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v3.3.1.900

Intangible Assets and Goodwill (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Feb. 12, 2015
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Goodwill | $ 2,663.8 | $ 1,760.2 | $ 1,232.9 |
Intangible assets |  |  |  |
Total intangible assets, gross | 7,646.3 | 7,207.1 |  |
Accumulated Amortization | (3,561.2) | (3,178.6) |  |
Intangible assets, net | 4,085.1 | 4,028.5 |  |
Intangible Assets and Goodwill (Additional Textual) |  |  |  |
Expected future amortization expense, 2016 | 346.4 |  |  |
Expected future amortization expense, 2017 | 318.6 |  |  |
Expected future amortization expense, 2018 | 291.0 |  |  |
Expected future amortization expense, 2019 | 275.1 |  |  |
Expected future amortization expense, 2020 | 269.1 |  |  |
FiniteLivedIntangibleAssetsFutureAmortization | 1,500.2 |  |  |
Amortization of acquired intangible assets | 382.6 | 489.8 | $ 342.9 |
Out-licensed patents |  |  |  |
Intangible assets |  |  |  |
Cost | 543.3 | 543.3 |  |
Accumulated Amortization | (506.0) | (481.7) |  |
Net | $ 37.3 | 61.6 |  |
Intangible Assets and Goodwill (Additional Textual) |  |  |  |
Impairment of out-licensed patent |  | 34.7 |  |
Out-licensed patents | Minimum |  |  |  |
Intangible assets |  |  |  |
Estimated life, (In Years) | 13 years |  |  |
Out-licensed patents | Maximum |  |  |  |
Intangible assets |  |  |  |
Estimated life, (In Years) | 23 years |  |  |
Developed technology |  |  |  |
Intangible assets |  |  |  |
Cost | $ 3,005.3 | 3,005.3 |  |
Accumulated Amortization | (2,552.9) | (2,396.8) |  |
Net | $ 452.4 | 608.5 |  |
Developed technology | Minimum |  |  |  |
Intangible assets |  |  |  |
Estimated life, (In Years) | 15 years |  |  |
Developed technology | Maximum |  |  |  |
Intangible assets |  |  |  |
Estimated life, (In Years) | 23 years |  |  |
Acquired and in-licensed rights and patents |  |  |  |
Intangible assets |  |  |  |
Cost | $ 3,303.2 | 3,280.4 |  |
Accumulated Amortization | (502.3) | (300.1) |  |
Net | $ 2,800.9 | 2,980.3 |  |
Acquired and in-licensed rights and patents | Minimum |  |  |  |
Intangible assets |  |  |  |
Estimated life, (In Years) | 6 years |  |  |
Acquired and in-licensed rights and patents | Maximum |  |  |  |
Intangible assets |  |  |  |
Estimated life, (In Years) | 18 years |  |  |
In-process research and development |  |  |  |
Intangible assets |  |  |  |
Indefinite lived intangible assets useful life | Indefinite |  |  |
Cost and net | $ 730.5 | 314.1 |  |
Accumulated Amortization | $ 0.0 | 0.0 |  |
Intangible Assets and Goodwill (Additional Textual) |  |  |  |
Impairment of in-process research and development asset |  | 16.2 |  |
Trademarks and trade names |  |  |  |
Intangible assets |  |  |  |
Indefinite lived intangible assets useful life | Indefinite |  |  |
Cost and net | $ 64.0 | 64.0 |  |
Accumulated Amortization | 0.0 | $ 0.0 |  |
AVONEX | Developed technology |  |  |  |
Intangible assets |  |  |  |
Net | 443.9 |  |  |
TYSABRI product | Acquired and in-licensed rights and patents |  |  |  |
Intangible assets |  |  |  |
Net | $ 2,742.9 |  |  |
Convergence Pharmaceuticals |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Goodwill |  |  |  | $ 128.3
Intangible Assets and Goodwill (Additional Textual) |  |  |  |
In-process research and development |  |  |  | $ 424.6

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