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Acquisitions Acquisitions (Details Textual) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Feb. 28, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014 | Feb. 12, 2015
Business Acquisition [Line Items] |  |  |  |  |  |  |
Contingent consideration |  | $ 0.0 |  | $ 0.0 | $ 274.5 | $ 0.0 |
Convergence Pharmaceuticals |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Cash portion of consideration | $ 200.1 |  |  |  |  |  |
Potential future milestone payments |  |  |  |  |  |  | $ 450.0
Contingent consideration | $ 274.5 |  |  |  |  |  |
Increase in the value of our estimated contingent consideration |  |  | $ 36.0 |  |  |  |
Increase in goodwill |  |  | $ 36.0 |  |  |  |
Discount rate | 2.00% |  |  |  |  |  |
In-process research and development and other intangible assets |  |  |  |  |  |  | 424.6
Convergence Pharmaceuticals | Raxatrigine |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Potential future milestone payments |  |  |  |  |  |  | 350.0
Discount rate | 11.00% |  |  |  |  |  |
Remaining cost to complete CNV1014802 |  |  |  |  |  |  | 145.0
In-process research and development and other intangible assets |  |  |  |  |  |  | 200.0
Convergence Pharmaceuticals | Neuropathic pain indications |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Remaining cost to complete CNV1014802 |  |  |  |  |  |  | 415.0
In-process research and development and other intangible assets |  |  |  |  |  |  | $ 220.0

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