Post Retirement Benefit Plans - Benefit Obligations in Excess of Plan Assets (Details) - USD ($) $ in Millions	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Plan assets	$ 1,002.1	$ 1,017.0
Pension Plan
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Projected benefit obligation	1,110.3	1,158.7	$ 662.4
Accumulated benefit obligation	1,086.1	1,131.3
Plan assets	1,002.1	1,017.0	594.8
Plans with accumulated benefit obligation in excess of plan assets, accumulated benefit obligation	812.2	860.9
Plans with accumulated benefit obligations in excess of plan assets, Plan assets	697.2	709.7
Pension Plan | United States
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Projected benefit obligation	782.0	831.0	351.9
Accumulated benefit obligation	760.3	806.8
Plan assets	687.0	698.7	311.9
Plans with accumulated benefit obligation in excess of plan assets, accumulated benefit obligation	760.3	806.8
Plans with accumulated benefit obligations in excess of plan assets, Plan assets	687.2	698.9
Pension Plan | Germany
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Projected benefit obligation	42.1	44.1	38.1
Accumulated benefit obligation	41.0	42.6
Plan assets	0.0	0.0	0.0
Plans with accumulated benefit obligation in excess of plan assets, accumulated benefit obligation	41.0	42.6
Plans with accumulated benefit obligations in excess of plan assets, Plan assets	0.0	0.0
Pension Plan | United Kingdom
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Projected benefit obligation	184.6	180.8	176.3
Accumulated benefit obligation	184.6	180.8
Plan assets	210.0	209.8	178.7
Plans with accumulated benefit obligation in excess of plan assets, accumulated benefit obligation	0.0	0.0
Plans with accumulated benefit obligations in excess of plan assets, Plan assets	0.0	0.0
Pension Plan | Netherlands
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Projected benefit obligation	90.9	91.3	85.4
Accumulated benefit obligation	89.3	89.6
Plan assets	92.0	94.5	90.6
Plans with accumulated benefit obligation in excess of plan assets, accumulated benefit obligation	0.0	0.0
Plans with accumulated benefit obligations in excess of plan assets, Plan assets	0.0	0.0
Pension Plan | Other International
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Projected benefit obligation	10.7	11.5	10.7
Accumulated benefit obligation	10.9	11.5
Plan assets	13.1	14.0	$ 13.6
Plans with accumulated benefit obligation in excess of plan assets, accumulated benefit obligation	10.9	11.5
Plans with accumulated benefit obligations in excess of plan assets, Plan assets	$ 10.0	$ 10.8