Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Aug. 31, 2022	Aug. 31, 2021
Operating Activities:
Net income	$ 875	$ 1,112
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	1,024	971
Provision for uncollectible accounts	245	117
Stock-based compensation	68	69
Other noncash items including leases and deferred income taxes	774	884
Business realignment and optimization costs/(payments), net	(14)	36
Changes in assets and liabilities:
Receivables	259	726
Other assets	(170)	(171)
Accounts payable and other liabilities	(1,473)	(1,616)
Other, net	19	(44)
Cash provided by operating activities	1,607	2,084
Investing Activities:
Capital expenditures	(1,284)	(1,570)
Purchase of investments	(35)
Proceeds from asset dispositions and other	10	20
Cash used in investing activities	(1,309)	(1,550)
Financing Activities:
Principal payments on debt	(29)	(64)
Proceeds from stock issuances	81	84
Dividends paid	(299)	(200)
Purchase of treasury stock		(549)
Other, net		(1)
Cash (used in) provided by financing activities	(247)	(730)
Effect of exchange rate changes on cash	(98)	(38)
Net (decrease) increase in cash and cash equivalents	(47)	(234)
Cash and cash equivalents at beginning of period	6,897	7,087
Cash and cash equivalents at end of period	$ 6,850	$ 6,853