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Inventory (Tables) | 6 Months Ended
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Jun. 30, 2015
Inventory Disclosure [Abstract] |
Components of inventory | The components of inventory are summarized as follows:
(In millions) | As of June 30, 2015 |  | As of December 31, 2014
Raw materials | $ | 173.2 |  |  | $ | 128.3 |
Work in process | 516.7 |  |  | 511.5 |
Finished goods | 175.8 |  |  | 164.2 |
Total inventory | $ | 865.7 |  |  | $ | 804.0 |

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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 FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766 Reference 2: 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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