CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Apr. 30, 2012	Apr. 30, 2011
Net revenue:
License and other	$ 361.0	$ 323.0
Maintenance	227.6	205.3
Total net revenue	588.6	528.3
Cost of revenue:
Cost of license and other revenue	47.1	42.6
Cost of maintenance revenue	11.7	12.0
Total cost of revenue	58.8	54.6
Gross profit	529.8	473.7
Operating expenses:
Marketing and sales	223.2	201.9
Research and development	152.7	136.6
General and administrative	59.9	56.6
Total operating expenses	435.8	395.1
Income from operations	94.0	78.6
Interest and other income, net	3.5	5.9
Income before income taxes	97.5	84.5
Provision for income taxes	(18.6)	(15.2)
Net income	$ 78.9	$ 69.3
Basic net income per share (in usd per share)	$ 0.35	$ 0.30
Diluted net income per share (in usd per share)	$ 0.34	$ 0.29
Weighted average shares used in computing basic net income per share (in usd per share)	228.1	228.2
Weighted average shares used in computing diluted net income per share (in usd per share)	234.1	237.1