Restructuring (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Apr. 30, 2013		Apr. 30, 2012
Restructuring Cost and Reserve [Line Items]
Current Fiscal Year End Date	--01-31
Restructuring Reserve [Roll Forward]
Additions	$ 0.4		$ 0
Fiscal 2013 Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated (in number)	500
Restructuring and Related Cost, Cost Incurred to Date	0.4
Restructuring Reserve [Roll Forward]
Beginning Balance	7.3
Additions	0.4
Payments	(5.2)
Adjustments	0	[1]
Ending Balance	2.5
Current portion At January 31, 2012	5.8	[2]
Current portion At October 31, 2012	1.2	[2]
Non-current portion At January 31, 2012	1.5	[2]
Non-current portion At October 31, 2012	1.3	[2]
Fiscal 2013 Plan [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	0.3
Restructuring Reserve [Roll Forward]
Beginning Balance	4.5
Additions	0.4
Payments	(4.6)
Adjustments	(0.1)	[1]
Ending Balance	0.2
Fiscal 2013 Plan [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	0.1
Restructuring Reserve [Roll Forward]
Beginning Balance	2.8
Additions	0
Payments	(0.6)
Adjustments	0.1	[1]
Ending Balance	2.3
Fiscal 2013 Plan [Member] | Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	$ 52.0

[1] Adjustments include the impact of foreign currency translation.

[2] The current and non-current portions of the reserve are recorded in the Condensed Consolidated Balance Sheets under “Other accrued liabilities” and “Other liabilities,” respectively.