CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Aug. 31, 2020	Aug. 31, 2019
Cash flows from operating activities:
Net income	$ 2,251	$ 2,137
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	356	336
Amortization of intangible assets	345	414
Deferred income taxes	173	(14)
Stock-based compensation	428	446
Other, net	78	60
Changes in operating assets and liabilities, net of effects from acquisitions:
Decrease in trade receivables, net	1,077	1,313
Decrease in prepaid expenses and other assets	380	481
Decrease in accounts payable and other liabilities	(294)	(813)
Decrease in income taxes payable	(586)	(121)
Increase in deferred revenues	1,745	1,761
Net cash provided by operating activities	5,953	6,000
Cash flows from investing activities:
Purchases of marketable securities and other investments	(10,678)	(216)
Proceeds from maturities of marketable securities and other investments	1,459	879
Proceeds from sales of marketable securities	0	12,111
Acquisitions, net of cash acquired	0	(2)
Capital expenditures	(436)	(386)
Net cash (used for) provided by investing activities	(9,655)	12,386
Cash flows from financing activities:
Payments for repurchases of common stock	(4,945)	(5,005)
Proceeds from issuances of common stock	567	316
Shares repurchased for tax withholdings upon vesting of restricted stock-based awards	(478)	(514)
Payments of dividends to stockholders	(730)	(795)
Repayments of borrowings	(1,000)	(1,750)
Other, net	93	(54)
Net cash used for financing activities	(6,493)	(7,802)
Effect of exchange rate changes on cash and cash equivalents	232	(15)
Net (decrease) increase in cash and cash equivalents	(9,963)	10,569
Cash and cash equivalents at beginning of period	37,239	20,514
Cash and cash equivalents at end of period	27,276	31,083
Non-cash financing activities:
Change in unsettled repurchases of common stock	$ 55	$ (5)