Post Retirement Benefit Plans - Benefit Obligations in Excess of Plan Assets (Details) - USD ($) $ in Millions	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Plan assets	$ 1,017.0	$ 594.8	$ 568.6
United States
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Plan assets	698.7	311.9	268.6
Germany
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Plan assets	0.0	0.0	0.0
United Kingdom
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Plan assets	209.8	178.7	188.9
Netherlands
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Plan assets	94.5	90.6	97.5
Other International
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Plan assets	14.0	13.6	13.6
Pension Plan
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Projected benefit obligation	1,158.7	662.4	717.8
Accumulated benefit obligation	1,131.3	638.9
Plan assets	1,017.0	594.8
Plans with accumulated benefit obligation in excess of plan assets, accumulated benefit obligation	860.9	171.1
Plans with accumulated benefit obligations in excess of plan assets, Plan assets	709.7	94.7
Pension Plan | United States
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Projected benefit obligation	831.0	351.9	387.6
Accumulated benefit obligation	806.8	330.4
Plan assets	698.7	311.9
Plans with accumulated benefit obligation in excess of plan assets, accumulated benefit obligation	806.8	28.8
Plans with accumulated benefit obligations in excess of plan assets, Plan assets	698.9	0.0
Pension Plan | Germany
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Projected benefit obligation	44.1	38.1	39.9
Accumulated benefit obligation	42.6	37.2
Plan assets	0.0	0.0
Plans with accumulated benefit obligation in excess of plan assets, accumulated benefit obligation	42.6	37.2
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	180.8	176.3	186.9
Accumulated benefit obligation	180.8	176.3
Plan assets	209.8	178.7
Plans with accumulated benefit obligation in excess of plan assets, accumulated benefit obligation	0.0	104.6
Plans with accumulated benefit obligations in excess of plan assets, Plan assets	0.0	94.2
Pension Plan | Netherlands
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Projected benefit obligation	91.3	85.4	91.8
Accumulated benefit obligation	89.6	84.3
Plan assets	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	11.5	10.7	$ 11.6
Accumulated benefit obligation	11.5	10.7
Plan assets	14.0	13.6
Plans with accumulated benefit obligation in excess of plan assets, accumulated benefit obligation	11.5	0.5
Plans with accumulated benefit obligations in excess of plan assets, Plan assets	$ 10.8	$ 0.5