Post Retirement Benefit Plans - Reconciliation of Beginning and Ending Balances of Fair Value Measurements Using Significant Unobservable Inputs (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Oct. 31, 2014	Oct. 31, 2013
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Balance at beginning of year	$ 621.2	$ 599.1
Actual return on plan assets held at reporting date:
Plan participant contributions	0.3	0.3
Currency impact	(10.0)	6.4
Balance at end of year	650.8	621.2
Level 3 [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Balance at beginning of year	96.6	87.1
Actual return on plan assets held at reporting date:
Assets still held at reporting date	15.9	6.5
Plan participant contributions	0.3	0.3
Net purchases (settlements)	47.0	(6.1)
Transfers		2.3
Currency impact	(8.7)	6.5
Balance at end of year	$ 151.1	$ 96.6