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Inventory (Tables) | 12 Months Ended
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Dec. 31, 2013
Inventory Disclosure [Abstract] |
Components of inventory |
| As of December 31,
(In millions) | 2013 |  | 2012
Raw materials | $ | 115.0 |  |  | $ | 101.8 |
Work in process | 435.4 |  |  | 244.9 |
Finished goods | 108.6 |  |  | 100.7 |
Total inventory | $ | 659.0 |  |  | $ | 447.4 |
Components of inventory by product |
| As of December 31,
(In millions) | 2013 |  | 2012
AVONEX | $ | 176.9 |  |  | $ | 144.0 |
TYSABRI | 170.9 |  |  | 114.8 |
TECFIDERA | 33.6 |  |  | — |
Other | 162.6 |  |  | 86.8 |
Total finished goods and work in process | 544.0 |  |  | 345.6 |
Raw materials | 115.0 |  |  | 101.8 |
Total inventory | $ | 659.0 |  |  | $ | 447.4 |

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- Definition Components of inventory by product + References No definition available. + Details
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- Details
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- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 2 -Paragraph 6 -Subparagraph a,b,c -Article 5 + Details
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