Restructuring (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended				9 Months Ended
	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2013 Fiscal 2014 Plan Position Facility	Oct. 31, 2014 Fiscal 2014 Plan		Jan. 31, 2014 Fiscal 2014 Plan		Oct. 31, 2014 Fiscal 2014 Plan Employee termination costs		Oct. 31, 2014 Fiscal 2014 Plan Lease termination and asset costs		Oct. 31, 2013 Fiscal 2014 Plan Minimum
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated (position)					85
Number of facilities consolidated (facilities)					4
Expected cost														$ 15.0
Restructuring Reserve [Roll Forward]
Beginning Balance						4.8				3.5		1.3
Additions	0	4.4	3.1	6.5		2.9				2.6		0.3
Payments						(6.4)				(6.0)		(0.4)
Adjustments						0.2	[1]			(0.1)	[1]	0.3	[1]
Ending Balance						1.5				0		1.5
Current portion						0.7	[2]	3.8	[2]
Non-current portion						$ 0.8	[2]	$ 1.0	[2]

[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.