Long-Term Debt (Details) (USD $) In Millions, unless otherwise specified	Apr. 30, 2012	Oct. 31, 2011
Summary of Long-term debt
Carrying amount of long-term debt	$ 1,304.8	$ 1,357.6
Less current portion	(18.8)	(12.5)
Long-term debt	1,286.0	1,345.1
Credit Agreement [Member]
Summary of Long-term debt
Carrying amount of long-term debt	342.4	355.4
Less current portion	(18.8)
Long-term debt	323.6
Senior Notes due 2017 [Member]
Summary of Long-term debt
Carrying amount of long-term debt	302.6	302.9
Senior Notes due 2019 [Member]
Summary of Long-term debt
Carrying amount of long-term debt	243.3	242.9
Senior Notes due 2021 [Member]
Summary of Long-term debt
Carrying amount of long-term debt	264.8	280.2
Trade accounts receivable credit facility [Member]
Summary of Long-term debt
Carrying amount of long-term debt	128.0	130.0
Other long-term debt [Member]
Summary of Long-term debt
Carrying amount of long-term debt	$ 23.7	$ 46.2