Post Retirement Benefit Plans - Benefit Obligations in Excess of Plan Assets (Detail) - USD ($) $ in Millions	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2016
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Plan assets	$ 594.8	$ 568.6	$ 626.3
United States
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Plan assets	311.9	268.6	332.5
Foreign Plan | Germany
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Plan assets	0.0	0.0	0.0
Foreign Plan | United Kingdom
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Plan assets	178.7	188.9	185.1
Foreign Plan | Netherlands
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Plan assets	90.6	97.5	96.1
Foreign Plan | Other International
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Plan assets	13.6	13.6	12.6
Pension Plan
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Projected benefit obligation	662.4	717.8	783.8
Accumulated benefit obligation	638.9	686.8
Plan assets	594.8	568.6
Plans with accumulated benefit obligation in excess of plan assets, accumulated benefit obligation	171.1	522.9
Plans with accumulated benefit obligations in excess of plan assets, Plan assets	94.7	379.7
Pension Plan | United States
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Projected benefit obligation	351.9	387.6	470.2
Accumulated benefit obligation	330.4	362.0
Plan assets	311.9	268.6
Plans with accumulated benefit obligation in excess of plan assets, accumulated benefit obligation	28.8	362.0
Plans with accumulated benefit obligations in excess of plan assets, Plan assets	0.0	268.6
Pension Plan | Foreign Plan | Germany
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Projected benefit obligation	38.1	39.9	41.8
Accumulated benefit obligation	37.2	38.1
Plan assets	0.0	0.0
Plans with accumulated benefit obligation in excess of plan assets, accumulated benefit obligation	37.2	38.1
Plans with accumulated benefit obligations in excess of plan assets, Plan assets	0.0	0.0
Pension Plan | Foreign Plan | United Kingdom
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Projected benefit obligation	176.3	186.9	171.4
Accumulated benefit obligation	176.3	186.9
Plan assets	178.7	188.9
Plans with accumulated benefit obligation in excess of plan assets, accumulated benefit obligation	104.6	111.3
Plans with accumulated benefit obligations in excess of plan assets, Plan assets	94.2	100.3
Pension Plan | Foreign Plan | Netherlands
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Projected benefit obligation	85.4	91.8	90.1
Accumulated benefit obligation	84.3	88.3
Plan assets	90.6	97.5
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 | Foreign Plan | Other International
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Projected benefit obligation	10.7	11.6	$ 10.3
Accumulated benefit obligation	10.7	11.5
Plan assets	13.6	13.6
Plans with accumulated benefit obligation in excess of plan assets, accumulated benefit obligation	0.5	11.5
Plans with accumulated benefit obligations in excess of plan assets, Plan assets	$ 0.5	$ 10.8