Restructuring Reserves - Restructuring Activities (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended				3 Months Ended				3 Months Ended		12 Months Ended												3 Months Ended
	Jan. 31, 2014		Jan. 31, 2013		Oct. 31, 2013 Fiscal 2014 Plan	Oct. 31, 2012 Fiscal 2013 Plan	Jan. 31, 2012 Fiscal 2013 Plan		Oct. 31, 2013 One-time Termination Benefits Fiscal 2014 Plan Position	Oct. 31, 2012 One-time Termination Benefits Fiscal 2013 Plan Position	Jan. 31, 2014 Employee Severance Fiscal 2014 Plan		Jan. 31, 2014 Employee Severance Fiscal 2013 Plan		Jan. 31, 2013 Employee Severance Fiscal 2013 Plan		Jan. 31, 2014 Lease Termination Fiscal 2014 Plan		Jan. 31, 2014 Lease Termination Fiscal 2013 Plan		Jan. 31, 2013 Lease Termination Fiscal 2013 Plan		Oct. 31, 2013 Facility Closing Fiscal 2014 Plan Facility	Oct. 31, 2012 Facility Closing Fiscal 2013 Plan Facility
Restructuring Cost and Reserve [Line Items]
Number of facilities consolidated																							4	8
Additions	$ 12.8		$ 44.3		$ 15.0						$ 9.4		$ 0.8		$ 41.0		$ 1.1		$ 1.5		$ 3.3
Number of positions eliminated									85	500
Restructuring and related costs incurred to date						46.2
Restructuring Reserve [Roll Forward]
Beginning Balance	7.3		0				0				0		4.5		0		0		2.8		0
Additions	12.8		44.3		15.0						9.4		0.8		41.0		1.1		1.5		3.3
Payments	(14.9)		(36.6)								(5.7)		(5.0)		(36.1)		0		(4.2)		(0.5)
Adjustments	(0.1)	[1]	(0.4)	[1]							(0.2)	[1]	(0.2)	[1]	(0.4)	[1]	0.2	[1]	0.1	[1]	0	[1]
Ending Balance	5.1		7.3				0				3.5		0.1		4.5		1.3		0.2		2.8
Current portion	4.0	[2]	5.8	[2]			0	[2]
Non-current portion	1.1	[2]	1.5	[2]			0	[2]
Total	$ 5.1		$ 7.3				$ 0				$ 3.5		$ 0.1		$ 4.5		$ 1.3		$ 0.2		$ 2.8

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

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