Retirement Plans and Postretirement Health Care and Life Insurance Benefits - Components of Net Periodic Pension Cost (Detail) (Pension Plans, Defined Benefit [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
	Jan. 31, 2014	Jan. 31, 2013
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 3.9	$ 4.2
Interest cost	7.4	6.9
Expected return on plan assets	(8.5)	(8.1)
Amortization of prior service cost, initial net asset and net actuarial gain	2.7	4.2
Net periodic pension costs	$ 5.5	$ 7.2