Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Feb. 29, 2020	Feb. 28, 2019
Cash provided (used) by operations:
Net income	$ 3,329	$ 3,040
Adjustments to reconcile net income to net cash provided (used) by operations:
Depreciation	513	527
Deferred income taxes	(372)	67
Stock-based compensation	303	226
Amortization, impairment and other	383	9
Net foreign currency adjustments	(49)	218
Changes in certain working capital components and other assets and liabilities:
(Increase) decrease in accounts receivable	(475)	(460)
(Increase) decrease in inventories	(455)	(226)
(Increase) decrease in prepaid expenses, operating lease right-of-use assets and other current and non-current assets	(494)	(167)
Increase (decrease) in accounts payable, accrued liabilities, operating lease liabilities and other current and non-current liabilities	(197)	659
Cash provided (used) by operations	2,486	3,893
Cash provided (used) by investing activities:
Purchases of short-term investments	(1,775)	(2,384)
Maturities of short-term investments	20	1,613
Sales of short-term investments	1,764	1,491
Additions to property, plant and equipment	(797)	(846)
Other investing activities	30	5
Cash provided (used) by investing activities	(758)	(121)
Cash provided (used) by financing activities:
Increase (decrease) in notes payable	0	(320)
Proceeds from exercise of stock options and other stock issuances	678	487
Repurchase of common stock	(2,865)	(3,405)
Dividends — common and preferred	(1,071)	(986)
Other financing activities	(52)	(43)
Cash provided (used) by financing activities	(3,310)	(4,267)
Effect of exchange rate changes on cash and equivalents	(21)	(59)
Net increase (decrease) in cash and equivalents	(1,603)	(554)
Cash and equivalents, beginning of period	4,466	4,249
CASH AND EQUIVALENTS, END OF PERIOD	2,863	3,695
Supplemental disclosure of cash flow information:
Non-cash additions to property, plant and equipment	115	171
Dividends declared and not paid	$ 384	$ 347