Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Feb. 28, 2021	Feb. 29, 2020
Cash Flows From Operating Activities:
Net Income	$ 347,136	$ 195,907
Adjustments to reconcile net income to net cash provided by (used for) operating activities:
Depreciation and amortization	109,119	113,520
Restructuring charges, net of payments	(3,830)	(132)
Fair value adjustments to contingent earnout obligations	1,829
Deferred income taxes	24,473	2,505
Stock-based compensation expense	31,157	18,881
Net (gain) on marketable securities	(29,652)	(3,063)
Other	(394)	(371)
Changes in assets and liabilities, net of effect from purchases and sales of businesses:
Decrease in receivables	181,032	282,052
(Increase) in inventory	(57,702)	(73,566)
Decrease in prepaid expenses and other current and long-term assets	19,133	19,747
Increase (decrease) in accounts payable	31,825	(70,286)
(Decrease) in accrued compensation and benefits	(1,107)	(38,468)
Increase in accrued losses	3,054	3,120
(Decrease) in other accrued liabilities	(7,615)	(68,906)
Other	3,448	237
Cash Provided By Operating Activities	651,906	381,177
Cash Flows From Investing Activities:
Capital expenditures	(103,226)	(105,430)
Acquisition of businesses, net of cash acquired	(114,355)	(65,102)
Purchase of marketable securities	(30,784)	(17,076)
Proceeds from sales of marketable securities	28,773	21,325
Other	1,664	2,203
Cash (Used For) Investing Activities	(217,928)	(164,080)
Cash Flows From Financing Activities:
Additions to long-term and short-term debt		698,256
Reductions of long-term and short-term debt	(249,518)	(664,040)
Cash dividends	(145,457)	(138,784)
Repurchases of common stock	(24,628)	(100,000)
Shares of common stock returned for taxes	(17,083)	(16,579)
Payments of acquisition-related contingent consideration	(2,218)	(227)
Other	(786)	(665)
Cash (Used For) Financing Activities	(439,690)	(222,039)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	21,510	(5,984)
Net Change in Cash and Cash Equivalents	15,798	(10,926)
Cash and Cash Equivalents at Beginning of Period	233,416	223,168
Cash and Cash Equivalents at End of Period	249,214	212,242
Cash paid during the period for:
Interest	58,672	79,541
Income Taxes, net of refunds	$ 117,546	$ 89,042