2. Acquisitions (Details) (USD $)			3 Months Ended			0 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 GnuBIO [Member]	Sep. 30, 2014 GnuBIO [Member]	Apr. 10, 2014 GnuBIO [Member]	Jan. 10, 2013 AbD Serotec [Member]
Business Acquisition [Line Items]
Indefinite-lived Intangible Assets Acquired			$ 46,400,000
Cash Acquired from Acquisition						7,300,000
Business Combination, Consideration Transferred			50,400,000			62,200,000
Payments to Acquire Businesses, Gross			39,700,000
Business Combination, Contingent Consideration, Liability				7,200,000	10,700,000
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High					70,000,000
Goodwill	513,454,000	517,770,000			15,200,000	14,900,000
Finite-lived Intangible Assets Acquired						44,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net					$ (11,200,000)	$ 3,300,000