Basis of Presentation Reclassification (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
	Oct. 31, 2012	Oct. 31, 2012
Reclassification [Abstract]
Decrease to Cost of License and Other Revenue (for Reclass)	$ (8.2)	$ (21.1)
Increase to Subscription Revenue (for Reclass)	6.9	19.2
Decrease to License and Other Revenue (for Reclass)	(6.9)	(19.2)
Increase to Cost of Subscription Revenue (for Reclass)	$ 8.2	$ 21.1