CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	3 Months Ended
	Aug. 31, 2014	Aug. 31, 2013
Cash flows from operating activities:
Net income	$ 2,184	$ 2,191
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	160	150
Amortization of intangible assets	547	595
Deferred income taxes	(68)	(101)
Stock-based compensation	215	200
Tax benefits on the exercise of stock options and vesting of restricted stock-based awards	96	67
Excess tax benefits on the exercise of stock options and vesting of restricted stock-based awards	(51)	(40)
Other, net	46	17
Changes in operating assets and liabilities, net of effects from acquisitions:
Decrease in trade receivables, net	2,506	2,707
Decrease in inventories	10	5
Decrease in prepaid expenses and other assets	275	366
Decrease in accounts payable and other liabilities	(1,088)	(994)
Increase (decrease) in income taxes payable	80	(313)
Increase in deferred revenues	1,816	1,442
Net cash provided by operating activities	6,728	6,292
Cash flows from investing activities:
Purchases of marketable securities and other investments	(10,340)	(8,549)
Proceeds from maturities and sales of marketable securities and other investments	3,878	6,515
Acquisitions, net of cash acquired	(37)	(1,314)
Capital expenditures	(201)	(153)
Net cash used for investing activities	(6,700)	(3,501)
Cash flows from financing activities:
Payments for repurchases of common stock	(2,000)	(2,968)
Proceeds from issuances of common stock	588	285
Payments of dividends to stockholders	(537)	(554)
Proceeds from borrowings, net of issuance costs	9,945	5,566
Repayments of borrowings	(1,500)
Excess tax benefits on the exercise of stock options and vesting of restricted stock-based awards	51	40
Distributions to noncontrolling interests	(27)	(28)
Net cash provided by financing activities	6,520	2,341
Effect of exchange rate changes on cash and cash equivalents	(138)	(81)
Net increase in cash and cash equivalents	6,410	5,051
Cash and cash equivalents at beginning of period	17,769	14,613
Cash and cash equivalents at end of period	24,179	19,664
Non-cash investing and financing transactions:
Increase in unsettled repurchases of common stock		30
Decrease in unsettled investment purchases	$ (78)