Condensed Consolidated Statements Of Cash Flows (USD $) In Millions, unless otherwise specified	6 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Operating Activities
Net income	$ 828	$ 781
Adjustments to reconcile to net cash provided by operating activities:
Depreciation and amortization	316	252
Other deferred taxes	152	398
Share-based compensation expense	73	82
Gain on business combination	0	(81)
Other non-cash items	62	21
Changes in operating assets and liabilities, net of acquisitions:
Receivables	(390)	211
Inventories	(235)	19
Drafts and accounts payable	347	(624)
Deferred revenue	(211)	178
Taxes	6	(118)
Litigation charges	50	60
Litigation settlement payments	(20)	(438)
Other	(165)	(282)
Net cash provided by operating activities	813	459
Investing Activities
Property acquisitions	(131)	(83)
Capitalized software expenditures	(66)	(75)
Acquisitions, less cash and cash equivalents acquired	(116)	(251)
Other	39	58
Net cash used in investing activities	(274)	(351)
Financing Activities
Proceeds from short-term borrowings	150	1,125
Repayments of short-term borrowings	(150)	(1,525)
Common stock transactions:
Issuances	119	80
Share repurchases, including shares surrendered for tax withholding	(128)	(53)
Dividends paid	(99)	(100)
Other	71	40
Net cash used in financing activities	(37)	(433)
Effect of exchange rate changes on cash and cash equivalents	2	7
Net increase (decrease) in cash and cash equivalents	504	(318)
Cash and cash equivalents at beginning of period	2,456	3,149
Cash and cash equivalents at end of period	$ 2,960	$ 2,831