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Acquisitions (Narrative) (Details) (Bioniche Pharma Holdings Limited [Member], USD $)
3 Months Ended9 Months Ended
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Sep. 07, 2010
Bioniche Pharma Holdings Limited [Member]
    
Percentage of acquisition of outstanding equity in Bioniche Pharma   100.00%
Purchase price for acquisition of assets and liabilities for Bionic Pharma $ 543,736,000  
Rate used to discount net cash inflows to present values 11.00%  
Percentage of fair value of IPR&D represented by three research projects 60.00%  
Expected cost to complete the three projects 10,000,000  
Identified intangible assets 186,000,000  
Goodwill 207,390,000  
Business acquisition pro forma amortization of intangibles$ 6,800,000 $ 20,300,000