Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Cash provided (used) by operations:
Net income	$ 2,539	$ 4,029	$ 1,933
Adjustments to reconcile net income to net cash provided (used) by operations:
Depreciation	721	705	747
Deferred income taxes	(380)	34	647
Stock-based compensation	429	325	218
Amortization, impairment and other	398	15	27
Net foreign currency adjustments	23	233	(99)
Changes in certain working capital components and other assets and liabilities:
(Increase) decrease in accounts receivable	1,239	(270)	187
(Increase) decrease in inventories	(1,854)	(490)	(255)
(Increase) decrease in prepaid expenses, operating lease right-of-use assets and other current and non-current assets	(654)	(203)	35
Increase (decrease) in accounts payable, accrued liabilities, operating lease liabilities and other current and non-current liabilities	24	1,525	1,515
Cash provided (used) by operations	2,485	5,903	4,955
Cash provided (used) by investing activities:
Purchases of short-term investments	(2,426)	(2,937)	(4,783)
Maturities of short-term investments	74	1,715	3,613
Sales of short-term investments	2,379	2,072	2,496
Additions to property, plant and equipment	(1,086)	(1,119)	(1,028)
Other investing activities	31	5	(22)
Cash provided (used) by investing activities	(1,028)	(264)	276
Cash provided (used) by financing activities:
Proceeds from borrowings, net of debt issuance costs	6,134	0	0
Increase (decrease) in notes payable, net	49	(325)	13
Proceeds from exercise of stock options and other stock issuances	885	700	733
Repurchase of common stock	(3,067)	(4,286)	(4,254)
Dividends — common and preferred	(1,452)	(1,332)	(1,243)
Other financing activities	(58)	(50)	(84)
Cash provided (used) by financing activities	2,491	(5,293)	(4,835)
Effect of exchange rate changes on cash and equivalents	(66)	(129)	45
Net increase (decrease) in cash and equivalents	3,882	217	441
Cash and equivalents, beginning of year	4,466	4,249	3,808
CASH AND EQUIVALENTS, END OF YEAR	8,348	4,466	4,249
Cash paid during the year for:
Interest, net of capitalized interest	140	153	125
Income taxes	1,028	757	529
Non-cash additions to property, plant and equipment	121	160	294
Dividends declared and not paid	$ 385	$ 347	$ 320