CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Apr. 30, 2014	Apr. 30, 2013
Net revenue:
License and other	$ 316.2	$ 323.5
Subscription	276.3	246.9
Total net revenue	592.5	570.4
Cost of revenue:
Cost of license and other revenue	49.3	44.4
Cost of subscription revenue	29.4	23.1
Total cost of revenue	78.7	67.5
Gross profit	513.8	502.9
Operating expenses:
Marketing and sales	225.4	208.8
Research and development	170.5	150.8
General and administrative	73.4	61.5
Restructuring charges, net	2.3	0.4
Total operating expenses	471.6	421.5
Income from operations	42.2	81.4
Interest and other (expense) income, net	(6.6)	(8.8)
Income before income taxes	35.6	72.6
Provision for income taxes	(7.3)	(17.0)
Net income	$ 28.3	$ 55.6
Basic net income per share (in usd per share)	$ 0.12	$ 0.25
Diluted net income per share (in usd per share)	$ 0.12	$ 0.24
Weighted average shares used in computing basic net income per share (in shares)	227.0	223.8
Weighted average shares used in computing diluted net income per share (in shares)	231.6	229.3