Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Operating activities from continuing operations:
Net income	$ 476	$ 775	$ 783
Income from discontinued operations	0	0	(14)
Income from continuing operations	476	775	769
Adjustments to reconcile income from continuing operations to net cash provided by operating activities:
Depreciation and amortization	378	320	362
Deferred income taxes	39	(21)	(115)
Provision for bad debts	2	4	0
Share-based compensation expense	120	108	97
Other non-cash items	4	5	0
Foreign currency transaction losses (gains)	3	(4)	4
Changes in other operating assets and liabilities, net of effect of acquisitions:
(Increase) decrease in trade accounts receivable	(10)	(85)	54
Increase (decrease) in deferred revenue	11	24	(105)
Increase (decrease) in taxes payable, net	126	(106)	32
Increase (decrease) in accounts payable, accrued expenses and other	15	(25)	(62)
(Decrease) increase in accrued salaries, wages and commissions	(21)	32	(18)
Changes in other operating assets and liabilities, net	55	51	48
Net cash provided by operating activities - continuing operations	1,198	1,078	1,066
Investing activities from continuing operations:
Acquisitions of businesses, net of cash acquired, and purchased software	(15)	(1,288)	(644)
Purchases of property and equipment	(48)	(47)	(48)
Proceeds from sale of short-term investments	0	0	48
Other investing activities	(2)	(2)	(1)
Net cash used in investing activities - continuing operations	(65)	(1,337)	(645)
Financing activities from continuing operations:
Dividends paid	(428)	(428)	(429)
Purchases of common stock	(163)	(100)	(707)
Notional pooling borrowings	2,310	2,374	3,899
Notional pooling repayments	(2,354)	(2,351)	(3,877)
Debt borrowings	0	850	1,100
Debt repayments	(19)	(6)	(409)
Debt issuance costs	(3)	(5)	(4)
Exercise of common stock options	16	22	4
Payments related to tax withholding for share-based compensation	(36)	(35)	(28)
Other financing activities	(3)	0	(24)
Net cash (used in) provided by financing activities - continuing operations	(680)	321	(475)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	182	(103)	24
Net change in cash, cash equivalents and restricted cash - continuing operations	635	(41)	(30)
Cash used in operating activities - discontinued operations	0	0	(12)
Cash provided by investing activities - discontinued operations	0	0	50
Net effect of discontinued operations on cash, cash equivalents and restricted cash	0	0	38
Increase (decrease) in cash, cash equivalents and restricted cash	635	(41)	8
Cash, cash equivalents and restricted cash at beginning of period	2,772	2,813	2,805
Cash, cash equivalents and restricted cash at end of period	$ 3,407	$ 2,772	$ 2,813