Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) (USD $) In Millions, except Per Share data	3 Months Ended		6 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Revenue:
License	$ 229.7	$ 208.1	$ 419.2	$ 379.3
Maintenance	270.5	252.5	535.1	506.3
Professional services	56.5	41.7	104.8	77.6
Total revenue	556.7	502.3	1,059.1	963.2
Operating expenses:
Cost of license revenue	39.3	30.8	77.6	62.7
Cost of maintenance revenue	49.5	39.9	93.3	80.6
Cost of professional services revenue	53.2	40.3	100.6	77.3
Selling and marketing expenses	153.5	143.2	298.2	285.3
Research and development expenses	38.3	43.4	83.0	81.9
General and administrative expenses	51.0	52.8	109.6	107.0
Amortization of intangible assets	10.9	8.4	20.7	16.8
Total operating expenses	395.7	358.8	783.0	711.6
Operating income	161.0	143.5	276.1	251.6
Other income (loss), net:
Interest and other income, net	2.6	3.8	6.4	4.4
Interest expense	(5.2)	(4.7)	(10.7)	(9.8)
Gain (loss) on investments, net	(2.2)	1.2	(2.1)	0.2
Total other income (loss), net	(4.8)	0.3	(6.4)	(5.2)
Earnings before income taxes	156.2	143.8	269.7	246.4
Provision for income taxes	41.5	12.0	59.3	21.8
Net earnings	114.7	131.8	210.4	224.6
Basic earnings per share	$ 0.66	$ 0.74	$ 1.20	$ 1.26
Diluted earnings per share	$ 0.65	$ 0.73	$ 1.18	$ 1.24
Shares used in computing basic earnings per share	173.0	178.3	174.7	177.9
Shares used in computing diluted earnings per share	176.0	181.4	178.3	181.2
Comprehensive income:
Net earnings	114.7	131.8	210.4	224.6
Other comprehensive income (net of tax):
Foreign currency translation adjustment	(41.5)	25.5	(33.3)	6.8
Unrealized loss on available-for-sale securities	(0.7)	(0.7)	(0.8)	(0.1)
Total other comprehensive income (loss)	(42.2)	24.8	(34.1)	6.7
Total comprehensive income	$ 72.5	$ 156.6	$ 176.3	$ 231.3