Post Retirement Benefit Plans - Fair Value of the Pension Plans Investments (Detail) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2017	Oct. 31, 2016
Change in plan assets:
Fair value of plan assets at beginning of year	$ 626.3	$ 624.7
Actual return on plan assets	38.2	71.6
Expenses paid	(3.4)	(4.0)
Plan participant contributions	0.2	0.2
Foreign currency impact	20.9	(47.1)
Employer contributions	11.0	17.3
Benefits paid out of plan	(22.9)	(36.4)
Settlements	(101.7)
Fair value of plan assets at end of year	568.6	626.3
United States
Change in plan assets:
Fair value of plan assets at beginning of year	332.5	311.1
Actual return on plan assets	37.0	29.8
Expenses paid	(2.6)	(3.3)
Plan participant contributions	0.0	0.0
Foreign currency impact	0.0	0.0
Employer contributions	9.0	14.9
Benefits paid out of plan	(12.9)	(20.0)
Settlements	(94.4)
Fair value of plan assets at end of year	268.6	332.5
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	185.1	208.4
Actual return on plan assets	0.8	31.5
Expenses paid	(0.8)	(0.7)
Plan participant contributions	0.0	0.0
Foreign currency impact	14.4	(45.6)
Employer contributions	1.5	1.8
Benefits paid out of plan	(4.8)	(10.3)
Settlements	(7.3)
Fair value of plan assets at end of year	188.9	185.1
Foreign Plan | Netherlands
Change in plan assets:
Fair value of plan assets at beginning of year	96.1	92.7
Actual return on plan assets	(0.4)	9.3
Expenses paid	0.1	0.2
Plan participant contributions	0.2	0.2
Foreign currency impact	6.1	(1.4)
Employer contributions	0.0	0.0
Benefits paid out of plan	(4.6)	(4.9)
Settlements	0.0
Fair value of plan assets at end of year	97.5	96.1
Foreign Plan | Other International
Change in plan assets:
Fair value of plan assets at beginning of year	12.6	12.5
Actual return on plan assets	0.8	1.0
Expenses paid	(0.1)	(0.2)
Plan participant contributions	0.0	0.0
Foreign currency impact	0.4	(0.1)
Employer contributions	0.5	0.6
Benefits paid out of plan	(0.6)	(1.2)
Settlements	0.0
Fair value of plan assets at end of year	$ 13.6	$ 12.6