Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Aug. 31, 2019	Aug. 31, 2018
Cash provided by operations:
Net income	$ 1,367	$ 1,092
Adjustments to reconcile net income to net cash provided by operations:
Depreciation	169	178
Deferred income taxes	(42)	18
Stock-based compensation	80	41
Amortization and other	6	3
Net foreign currency adjustments	49	166
Changes in certain working capital components and other assets and liabilities:
(Increase) decrease in accounts receivable	(456)	(294)
(Increase) decrease in inventories	(270)	(25)
(Increase) decrease in prepaid expenses, operating lease right-of-use assets and other current and non-current assets	38	(83)
Increase (decrease) in accounts payable, accrued liabilities, operating lease liabilities and other current and non-current liabilities	(547)	205
Cash provided by operations	394	1,301
Cash provided (used) by investing activities:
Purchases of short-term investments	(504)	(980)
Maturities of short-term investments	16	400
Sales of short-term investments	533	586
Additions to property, plant and equipment	(284)	(343)
Other investing activities	(109)	4
Cash provided (used) by investing activities	(348)	(333)
Cash used by financing activities:
Increase (decrease) in notes payable	241	(321)
Proceeds from exercise of stock options and other stock issuances	111	187
Repurchase of common stock	(999)	(1,360)
Dividends — common and preferred	(345)	(320)
Other financing activities	(18)	(18)
Cash used by financing activities	(1,010)	(1,832)
Effect of exchange rate changes on cash and equivalents	(56)	(103)
Net increase (decrease) in cash and equivalents	(1,020)	(967)
Cash and equivalents, beginning of period	4,466	4,249
CASH AND EQUIVALENTS, END OF PERIOD	3,446	3,282
Supplemental disclosure of cash flow information:
Non-cash additions to property, plant and equipment	90	110
Dividends declared and not paid	$ 344	$ 318