CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Revenue:
License	$ 232.3	$ 225.0	$ 613.1	$ 644.2
Maintenance	288.7	272.3	853.0	807.4
Professional services	59.2	50.9	166.7	155.7
Total revenue	580.2	548.2	1,632.8	1,607.3
Operating expenses:
Cost of license revenue	41.1	38.6	120.8	116.2
Cost of maintenance revenue	51.3	46.2	155.1	139.5
Cost of professional services revenue	56.3	52.8	168.5	153.4
Selling and marketing expenses	175.8	154.1	503.7	452.3
Research and development expenses	41.9	38.5	116.5	121.5
General and administrative expenses	56.2	50.4	175.1	160.0
Amortization of intangible assets	10.0	5.8	33.5	26.5
Total operating expenses	432.6	386.4	1,273.2	1,169.4
Operating income	147.6	161.8	359.6	437.9
Other income (loss), net:
Interest and other income, net	1.8	2.3	7.6	8.7
Interest expense	(12.7)	(4.5)	(33.6)	(15.2)
Gain (loss) on investments, net	0.3	(1.3)	0.6	(3.4)
Total other loss, net	(10.6)	(3.5)	(25.4)	(9.9)
Earnings before income taxes	137.0	158.3	334.2	428.0
Provision for income taxes	30.7	38.4	75.9	97.7
Net earnings	106.3	119.9	258.3	330.3
Basic earnings per share	$ 0.71	$ 0.72	$ 1.66	$ 1.92
Diluted earnings per share	$ 0.70	$ 0.71	$ 1.63	$ 1.88
Shares used in computing basic earnings per share	149.7	167.2	155.8	172.0
Shares used in computing diluted earnings per share	152.6	169.5	158.9	175.2
Net earnings	106.3	119.9	258.3	330.3
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment, net of tax provision (benefit) of $(1.9), $(0.8), $0.7 and $(1.2), respectively	16.0	17.4	(8.0)	(15.9)
Unrealized gain (loss) on available-for-sale securities, net of tax provision (benefit) of $0, $0.1, $(0.2) and $(0.2), respectively	0.1	0.3	(0.4)	(0.6)
Loss on cash flow hedge, net of tax	(0.2)		(0.2)
Total other comprehensive income (loss)	15.9	17.7	(8.6)	(16.5)
Total comprehensive income	$ 122.2	$ 137.6	$ 249.7	$ 313.8