CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	3 Months Ended
	Aug. 31, 2013	Aug. 31, 2012
Cash Flows From Operating Activities:
Net income	$ 2,191	$ 2,034
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	150	127
Amortization of intangible assets	595	619
Deferred income taxes	(101)	64
Stock-based compensation	200	193
Tax benefits on the exercise of stock options and vesting of restricted stock-based awards	67	120
Excess tax benefits on the exercise of stock options and vesting of restricted stock-based awards	(40)	(62)
Other, net	17	37
Changes in operating assets and liabilities, net of effects from acquisitions:
Decrease in trade receivables, net	2,707	2,630
Decrease in inventories	5	10
Decrease (increase) in prepaid expenses and other assets	366	(72)
Decrease in accounts payable and other liabilities	(994)	(943)
Decrease in income taxes payable	(313)	(329)
Increase in deferred revenues	1,442	1,243
Net cash provided by operating activities	6,292	5,671
Cash Flows From Investing Activities:
Purchases of marketable securities and other investments	(8,549)	(6,804)
Proceeds from maturities and sales of marketable securities and other investments	6,515	6,794
Acquisitions, net of cash acquired	(1,314)	(361)
Capital expenditures	(153)	(139)
Net cash used for investing activities	(3,501)	(510)
Cash Flows From Financing Activities:
Payments for repurchases of common stock	(2,968)	(3,076)
Proceeds from issuances of common stock	285	517
Payments of dividends to stockholders	(554)	(292)
Proceeds from borrowings, net of issuance costs	5,566
Repayments of borrowings		(1,700)
Excess tax benefits on the exercise of stock options and vesting of restricted stock-based awards	40	62
Distributions to noncontrolling interests	(28)	(31)
Net cash provided by (used for) financing activities	2,341	(4,520)
Effect of exchange rate changes on cash and cash equivalents	(81)	71
Net increase in cash and cash equivalents	5,051	712
Cash and cash equivalents at beginning of period	14,613	14,955
Cash and cash equivalents at end of period	19,664	15,667
Non-cash financing transactions:
Increase (decrease) in unsettled repurchases of common stock	$ 30	$ (1)