	(0.1)	(0.1)	(0.2)
Recognized net actuarial loss	13.2	7.1	11.0
Other Adjustments			(2.8)
Special Events
Settlement	0.3		1.3
Net periodic pension (benefit) cost	14.2	13.3	20.6
United States
Defined Benefit Plan Disclosure [Line Items]
Service cost	11.5	12.7	10.8
Interest cost	22.4	25.4	13.2
Expected return on plan assets	(31.4)	(30.5)	(16.8)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	(0.1)	(0.1)	(0.1)
Recognized net actuarial loss	10.2	5.0	8.1
Other Adjustments			0.0
Special Events
Settlement	(0.1)		0.0
Net periodic pension (benefit) cost	12.5	12.5	15.2
Germany
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.4	0.3	0.4
Interest cost	0.2	0.5	0.5
Expected return on plan assets	0.0	0.0	0.0
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	0.0	0.0	0.0
Recognized net actuarial loss	1.8	0.9	1.1
Other Adjustments			0.0
Special Events
Settlement	0.0		0.0
Net periodic pension (benefit) cost	2.4	1.7	2.0
United Kingdom
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.5	0.5	0.5
Interest cost	2.7	3.9	4.0
Expected return on plan assets	(5.2)	(6.2)	(6.5)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	0.1	0.1	0.0
Recognized net actuarial loss	1.1	1.2	1.7
Other Adjustments			(2.8)
Special Events
Settlement	0.4	1.3	1.3
Net periodic pension (benefit) cost	(0.4)	(0.5)	3.8
Netherlands
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.3	0.5	0.5
Interest cost	0.3	0.9	0.9
Expected return on plan assets	(0.7)	(1.3)	(1.4)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	(0.1)	(0.1)	(0.1)
Recognized net actuarial loss	0.0	0.0	0.0
Other Adjustments			0.0
Special Events
Settlement	0.0		0.0
Net periodic pension (benefit) cost	(0.2)	0.0	(0.1)
Other International
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.1	0.1	0.1
Interest cost	0.3	0.3	0.3
Expected return on plan assets	(0.6)	(0.8)	(0.8)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	0.0	0.0	0.0
Recognized net actuarial loss	0.1	0.0	0.1
Other Adjustments			0.0
Special Events
Settlement	0.0		0.0
Net periodic pension (benefit) cost	$ (0.1)	$ (0.4)	$ (0.3)