Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Nov. 30, 2025	Nov. 30, 2024
Cash Flows from Operating Activities:
Net Income	$ 389,314	$ 412,004
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	103,507	92,743
Fair value adjustments to contingent earnout obligations	(12,707)	0
Deferred income taxes	(2,429)	(31,252)
Stock-based compensation expense	14,574	13,549
Net (gain) on marketable securities	(14,222)	(10,684)
Net (gain) on sales of assets and businesses	(4,730)	0
Other	(290)	(335)
Changes in assets and liabilities, net of effect from purchases and sales of businesses:
Decrease in receivables	190,741	122,603
(Increase) in inventory	(26,414)	(42,981)
Decrease (increase) in prepaid expenses and other current and long-term assets	14,894	(11,193)
(Decrease) increase in accounts payable	(13,555)	34,364
(Decrease) in accrued compensation and benefits	(58,267)	(84,929)
(Decrease) increase in accrued losses	(4,248)	2,827
Increase in other accrued liabilities	7,041	30,792
Cash Provided by Operating Activities	583,209	527,508
Cash Flows from Investing Activities:
Capital expenditures	(111,797)	(100,732)
Acquisition of businesses, net of cash acquired	(161,633)	(85,649)
Purchase of marketable securities	(20,473)	(23,533)
Proceeds from sales of marketable securities	12,958	12,802
Proceeds from sales of assets and businesses, net	3,866	0
Other	0	(1,424)
Cash (Used for) Investing Activities	(277,079)	(198,536)
Cash Flows from Financing Activities:
Additions to long-term and short-term debt	110,000	25,086
Reductions of long-term and short-term debt	(236,509)	(134,022)
Cash dividends	(133,719)	(124,514)
Repurchases of common stock	(35,000)	(35,000)
Shares of common stock returned for taxes	(2,167)	(16,150)
Payments of acquisition-related contingent consideration	0	(1,122)
Other	(438)	(689)
Cash (Used for) Financing Activities	(297,833)	(286,411)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	6,158	(11,257)
Net Change in Cash and Cash Equivalents	14,455	31,304
Cash and Cash Equivalents at Beginning of Period	302,137	237,379
Cash and Cash Equivalents at End of Period	316,592	268,683
Cash paid during the period for:
Interest	55,744	47,989
Income Taxes, net of refunds	135,211	129,963
Supplemental Disclosures of Noncash Investing Activities:
Capital expenditures accrued within accounts payable at quarter-end	$ 15,679	$ 16,406