Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Nov. 30, 2020	Nov. 30, 2019
Cash provided (used) by operations:
Net income	$ 2,769	$ 2,482
Adjustments to reconcile net income to net cash provided (used) by operations:
Depreciation	361	343
Deferred income taxes	(177)	(134)
Stock-based compensation	325	190
Amortization, impairment and other	103	19
Net foreign currency adjustments	(98)	6
Changes in certain working capital components and other assets and liabilities:
(Increase) decrease in accounts receivable	(921)	(568)
(Increase) decrease in inventories	1,321	(608)
(Increase) decrease in prepaid expenses, operating lease right-of-use assets and other current and non-current assets	(163)	(67)
Increase (decrease) in accounts payable, accrued liabilities, operating lease liabilities and other current and non-current liabilities	(165)	(357)
Cash provided (used) by operations	3,355	1,306
Cash provided (used) by investing activities:
Purchases of short-term investments	(4,505)	(1,157)
Maturities of short-term investments	802	19
Sales of short-term investments	914	981
Additions to property, plant and equipment	(344)	(522)
Other investing activities	256	(109)
Cash provided (used) by investing activities	(2,877)	(788)
Cash provided (used) by financing activities:
Increase (decrease) in notes payable	(37)	291
Repayment of borrowings	(173)	(3)
Proceeds from exercise of stock options and other stock issuances	781	483
Repurchase of common stock	0	(1,921)
Dividends — common and preferred	(769)	(689)
Other financing activities	(94)	(29)
Cash provided (used) by financing activities	(292)	(1,868)
Effect of exchange rate changes on cash and equivalents	101	(46)
Net increase (decrease) in cash and equivalents	287	(1,396)
Cash and equivalents, beginning of period	8,348	4,466
CASH AND EQUIVALENTS, END OF PERIOD	8,635	3,070
Supplemental disclosure of cash flow information:
Non-cash additions to property, plant and equipment	118	86
Dividends declared and not paid	$ 435	$ 384