Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Aug. 31, 2021	Aug. 31, 2020
Cash provided (used) by operations:
Net income	$ 1,874	$ 1,518
Adjustments to reconcile net income to net cash provided (used) by operations:
Depreciation	177	176
Deferred income taxes	(145)	(220)
Stock-based compensation	136	136
Amortization, impairment and other	(9)	41
Net foreign currency adjustments	43	(45)
Changes in certain working capital components and other assets and liabilities:
(Increase) decrease in accounts receivable	36	(990)
(Increase) decrease in inventories	101	689
(Increase) decrease in prepaid expenses, operating lease right-of-use assets and other current and non-current assets	(242)	(338)
Increase (decrease) in accounts payable, accrued liabilities, operating lease liabilities and other current and non-current liabilities	(860)	(85)
Cash provided (used) by operations	1,111	882
Cash provided (used) by investing activities:
Purchases of short-term investments	(2,550)	(1,401)
Maturities of short-term investments	2,096	302
Sales of short-term investments	1,037	384
Additions to property, plant and equipment	(184)	(176)
Other investing activities	102	2
Cash provided (used) by investing activities	501	(889)
Cash provided (used) by financing activities:
Increase (decrease) in notes payable	13	(30)
Repayment of borrowings	0	(83)
Proceeds from exercise of stock options and other stock issuances	473	302
Repurchase of common stock	(752)	0
Dividends — common and preferred	(435)	(384)
Other financing activities	(42)	(53)
Cash provided (used) by financing activities	(743)	(248)
Effect of exchange rate changes on cash and equivalents	(38)	55
Net increase (decrease) in cash and equivalents	831	(200)
Cash and equivalents, beginning of period	9,889	8,348
CASH AND EQUIVALENTS, END OF PERIOD	10,720	8,148
Supplemental disclosure of cash flow information:
Non-cash additions to property, plant and equipment	103	114
Dividends declared and not paid	$ 436	$ 383