CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Nov. 30, 2020	Nov. 30, 2019
Cash flows from operating activities:
Net income	$ 4,693	$ 4,448
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	742	677
Amortization of intangible assets	690	821
Deferred income taxes	(43)	(263)
Stock-based compensation	916	843
Other, net	184	117
Changes in operating assets and liabilities, net of effects from acquisitions:
Decrease in trade receivables, net	1,263	1,079
Decrease in prepaid expenses and other assets	545	638
Decrease in accounts payable and other liabilities	(248)	(916)
Decrease in income taxes payable	(1,243)	(613)
Decrease in deferred revenues	(158)	(318)
Net cash provided by operating activities	7,341	6,513
Cash flows from investing activities:
Purchases of marketable securities and other investments	(15,578)	(314)
Proceeds from maturities of marketable securities and other investments	10,776	2,204
Proceeds from sales of marketable securities	3	12,575
Acquisitions, net of cash acquired	0	(111)
Capital expenditures	(1,004)	(735)
Net cash (used for) provided by investing activities	(5,803)	13,619
Cash flows from financing activities:
Payments for repurchases of common stock	(8,962)	(9,996)
Proceeds from issuances of common stock	772	617
Shares repurchased for tax withholdings upon vesting of restricted stock-based awards	(520)	(559)
Payments of dividends to stockholders	(1,447)	(1,562)
Repayments of borrowings	(1,000)	(4,500)
Other, net	110	(96)
Net cash used for financing activities	(11,047)	(16,096)
Effect of exchange rate changes on cash and cash equivalents	271	(10)
Net (decrease) increase in cash and cash equivalents	(9,238)	4,026
Cash and cash equivalents at beginning of period	37,239	20,514
Cash and cash equivalents at end of period	28,001	24,540
Non-cash financing activities:
Change in unsettled repurchases of common stock	$ 38	$ 4