Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	May. 31, 2015	May. 31, 2014	May. 31, 2013
Cash provided by operations:
Net income	$ 3,273	$ 2,693	$ 2,472
Income charges (credits) not affecting cash:
Depreciation	606	518	438
Deferred income taxes	(113)	(11)	20
Stock-based compensation (Note 11)	191	177	174
Amortization and other	43	68	64
Net foreign currency adjustments	424	56	66
Net gain on divestitures	0	0	(124)
Changes in certain working capital components and other assets and liabilities:
(Increase) decrease in accounts receivable	(216)	(298)	142
(Increase) in inventories	(621)	(505)	(219)
(Increase) in prepaid expenses and other current assets	(144)	(210)	(28)
Increase in accounts payable, accrued liabilities and income taxes payable	1,237	525	27
Cash provided by operations	4,680	3,013	3,032
Cash used by investing activities:
Purchases of short-term investments	(4,936)	(5,386)	(4,133)
Maturities of short-term investments	3,655	3,932	1,663
Sales of short-term investments	2,216	1,126	1,330
Investments in reverse repurchase agreements	(150)	0	0
Additions to property, plant and equipment	(963)	(880)	(598)
Disposals of property, plant and equipment	3	3	14
Proceeds from divestitures	0	0	786
(Increase) in other assets, net of other liabilities	0	(2)	(2)
Cash used by investing activities	(175)	(1,207)	(940)
Cash used by financing activities:
Net proceeds from long-term debt issuance	0	0	986
Long-term debt payments, including current portion	(7)	(60)	(49)
(Decrease) increase in notes payable	(63)	75	10
Payments on capital lease obligations	(19)	(17)	0
Proceeds from exercise of stock options and other stock issuances	514	383	313
Excess tax benefits from share-based payment arrangements	218	132	72
Repurchase of common stock	(2,534)	(2,628)	(1,674)
Dividends — common and preferred	(899)	(799)	(703)
Cash used by financing activities	(2,790)	(2,914)	(1,045)
Effect of exchange rate changes on cash and equivalents	(83)	(9)	36
Net increase (decrease) in cash and equivalents	1,632	(1,117)	1,083
Cash and equivalents, beginning of year	2,220	3,337	2,254
CASH AND EQUIVALENTS, END OF YEAR	3,852	2,220	3,337
Cash paid during the year for:
Interest, net of capitalized interest	53	53	20
Income taxes	1,262	856	702
Non-cash additions to property, plant and equipment	206	167	137
Dividends declared and not paid	$ 240	$ 209	$ 188