Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Operating activities from continuing operations:
Net income	$ 846	$ 914	$ 955
Income from discontinued operations	(36)	(27)	(34)
Income from continuing operations	810	887	921
Adjustments to reconcile income from continuing operations to net cash provided by operating activities:
Depreciation and amortization	402	415	463
Deferred income taxes	(72)	(69)	13
Provision for bad debts	3	7	7
Share-based compensation expense	87	81	77
Asset impairments and other non-cash items	5	10	12
Foreign currency transaction (gains) losses	(2)	10	16
Changes in other operating assets and liabilities, net of effect of acquisitions:
Decrease in trade accounts receivable	79	42	35
Decrease in deferred revenue	(138)	(103)	(128)
Decrease in taxes payable, net	(98)	(331)	(56)
(Decrease) increase in accounts payable, accrued expenses and other	(9)	82	6
Decrease in accrued salaries, wages and commissions	(40)	(28)	(42)
Changes in other operating assets and liabilities	3	(30)	35
Net cash provided by operating activities - continuing operations	1,030	973	1,359
Investing activities from continuing operations:
Acquisitions of businesses, net of cash acquired, and purchased software	(38)	(133)	(76)
Purchases of property and equipment	(53)	(65)	(50)
Proceeds from sale of assets	0	12	0
Capitalized software development costs	0	(40)	(156)
Purchases of investments	0	(9)	(346)
Maturities of investments	0	191	163
Decrease in restricted cash	0	50	0
Other investing activities	0	(1)	1
Net cash (used in) provided by investing activities - continuing operations	(91)	5	(464)
Financing activities from continuing operations:
Dividends paid	(444)	(453)	(463)
Purchases of common stock	(215)	(507)	(493)
Notional pooling borrowings	5,371	3,702	1,143
Notional pooling repayments	(5,207)	(3,734)	(1,139)
Debt borrowings	0	498	0
Debt repayments	(508)	(15)	(13)
Debt issuance costs	0	(5)	0
Exercise of common stock options and other	26	93	27
Net cash used in financing activities - continuing operations	(977)	(421)	(938)
Effect of exchange rate changes on cash	(532)	62	(83)
Net change in cash and cash equivalents - continuing operations	(570)	619	(126)
Cash (used in) provided by operating activities - discontinued operations	(48)	40	49
Cash provided by (used in) investing activities - discontinued operations	170	0	(9)
Net effect of discontinued operations on cash and cash equivalents	122	40	40
(Decrease) increase in cash and cash equivalents	(448)	659	(86)
Cash and cash equivalents at beginning of period	3,252	2,593	2,679
Cash and cash equivalents at end of period	$ 2,804	$ 3,252	$ 2,593