Financial Instruments and Fair Value Measurements (Details) (Recurring basis [Member], USD $) In Millions, unless otherwise specified	Jan. 31, 2012
Recurring fair value measurements
Total Fair Value	$ (4.4)
Fair Value, Inputs, Level 1 [Member]
Recurring fair value measurements
Total Fair Value	0
Fair Value, Inputs, Level 2 [Member]
Recurring fair value measurements
Total Fair Value	(4.4)
Fair Value, Inputs, Level 3 [Member]
Recurring fair value measurements
Total Fair Value	0
Interest rate derivatives [Member] | Other Long-Term Liabilities [Member]
Recurring fair value measurements
Total Fair Value	(1.3)
Interest rate derivatives [Member] | Fair Value, Inputs, Level 1 [Member] | Other Long-Term Liabilities [Member]
Recurring fair value measurements
Total Fair Value	0
Interest rate derivatives [Member] | Fair Value, Inputs, Level 2 [Member] | Other Long-Term Liabilities [Member]
Recurring fair value measurements
Total Fair Value	(1.3)
Interest rate derivatives [Member] | Fair Value, Inputs, Level 3 [Member] | Other Long-Term Liabilities [Member]
Recurring fair value measurements
Total Fair Value	0
Foreign exchange hedges [Member] | Other current assets [Member]
Recurring fair value measurements
Foreign exchange hedges included in other current assets	1.5
Foreign exchange hedges [Member] | Other Current Liabilities [Member]
Recurring fair value measurements
Total Fair Value	(3.7)
Foreign exchange hedges [Member] | Fair Value, Inputs, Level 1 [Member] | Other current assets [Member]
Recurring fair value measurements
Foreign exchange hedges included in other current assets	0
Foreign exchange hedges [Member] | Fair Value, Inputs, Level 1 [Member] | Other Current Liabilities [Member]
Recurring fair value measurements
Total Fair Value	0
Foreign exchange hedges [Member] | Fair Value, Inputs, Level 2 [Member] | Other current assets [Member]
Recurring fair value measurements
Foreign exchange hedges included in other current assets	1.5
Foreign exchange hedges [Member] | Fair Value, Inputs, Level 2 [Member] | Other Current Liabilities [Member]
Recurring fair value measurements
Total Fair Value	(3.7)
Foreign exchange hedges [Member] | Fair Value, Inputs, Level 3 [Member] | Other current assets [Member]
Recurring fair value measurements
Foreign exchange hedges included in other current assets	0
Foreign exchange hedges [Member] | Fair Value, Inputs, Level 3 [Member] | Other Current Liabilities [Member]
Recurring fair value measurements
Total Fair Value	0
Energy hedges [Member] | Other Current Liabilities [Member]
Recurring fair value measurements
Total Fair Value	(0.9)
Energy hedges [Member] | Fair Value, Inputs, Level 1 [Member] | Other Current Liabilities [Member]
Recurring fair value measurements
Total Fair Value	0
Energy hedges [Member] | Fair Value, Inputs, Level 2 [Member] | Other Current Liabilities [Member]
Recurring fair value measurements
Total Fair Value	(0.9)	[1]
Energy hedges [Member] | Fair Value, Inputs, Level 3 [Member] | Other Current Liabilities [Member]
Recurring fair value measurements
Total Fair Value	$ 0

[1] The consolidated balance sheet as of October 31, 2010 and the consolidated statements of changes in shareholders' equity as of October 31, 2009 and 2010 have been restated to correct prior period errors. The corrections did not impact total assets, consolidated net income, or cash flows of the Company. Refer to Note 19 for additional discussion.