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Other Consolidated Financial Statement Detail (Details Textual) (USD $) | 12 Months Ended |  |  | 12 Months Ended |  | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2013 Cambridge Leases | Dec. 31, 2012 Stromedix, Inc. | Mar. 08, 2012 Stromedix, Inc. | Dec. 31, 2011 Biogen Dompe SRL and Biogen Dompe Switzerland GmbH | Mar. 04, 2008 6.0% Senior notes due 2013
Business Acquisition |  |  |  |  |  |  |  |
Derecognition of construction in progress assets |  |  |  | $ 161,500,000 |  |  |  |
Total purchase price allocated to IPR&D |  |  |  |  |  | 219,200,000 |  |
Total purchase price allocated to goodwill | 1,232,916,000 | 1,201,296,000 | 1,146,300,000 |  |  | 48,200,000 |  |
Contingent consideration obligation | $ 0 | $ 122,200,000 |  |  | $ 122,200,000 |  | $ 38,800,000 |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  | 6.00%

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