Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010
Revenue:
License	$ 225.0	$ 234.6	$ 644.2	$ 613.9
Maintenance	272.3	259.3	807.4	765.6
Professional services	50.9	46.0	155.7	123.6
Total revenue	548.2	539.9	1,607.3	1,503.1
Operating expenses:
Cost of license revenue	38.6	32.5	116.2	95.2
Cost of maintenance revenue	46.2	43.7	139.5	124.3
Cost of professional services revenue	52.8	54.7	153.4	132.0
Selling and marketing expenses	154.1	160.2	452.3	445.5
Research and development expenses	38.5	45.0	121.5	126.9
General and administrative expenses	50.4	56.0	160.0	163.0
Amortization of intangible assets	5.8	8.4	26.5	25.2
Total operating expenses	386.4	400.5	1,169.4	1,112.1
Operating income	161.8	139.4	437.9	391.0
Other income (loss), net:
Interest and other income, net	2.3	4.5	8.7	8.9
Interest expense	(4.5)	(4.9)	(15.2)	(14.7)
Gain (loss) on investments, net	(1.3)	2.1	(3.4)	2.3
Total other income (loss), net	(3.5)	1.7	(9.9)	(3.5)
Earnings before income taxes	158.3	141.1	428.0	387.5
Provision for income taxes	38.4	32.0	97.7	53.8
Net earnings	119.9	109.1	330.3	333.7
Basic earnings per share	$ 0.72	$ 0.61	$ 1.92	$ 1.87
Diluted earnings per share	$ 0.71	$ 0.60	$ 1.88	$ 1.83
Shares used in computing basic earnings per share	167.2	178.2	172.0	178.7
Shares used in computing diluted earnings per share	169.5	182.3	175.2	182.2
Net earnings	119.9	109.1	330.3	333.7
Other comprehensive income (net of tax):
Foreign currency translation adjustment	17.4	5.9	(15.9)	12.6
Unrealized gain (loss) on available-for-sale securities	0.3	1.3	(0.6)	1.3
Total other comprehensive income (loss)	17.7	7.2	(16.5)	13.9
Total comprehensive income	$ 137.6	$ 116.3	$ 313.8	$ 347.6