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v3.19.1

Intangible Assets and Goodwill (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Dec. 31, 2018
Intangible assets |  |  |
Total intangible assets, gross | $ 7,731.8 |  | $ 7,727.3
Accumulated Amortization | (4,675.6) |  | (4,607.3)
Intangible assets, net | 3,056.2 |  | 3,120.0
Amortization and impairment of acquired intangible assets | 68.2 | $ 103.9 |
Intangible Assets and Goodwill (Textual) [Abstract] |  |  |
Accumulated impairment losses related to goodwill | 0.0 |  |
Expected future amortization expense, 2019 (remaining nine months) | 200.0 |  |
Expected future amortization expense, 2020 | 290.0 |  |
Expected future amortization expense, 2021 | 250.0 |  |
Expected future amortization expense, 2022 | 250.0 |  |
Expected future amortization expense, 2023 | 230.0 |  |
Expected future amortization expense, 2024 | 190.0 |  |
Out-licensed patents |  |  |
Intangible assets |  |  |
Cost | 543.3 |  | 543.3
Net | 0.9 |  | 1.0
Accumulated Amortization | $ (542.4) |  | (542.3)
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
Net | 261.2 |  | 270.5
Accumulated Amortization | $ (2,744.1) |  | (2,734.8)
Developed technology | Minimum |  |  |
Intangible assets |  |  |
Estimated life, (in years) | 15 years |  |
Developed technology | Maximum |  |  |
Intangible assets |  |  |
Estimated life, (in years) | 23 years |  |
Developed technology | AVONEX |  |  |
Intangible assets |  |  |
Net | $ 256.2 |  |
Acquired and in-licensed rights and patents |  |  |
Intangible assets |  |  |
Cost | 3,638.7 |  | 3,638.7
Net | 2,249.6 |  | 2,308.5
Accumulated Amortization | $ (1,389.1) |  | (1,330.2)
Acquired and in-licensed rights and patents | Minimum |  |  |
Intangible assets |  |  |
Estimated life, (in years) | 4 years |  |
Acquired and in-licensed rights and patents | Maximum |  |  |
Intangible assets |  |  |
Estimated life, (in years) | 18 years |  |
Acquired and in-licensed rights and patents | TYSABRI |  |  |
Intangible assets |  |  |
Net | $ 1,980.8 |  |
Acquired and in-licensed rights and patents | TECFIDERA |  |  |
Intangible assets |  |  |
Net | $ 63.1 |  |
In Process Research and Development |  |  |
Intangible assets |  |  |
Indefinite lived intangible assets useful life | Indefinite until commercialization |  |
Cost and Net | $ 480.5 |  | 476.0
Accumulated Amortization | $ 0.0 |  | 0.0
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

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