CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Nov. 30, 2012		Nov. 30, 2011
Cash Flows From Operating Activities:
Net income	$ 65,962	[1]	$ 137,259
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	27,644	[1]	25,891
Amortization	14,565	[1]	11,027
Impairment on investment in Kemrock	51,092	[1]
Estimated loss contingency	28,344	[1]
Deferred income taxes	(6,379)	[1]	(1,620)
Stock-based compensation expense	8,135	[1]	6,692
Other	(9,655)	[1]	(5,204)
Changes in assets and liabilities, net of effect from purchases and sales of businesses:
Decrease in receivables	63,687	[1]	76,864
(Increase) in inventory	(25,936)	[1]	(24,687)
Decrease (increase) in prepaid expenses and other current and long-term assets	19,990	[1]	(10,040)
(Decrease) in accounts payable	(95,485)	[1]	(46,345)
(Decrease) in accrued compensation and benefits	(46,190)	[1]	(36,662)
Increase (decrease) in accrued loss reserves	3,984	[1]	(5,313)
Increase (decrease) in other accrued liabilities	46,440	[1]	(14,952)
Other	(18,577)	[1]	(2,880)
Cash From Operating Activities	127,621	[1]	110,030
Cash Flows From Investing Activities:
Capital expenditures	(30,849)	[1]	(18,353)
Acquisition of businesses, net of cash acquired	(396,785)	[1]	(132,905)
Purchase of marketable securities	(68,442)	[1]	(39,337)
Proceeds from sales of marketable securities	58,194	[1]	36,937
Other	4,103	[1]	4,072
Cash (Used For) Investing Activities	(433,779)	[1]	(149,586)
Cash Flows From Financing Activities:
Additions to long-term and short-term debt	334,247	[1]	7,215
Reductions of long-term and short-term debt	(41,269)	[1]	(22,845)
Cash dividends	(58,054)	[1]	(55,620)
Repurchase of stock	(1,094)	[1]	(5,999)
Other	5,650	[1]	3,181
Cash From (Used For) Financing Activities	239,480	[1]	(74,068)
Effect of Exchange Rate Changes on Cash and Cash Equivalents	12,650	[1]	(20,432)
Net Change in Cash and Cash Equivalents	(54,028)	[1]	(134,056)
Cash and Cash Equivalents at Beginning of Period	315,968	[1]	435,011
Cash and Cash Equivalents at End of Period	$ 261,940	[1]	$ 300,955

[1] Restated