Long-Term Debt - Summary of Long-Term Debt (Detail) (USD $) In Millions, unless otherwise specified	Jul. 31, 2013	Oct. 31, 2012
Debt Instrument [Line Items]
Carrying amount of long-term debt	$ 1,250.8	$ 1,200.3
Less current portion	(10.0)	(25.0)
Long-term debt	1,240.8	1,175.3
Amended Credit Agreement [Member]
Debt Instrument [Line Items]
Carrying amount of long-term debt	277.6
Less current portion	(10.0)
Long-term debt	267.6
2010 Credit Agreement [Member]
Debt Instrument [Line Items]
Carrying amount of long-term debt		255.0
Senior Notes Due 2017 [Member]
Debt Instrument [Line Items]
Carrying amount of long-term debt	301.9	302.3
Senior Notes Due 2019 [Member]
Debt Instrument [Line Items]
Carrying amount of long-term debt	244.2	243.6
Senior Notes Due 2021 [Member]
Debt Instrument [Line Items]
Carrying amount of long-term debt	262.9	256.0
Trade Accounts Receivable Credit Facility [Member]
Debt Instrument [Line Items]
Carrying amount of long-term debt	130.0	110.0
Other Long-Term Debt [Member]
Debt Instrument [Line Items]
Carrying amount of long-term debt	$ 34.2	$ 33.4