Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2010
Cash flows from operating activities:
Net earnings	$ 401.0	$ 456.2	$ 406.1
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	224.6	190.0	175.8
Deferred income tax provision	1.7	40.9	28.2
Share-based compensation expense	127.2	106.5	88.9
Loss (gain) on investments, net and other	2.9	(2.8)	(3.5)
Changes in operating assets and liabilities, net of acquisitions:
Trade accounts receivable	(2.5)	(70.5)	7.9
Trade finance receivables	33.7	22.9	(47.8)
Prepaid and other current assets	(13.5)	(19.9)	(1.2)
Other long-term assets	3.9	(6.5)	(3.8)
Accrued and other current liabilities	24.8	(30.2)	(7.0)
Deferred revenue	20.3	132.0	30.5
Other long-term liabilities	(6.6)	(33.6)	9.0
Other operating assets and liabilities	(17.2)	(19.8)	(47.7)
Net cash provided by operating activities	800.3	765.2	635.4
Cash flows from investing activities:
Proceeds from maturities of investments	30.8	50.0	360.8
Proceeds from sales of investments	15.1	47.8	9.2
Purchases of investments	(88.5)	(57.6)	(333.8)
Cash paid for acquisitions, net of cash acquired, and other investments	(464.3)	(51.0)	(92.3)
Capitalization of software development costs	(132.5)	(115.8)	(81.0)
Purchases of property and equipment	(26.5)	(22.0)	(22.1)
Other investing activities		1.0	(0.1)
Net cash used in investing activities	(665.9)	(147.6)	(159.3)
Cash flows from financing activities:
Treasury stock acquired	(780.5)	(439.0)	(275.1)
Repurchases of stock to satisfy employee tax withholding obligations	(38.2)	(25.1)	(13.0)
Proceeds from stock options exercised and other	52.8	130.2	89.2
Excess tax benefit from share-based compensation expense	15.1	18.6	13.7
Repayments of borrowings and capital lease obligations	(24.5)	(23.7)	(15.5)
Proceeds from borrowings, net of issuance costs	493.3	(1.9)	42.0
Net cash used in financing activities	(282.0)	(340.9)	(158.7)
Effect of exchange rate changes on cash and cash equivalents	(16.4)	15.6	27.9
Net change in cash and cash equivalents	(164.0)	292.3	345.3
Cash and cash equivalents, beginning of period	1,660.9	1,368.6	1,023.3
Cash and cash equivalents, end of period	1,496.9	1,660.9	1,368.6
Supplemental disclosure of cash flow information:
Cash paid for interest	22.9	23.0	23.0
Cash paid for income taxes, net of amounts refunded	$ 40.7	$ 107.4	$ 89.8