Business Combinations (Details) - USD ($) $ in Thousands					3 Months Ended		9 Months Ended
	May 13, 2017	May 11, 2017	May 09, 2017	Jul. 02, 2016	Sep. 30, 2017		Sep. 30, 2017		Jul. 03, 2017	Jan. 20, 2017	Dec. 31, 2016		Jul. 01, 2016
Acquired Indefinite-lived Intangible Assets [Line Items]
Ireland Income Tax Rate							13.00%
Payments to Acquire Businesses, Gross				$ 109,938
Business Acquisition, Percentage of Voting Interests Acquired													6.00%
Payments to Acquire Equity Method Investments			$ 2,200
Business Combination, Consideration Transferred				244,305
Business Combination, Contingent Consideration, Liability													$ 47,400
Anniversary payment					$ 0	[1]	$ 0	[1]	$ 89,000		$ 88,001	[1]	87,000
Cash contribution for equity investment									$ 32,000
Business Combination, Consideration Transferred, Liabilities Incurred				87,007
Business Combination, Consideration Transferred, Other				47,360
Indefinite-lived Intangible Assets Acquired				3,735
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets													244,305
Federal income tax rate							35.00%
Accounts and Notes Receivable, Net					51,400		$ 51,400				$ 105,300
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value		$ 31,700
Prior Period Reclassification Adjustment					$ 2,200		$ 29,900
Noden [Member]
Acquired Indefinite-lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life							10 years
Noden [Member] | Cash to be paid [Member]
Acquired Indefinite-lived Intangible Assets [Line Items]
Other Commitment													89,000
Noden [Member] | Milestone [Member]
Acquired Indefinite-lived Intangible Assets [Line Items]
Other Commitment													95,000
PDL BioPharma [Member] | Milestone [Member]
Acquired Indefinite-lived Intangible Assets [Line Items]
Other Commitment													$ 38,000
LENSAR [Member]
Acquired Indefinite-lived Intangible Assets [Line Items]
Contractual Obligation										$ 2,800
Accounts and Notes Receivable, Net		43,900
Gain (Loss) on Investments	$ 4,000	$ 12,200
Acquired rights [Member]
Acquired Indefinite-lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired				216,690
Business Combination, Consideration Transferred				216,700
Customer Relationships [Member]
Acquired Indefinite-lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired				23,880
Business Combination, Consideration Transferred				$ 23,900

[1] unaudited