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Investments in Variable Interest Entities (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Variable Interest Entity [Line Items] |  |  |  |  |
Net income attributable to noncontrolling interests, net of tax |  |  | $ 46.2 | $ 6.8 | $ 0.0
Investment in Variable Interest Entities (Textual) |  |  |  |  |
Additional investments committed to if certain development milestones are achieved | $ 559.0 |  | 559.0 |  |
Investment in biotechnology companies that are determined to be unconsolidated variable interest entities | 29.2 |  | 29.2 | $ 7.9 |
Neurimmune |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Net income attributable to noncontrolling interests, net of tax |  | $ 60.0 |  |  |
Investment in Variable Interest Entities (Textual) |  |  |  |  |
Remaining potential development milestone payments and royalties on commercial sales under the terms of collaboration agreement |  |  | $ 275.0 |  |
Percentage of funding for R&D cost required in support of the collaboration agreement |  |  | 100.00% |  |
Rodin Therapeutics |  |  |  |  |
Investment in Variable Interest Entities (Textual) |  |  |  |  |
Payments to acquire interest in peferred stock of an affiliates | 8.0 |  |  |  |
Additional investments committed to if certain development milestones are achieved | 4.0 |  | $ 4.0 |  |
In-process research and development | 8.7 |  |  |  |
Minority interest in our stockholder's equity | $ 10.9 |  | $ 10.9 |  |

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- Definition Investment in Variable Interest Entities. + References No definition available. + Details
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- Definition Expected total payments including upfront and milestone payments as well as the greater of an annual maintenance fee or usage-based royalty payments under the terms of collaboration agreement. + References No definition available. + Details
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- Definition Amount of Net Income (Loss) attributable to noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591551-111686 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684 + Details
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- Definition Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
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