CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Aug. 31, 2015	Aug. 31, 2014
Cash flows from operating activities:
Net income	$ 1,747	$ 2,184
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	219	160
Amortization of intangible assets	452	547
Deferred income taxes	(30)	(68)
Stock-based compensation	253	215
Tax benefits on the exercise of stock options and vesting of restricted stock-based awards	102	96
Excess tax benefits on the exercise of stock options and vesting of restricted stock-based awards	(25)	(51)
Other, net	45	46
Changes in operating assets and liabilities, net of effects from acquisitions:
Decrease in trade receivables, net	2,150	2,506
Decrease in inventories	50	10
Decrease in prepaid expenses and other assets	379	275
Decrease in accounts payable and other liabilities	(1,353)	(1,088)
(Decrease) increase in income taxes payable	(204)	80
Increase in deferred revenues	2,071	1,816
Net cash provided by operating activities	5,856	6,728
Cash flows from investing activities:
Purchases of marketable securities and other investments	(11,669)	(10,340)
Proceeds from maturities and sales of marketable securities and other investments	4,644	3,878
Acquisitions, net of cash acquired		(37)
Capital expenditures	(446)	(201)
Net cash used for investing activities	(7,471)	(6,700)
Cash flows from financing activities:
Payments for repurchases of common stock	(2,846)	(2,000)
Proceeds from issuances of common stock	296	593
Shares repurchased for tax withholdings upon vesting of restricted stock-based awards	(70)	(5)
Payments of dividends to stockholders	(650)	(537)
Proceeds from borrowings, net of issuance costs		9,945
Repayments of borrowings		(1,500)
Excess tax benefits on the exercise of stock options and vesting of restricted stock-based awards	25	51
Distributions to noncontrolling interests	(25)	(27)
Net cash (used for) provided by financing activities	(3,270)	6,520
Effect of exchange rate changes on cash and cash equivalents	(92)	(138)
Net (decrease) increase in cash and cash equivalents	(4,977)	6,410
Cash and cash equivalents at beginning of period	21,716	17,769
Cash and cash equivalents at end of period	16,739	24,179
Non-cash investing and financing transactions:
Increase in unsettled repurchases of common stock	185
Decrease in unsettled investment purchases	$ (342)	$ (78)