Consolidated Statements of Cash Flows - USD ($) $ in Thousands		6 Months Ended
		Nov. 30, 2018	Nov. 30, 2017
Cash Flows From Operating Activities:
Net income		$ 119,359	$ 212,761
Adjustments to reconcile net income to net cash provided by (used for) operating activities:
Depreciation		49,589	40,386
Amortization		23,436	23,245
Restructuring charges, net of payments		7,464
Fair value adjustments to contingent earnout obligations		1,558
Deferred income taxes		(1,400)	(32,276)
Stock-based compensation expense		12,896	14,429
Other non-cash interest expense		1,552	2,843
Realized/unrealized losses (gains) on marketable securities		7,496	(4,897)
Loss on extinguishment of debt	[1]	3,051
Other		2,349	9
Changes in assets and liabilities, net of effect from purchases and sales of businesses:
Decrease in receivables		92,398	34,136
(Increase) in inventory		(49,020)	(62,923)
(Increase) decrease in prepaid expenses and other current and long-term assets		(942)	3,919
(Decrease) in accounts payable		(117,678)	(95,302)
(Decrease) in accrued compensation and benefits		(41,470)	(45,464)
Increase (decrease) in accrued losses		1,131	(8,490)
Increase in other accrued liabilities		33,422	33,304
Other		3,098	(494)
Cash Provided By Operating Activities		148,289	115,186
Cash Flows From Investing Activities:
Capital expenditures		(57,775)	(45,295)
Acquisition of businesses, net of cash acquired		(127,848)	(54,647)
Purchase of marketable securities		(13,276)	(96,039)
Proceeds from sales of marketable securities		35,426	58,867
Other		(2,394)	469
Cash (Used For) Investing Activities		(165,867)	(136,645)
Cash Flows From Financing Activities:
Additions to long-term and short-term debt		447,843	35,036
Reductions of long-term and short-term debt		(247,440)	(1,535)
Cash dividends		(89,196)	(82,878)
Shares repurchased and shares returned for taxes		(98,458)	(12,125)
Payments of acquisition-related contingent consideration		(3,531)	(3,359)
Other		(391)	(1,464)
Cash Provided By (Used For) Financing Activities		8,827	(66,325)
Effect of Exchange Rate Changes on Cash and Cash Equivalents		(8,757)	5,144
Net Change in Cash and Cash Equivalents		(17,508)	(82,640)
Cash and Cash Equivalents at Beginning of Period		244,422	350,497
Cash and Cash Equivalents at End of Period		226,914	267,857
Cash paid during the period for:
Interest		49,687	48,769
Income Taxes		25,311	$ 60,277
Supplemental Disclosures of Non-Cash Investing and Financing Activities:
Conversion of Debt to Equity		$ 38,239

[1] In connection with the redemption of all of our outstanding 2.25% convertible senior notes in November 2018, we recognized a loss of $3.1 million, due to the fair value measurement of the instrument on the date of conversion.