Post Retirement Benefit Plans - Fair Value of the Pension Plans Investments (Detail) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2018	Oct. 31, 2017
Change in plan assets:
Fair value of plan assets at beginning of year	$ 568.6	$ 626.3
Actual return on plan assets	(8.7)	38.2
Expenses paid	(1.7)	(3.4)
Plan participant contributions	0.2	0.2
Foreign currency impact	(6.9)	20.9
Employer contributions	81.7	11.0
Benefits paid out of plan	(38.4)	(22.9)
Settlements		(101.7)
Fair value of plan assets at end of year	594.8	568.6
United States
Change in plan assets:
Fair value of plan assets at beginning of year	268.6	332.5
Actual return on plan assets	(12.9)	37.0
Expenses paid	(1.0)	(2.6)
Plan participant contributions	0.0	0.0
Foreign currency impact	0.0	0.0
Employer contributions	80.0	9.0
Benefits paid out of plan	(22.8)	(12.9)
Settlements		(94.4)
Fair value of plan assets at end of year	311.9	268.6
Foreign Plan | Germany
Change in plan assets:
Fair value of plan assets at beginning of year	0.0	0.0
Actual return on plan assets	0.0	0.0
Expenses paid	0.0	0.0
Plan participant contributions	0.0	0.0
Foreign currency impact	0.0	0.0
Employer contributions	0.0	0.0
Benefits paid out of plan	0.0	0.0
Settlements		0.0
Fair value of plan assets at end of year	0.0	0.0
Foreign Plan | United Kingdom
Change in plan assets:
Fair value of plan assets at beginning of year	188.9	185.1
Actual return on plan assets	3.2	0.8
Expenses paid	(0.6)	(0.8)
Plan participant contributions	0.0	0.0
Foreign currency impact	(4.6)	14.4
Employer contributions	1.6	1.5
Benefits paid out of plan	(9.8)	(4.8)
Settlements		(7.3)
Fair value of plan assets at end of year	178.7	188.9
Foreign Plan | Netherlands
Change in plan assets:
Fair value of plan assets at beginning of year	97.5	96.1
Actual return on plan assets	(0.1)	(0.4)
Expenses paid	0.0	0.1
Plan participant contributions	0.2	0.2
Foreign currency impact	(1.8)	6.1
Employer contributions	0.0	0.0
Benefits paid out of plan	(5.2)	(4.6)
Settlements		0.0
Fair value of plan assets at end of year	90.6	97.5
Foreign Plan | Other International
Change in plan assets:
Fair value of plan assets at beginning of year	13.6	12.6
Actual return on plan assets	1.1	0.8
Expenses paid	(0.1)	(0.1)
Plan participant contributions	0.0	0.0
Foreign currency impact	(0.5)	0.4
Employer contributions	0.1	0.5
Benefits paid out of plan	(0.6)	(0.6)
Settlements		0.0
Fair value of plan assets at end of year	$ 13.6	$ 13.6