Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Nov. 30, 2018	Nov. 30, 2017
Cash provided by operations:
Net income	$ 1,939	$ 1,717
Adjustments to reconcile net income to net cash provided by operations:
Depreciation	349	366
Deferred income taxes	11	(83)
Stock-based compensation	133	103
Amortization and other	10	10
Net foreign currency adjustments	210	(67)
Changes in certain working capital components and other assets and liabilities:
(Increase) decrease in accounts receivable	(324)	143
(Increase) decrease in inventories	(263)	(243)
(Increase) decrease in prepaid expenses and other current and non-current assets	(124)	(208)
Increase (decrease) in accounts payable, accrued liabilities and other current and non-current liabilities	884	160
Cash provided by operations	2,825	1,898
Cash used by investing activities:
Purchases of short-term investments	(1,771)	(3,002)
Maturities of short-term investments	1,181	2,229
Sales of short-term investments	971	1,044
Additions to property, plant and equipment	(630)	(498)
Disposals of property, plant and equipment	4	1
Cash used by investing activities	(245)	(226)
Cash used by financing activities:
Long-term debt payments, including current portion	(3)	(3)
Increase (decrease) in notes payable	(327)	904
Payments on capital lease and other financing obligations	(14)	(11)
Proceeds from exercise of stock options and other stock issuances	340	320
Repurchases of common stock	(2,637)	(1,776)
Dividends — common and preferred	(638)	(595)
Tax payments for net share settlement of equity awards	(11)	(53)
Cash used by financing activities	(3,290)	(1,214)
Effect of exchange rate changes on cash and equivalents	(116)	38
Net increase (decrease) in cash and equivalents	(826)	496
Cash and equivalents, beginning of period	4,249	3,808
CASH AND EQUIVALENTS, END OF PERIOD	3,423	4,304
Supplemental disclosure of cash flow information:
Non-cash additions to property, plant and equipment	128	92
Dividends declared and not paid	$ 348	$ 325