Unaudited Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	6 Months Ended
	Nov. 30, 2013	Nov. 30, 2012
Cash provided by operations:
Net income	$ 1,317	$ 951
Income charges (credits) not affecting cash:
Depreciation	246	211
Deferred income taxes	23	(49)
Stock-based compensation (Note 7)	88	83
Amortization and other	54	55
Net loss on divestitures	0	107
Changes in certain working capital components and other assets and liabilities:
(Increase) decrease in accounts receivable	(89)	22
(Increase) in inventories	(280)	(41)
(Increase) in prepaid expenses and other current assets	(125)	(33)
(Decrease) in accounts payable, accrued liabilities and income taxes	(305)	(61)
Cash provided by operations	929	1,245
Cash (used) provided by investing activities:
Purchases of short-term investments	(2,759)	(1,379)
Maturities of short-term investments	1,602	672
Sales of short-term investments	517	904
Investments in reverse repurchase agreements	(100)	0
Additions to property, plant and equipment	(428)	(250)
Disposals of property, plant and equipment	1	0
Proceeds from divestitures	0	225
Increase in other assets, net of other liabilities	(10)	(12)
Cash (used) provided by investing activities	(1,177)	160
Cash used by financing activities:
Long-term debt payments, including current portion	(57)	(45)
Increase (decrease) in notes payable	66	(10)
Proceeds from exercise of stock options and other stock issuances	233	116
Excess tax benefits from share-based payment arrangements	71	14
Repurchase of common stock	(928)	(1,179)
Dividends — common and preferred	(375)	(327)
Cash used by financing activities	(990)	(1,431)
Effect of exchange rate changes	(13)	0
Net decrease in cash and equivalents	(1,251)	(26)
Cash and equivalents, beginning of period	3,337	2,317
CASH AND EQUIVALENTS, END OF PERIOD	2,086	2,291
Cash paid during the year for:
Dividends declared and not paid	$ 213	$ 188