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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

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Amount of liability recognized arising from contingent consideration in a business combination.

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Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of deferred tax liability attributable to taxable temporary differences due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Note 2 - Business Combinations (Details) (USD $)	3 Months Ended	0 Months Ended			3 Months Ended	1 Months Ended
Note 2 - Business Combinations (Details) (USD $)	Nov. 30, 2014	Oct. 01, 2014	Jan. 31, 2014	Aug. 01, 2014	Aug. 31, 2014	May 30, 2014	Feb. 28, 2015	May 31, 2014	May 31, 2013
Note 2 - Business Combinations (Details) [Line Items]
Payments to Acquire Businesses, Gross	$ 200,000
Business Combination, Contingent Consideration, Liability							18,342,000	11,300,000	4,504,000
Goodwill							842,849,000us-gaap_Goodwill	851,563,000us-gaap_Goodwill	1,003,463,000us-gaap_Goodwill
Regulatory Milestones [Member] \| Sentilus [Member]
Note 2 - Business Combinations (Details) [Line Items]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High		4,000,000
Sentilus [Member]
Note 2 - Business Combinations (Details) [Line Items]
Payments to Acquire Businesses, Gross		6,000,000
Business Combination, Contingent Consideration, Liability		6,300,000
Business Combination, Consideration Transferred		12,300,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill		18,800,000
Goodwill		600,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent		7,200,000
LIFECODES [Member] \| UNITED KINGDOM
Note 2 - Business Combinations (Details) [Line Items]
Business Combination, Consideration Transferred			4,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents			1,200,000
LIFECODES [Member] \| ITALY
Note 2 - Business Combinations (Details) [Line Items]
Business Combination, Consideration Transferred			2,400,000
LIFECODES [Member]
Note 2 - Business Combinations (Details) [Line Items]
Payments to Acquire Businesses, Gross				400,000	200,000
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High				200,000
Business Combination, Contingent Consideration, Liability							18,300,000		4,500,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill			3,500,000
Goodwill			1,100,000
Organ-i [Member]
Note 2 - Business Combinations (Details) [Line Items]
Payments to Acquire Businesses, Gross						12,000,000
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High						18,000,000
Business Combination, Contingent Consideration, Liability						11,300,000
Business Combination, Consideration Transferred						23,300,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill						26,700,000
Goodwill						5,800,000	5,600,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent						$ 9,100,000	$ 8,900,000