CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Jan. 31, 2012	Jan. 31, 2011	Jan. 31, 2010
Net revenue:
License and other	$ 1,357.6	$ 1,172.1	$ 980.7
Maintenance	858.0	779.7	733.0
Total net revenue	2,215.6	1,951.8	1,713.7
Cost of revenue:
Cost of license and other revenue	187.1	162.2	172.0
Cost of maintenance revenue	42.0	34.4	19.8
Total cost of revenue	229.1	196.6	191.8
Gross profit	1,986.5	1,755.2	1,521.9
Operating expenses:
Marketing and sales	842.6	776.0	731.9
Research and development	566.5	496.2	457.5
General and administrative	223.1	200.8	197.7
Impairment of goodwill	0	0	21.0
Restructuring (benefits) charges	(1.3)	10.8	48.2
Total operating expenses	1,630.9	1,483.8	1,456.3
Income from operations	355.6	271.4	65.6
Interest and other income, net	7.3	0.6	19.1
Income before income taxes	362.9	272.0	84.7
Provision for income taxes	(77.6)	(60.0)	(26.7)
Net income	$ 285.3	$ 212.0	$ 58.0
Basic net income per share	$ 1.25	$ 0.93	$ 0.25
Diluted net income per share	$ 1.22	$ 0.90	$ 0.25
Weighted average shares used in computing basic net income per share	227.7	227.6	228.7
Weighted average shares used in computing diluted net income per share	233.3	234.2	232.1