Post Retirement Benefit Plans - Change in Projected Benefit Obligation (Detail) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2016
Change in benefit obligation:
Settlements		$ (94.4)
Pension Plan
Change in benefit obligation:
Benefit obligation at beginning of year	$ 717.8	783.8
Service cost	12.3	13.3	$ 12.4
Interest cost	18.9	18.2	22.0
Plan participant contributions	0.2	0.2
Expenses paid from assets	(1.7)	(3.4)
Plan Amendments	3.3	(0.2)
Actuarial gain	(39.1)	13.2
Foreign currency effect	(7.1)	22.4
Benefits paid	(42.2)	(26.2)
Settlements		(101.7)
Business divestiture		(1.8)
Benefit obligation at end of year	662.4	717.8	783.8
Pension Plan | United States
Change in benefit obligation:
Benefit obligation at beginning of year	387.6	470.2
Service cost	10.8	11.8	10.2
Interest cost	13.2	12.9	13.7
Plan participant contributions	0.0	0.0
Expenses paid from assets	(1.0)	(2.6)
Plan Amendments	0.0	0.0
Actuarial gain	(33.5)	4.7
Foreign currency effect	0.0	0.0
Benefits paid	(25.2)	(15.0)
Settlements		(94.4)
Business divestiture		0.0
Benefit obligation at end of year	351.9	387.6	470.2
Pension Plan | Foreign Plan | Germany
Change in benefit obligation:
Benefit obligation at beginning of year	39.9	41.8
Service cost	0.4	0.5	0.5
Interest cost	0.5	0.5	0.8
Plan participant contributions	0.0	0.0
Expenses paid from assets	0.0	0.0
Plan Amendments	0.0	0.0
Actuarial gain	(0.5)	(2.4)
Foreign currency effect	(0.8)	2.5
Benefits paid	(1.4)	(1.2)
Settlements		0.0
Business divestiture		(1.8)
Benefit obligation at end of year	38.1	39.9	41.8
Pension Plan | Foreign Plan | United Kingdom
Change in benefit obligation:
Benefit obligation at beginning of year	186.9	171.4
Service cost	0.5	0.5	0.8
Interest cost	4.0	3.8	5.7
Plan participant contributions	0.0	0.0
Expenses paid from assets	(0.6)	(0.8)
Plan Amendments	3.5	0.0
Actuarial gain	(3.9)	10.5
Foreign currency effect	(4.3)	13.7
Benefits paid	(9.8)	(4.9)
Settlements		(7.3)
Business divestiture		0.0
Benefit obligation at end of year	176.3	186.9	171.4
Pension Plan | Foreign Plan | Netherlands
Change in benefit obligation:
Benefit obligation at beginning of year	91.8	90.1
Service cost	0.5	0.4	0.7
Interest cost	0.9	0.7	1.4
Plan participant contributions	0.2	0.2
Expenses paid from assets	0.0	0.1
Plan Amendments	(0.2)	(0.2)
Actuarial gain	(0.9)	(0.6)
Foreign currency effect	(1.7)	5.7
Benefits paid	(5.2)	(4.6)
Settlements		0.0
Business divestiture		0.0
Benefit obligation at end of year	85.4	91.8	90.1
Pension Plan | Foreign Plan | Other International
Change in benefit obligation:
Benefit obligation at beginning of year	11.6	10.3
Service cost	0.1	0.1	0.2
Interest cost	0.3	0.3	0.4
Plan participant contributions	0.0	0.0
Expenses paid from assets	(0.1)	(0.1)
Plan Amendments	0.0	0.0
Actuarial gain	(0.3)	1.0
Foreign currency effect	(0.3)	0.5
Benefits paid	(0.6)	(0.5)
Settlements		0.0
Business divestiture		0.0
Benefit obligation at end of year	$ 10.7	$ 11.6	$ 10.3