Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Operating activities
Net income	$ 575	$ 462
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	215	212
Deferred income taxes	(59)	(2)
Provision for bad debts	5	3
Share-based compensation expense	41	44
Asset impairments and other non-cash items	4	3
Foreign currency transaction losses	2	19
Changes in other operating assets and liabilities, net of effect of acquisitions
Decrease in trade accounts receivable	259	306
Decrease in deferred revenue	(580)	(677)
(Decrease) increase in taxes payable, net	(270)	17
Increase in accounts payable, accrued expenses and other	12	11
Decrease in accrued salaries, wages and commissions	(71)	(113)
Changes in other operating assets and liabilities	(35)	(13)
Net cash provided by operating activities	98	272
Investing activities
Acquisitions of businesses, net of cash acquired, and purchased software	(125)	(12)
Purchases of property and equipment	(35)	(32)
Capitalized software development costs	(35)	(78)
Purchases of short-term investments	(9)	(154)
Maturities of short-term investments	184	0
Other investing activities	0	2
Net cash used in investing activities	(20)	(274)
Financing activities
Dividends paid	(228)	(235)
Purchases of common stock	(200)	(344)
Notional pooling borrowings	1,609	513
Notional pooling repayments	(1,639)	(481)
Debt borrowings	498	0
Debt repayments	(8)	(6)
Debt issuance costs	(4)	0
Exercise of common stock options and other	55	22
Net cash provided by (used in) financing activities	83	(531)
Effect of exchange rate changes on cash	36	(60)
Increase (decrease) in cash and cash equivalents	197	(593)
Cash and cash equivalents at beginning of period	2,593	2,679
Cash and cash equivalents at end of period	$ 2,790	$ 2,086