CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	May 31, 2017	May 31, 2016	May 31, 2015
Cash flows from operating activities:
Net income	$ 9,335	$ 8,901	$ 9,938
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	1,000	871	712
Amortization of intangible assets	1,451	1,638	2,149
Allowances for doubtful accounts receivable	129	130	56
Deferred income taxes	(486)	(105)	(548)
Stock-based compensation	1,350	1,037	933
Other, net	123	143	327
Changes in operating assets and liabilities, net of effects from acquisitions:
Decrease in trade receivables, net	18	96	208
(Increase) decrease in inventories	(88)	88	(96)
Decrease (increase) in prepaid expenses and other assets	64	(90)	(387)
(Decrease) increase in accounts payable and other liabilities	(37)	(13)	247
Increase in deferred revenues	535	676	655
Increase in income taxes payable	732	313	386
Net cash provided by operating activities	14,126	13,685	14,580
Cash flows from investing activities:
Purchases of marketable securities and other investments	(25,867)	(24,562)	(31,421)
Proceeds from maturities and sales of marketable securities and other investments	17,615	21,247	20,004
Acquisitions, net of cash acquired	(11,221)	(650)	(6,239)
Capital expenditures	(2,021)	(1,189)	(1,391)
Net cash used for investing activities	(21,494)	(5,154)	(19,047)
Cash flows from financing activities:
Payments for repurchases of common stock	(3,561)	(10,440)	(8,087)
Proceeds from issuances of common stock	2,181	1,425	1,816
Shares repurchased for tax withholdings upon vesting of restricted stock-based awards	(283)	(89)	(14)
Payments of dividends to stockholders	(2,631)	(2,541)	(2,255)
Proceeds from borrowings, net of issuance costs	17,732	3,750	19,842
Repayments of borrowings	(4,094)	(2,000)	(1,500)
Distributions to noncontrolling interests	(258)	(85)	(196)
Net cash provided by (used for) financing activities	9,086	(9,980)	9,606
Effect of exchange rate changes on cash and cash equivalents	(86)	(115)	(1,192)
Net increase (decrease) in cash and cash equivalents	1,632	(1,564)	3,947
Cash and cash equivalents at beginning of period	20,152	21,716	17,769
Cash and cash equivalents at end of period	21,784	20,152	21,716
Non-cash investing and financing transactions:
Fair values of restricted stock-based awards and stock options assumed in connection with acquisitions	90	1	12
(Decrease) increase in unsettled repurchases of common stock	(69)	(1)	1
Increase (decrease) in unsettled investment purchases	73	(112)	264
Supplemental schedule of cash flow data:
Cash paid for income taxes	1,983	2,331	3,055
Cash paid for interest	$ 1,612	$ 1,616	$ 1,022