Acquisitions	12 Months Ended
Dec. 31, 2013
Business Combinations [Abstract]
Acquisitions [Text Block]	Note 3: Acquisitions During 2012 and 2011, we completed the acquisitions of ChemGen Corporation (ChemGen) and the animal health business of Janssen Pharmaceuticia NV (Janssen), respectively. These acquisitions were accounted for as business combinations under the acquisition method of accounting. The assets acquired and liabilities assumed were recorded at their respective fair values as of the acquisition date in our consolidated financial statements. The determination of estimated fair value required management to make significant estimates and assumptions. The excess of the purchase price over the fair value of the acquired net assets, where applicable, has been recorded as goodwill. The results of operations of these acquisitions are included in our consolidated financial statements from the date of acquisition. None of these acquisitions were material to our consolidated financial statements. In addition to the acquisitions of businesses, we also acquired assets in development in 2013 and 2011 which are further discussed below in Product Acquisitions and in Note 4, respectively. Upon acquisition, the acquired IPR&D related to these products was immediately written off as an expense because the products had no alternative future use. For the years ended December 31, 2013 and 2011, we recorded acquired IPR&D charges of $57.1 million and $388.0 million, respectively, associated with these transactions. There were no acquired IPR&D charges in 2012. In connection with the arrangements described below, our partners may be entitled to future milestones and royalties based on sales should these products be approved for commercialization. Acquisition of Businesses ChemGen On February 17, 2012, we acquired all of the outstanding stock of ChemGen Corporation, a privately-held bioscience company specializing in the development and commercialization of innovative feed-enzyme products that improve the efficiency of poultry, egg, and meat production, for total purchase consideration of $206.9 million in cash. In connection with this acquisition, we recorded $151.5 million of marketed product assets and $55.4 million of other net assets. Janssen On July 7, 2011, we acquired the animal health business of Janssen, a Johnson & Johnson company, for total purchase consideration of $307.8 million in cash. We obtained a portfolio of more than 50 marketed animal health products. In connection with this acquisition, we recorded $234.4 million of marketed product assets, $29.6 million of acquired IPR&D assets, and $43.8 million of other net assets. Product Acquisitions In December 2013, we acquired all development and commercial rights for a calcitonin gene-related peptide (CGRP) antibody currently being studied as a potential treatment for the prevention of frequent, recurrent migraine headaches for $57.1 million in cash. At the time of the purchase, the product had completed a successful Phase II proof-of-concept study and had no alternative future use. The related $57.1 million charge for acquired IPR&D was included as expense in the fourth quarter of 2013 and is deductible for tax purposes.

Note 3: Acquisitions

During 2012 and 2011, we completed the acquisitions of ChemGen Corporation (ChemGen) and the animal health business of Janssen Pharmaceuticia NV (Janssen), respectively. These acquisitions were accounted for as business combinations under the acquisition method of accounting. The assets acquired and liabilities assumed were recorded at their respective fair values as of the acquisition date in our consolidated financial statements. The determination of estimated fair value required management to make significant estimates and assumptions. The excess of the purchase price over the fair value of the acquired net assets, where applicable, has been recorded as goodwill. The results of operations of these acquisitions are included in our consolidated financial statements from the date of acquisition. None of these acquisitions were material to our consolidated financial statements.

In addition to the acquisitions of businesses, we also acquired assets in development in 2013 and 2011 which are further discussed below in Product Acquisitions and in Note 4, respectively. Upon acquisition, the acquired IPR&D related to these products was immediately written off as an expense because the products had no alternative future use. For the years ended December 31, 2013 and 2011, we recorded acquired IPR&D charges of $57.1 million and $388.0 million, respectively, associated with these transactions. There were no acquired IPR&D charges in 2012.

In connection with the arrangements described below, our partners may be entitled to future milestones and royalties based on sales should these products be approved for commercialization.

Acquisition of Businesses

ChemGen

On February 17, 2012, we acquired all of the outstanding stock of ChemGen Corporation, a privately-held bioscience company specializing in the development and commercialization of innovative feed-enzyme products that improve the efficiency of poultry, egg, and meat production, for total purchase consideration of $206.9 million in cash. In connection with this acquisition, we recorded $151.5 million of marketed product assets and $55.4 million of other net assets.

Janssen

On July 7, 2011, we acquired the animal health business of Janssen, a Johnson & Johnson company, for total purchase consideration of $307.8 million in cash. We obtained a portfolio of more than 50 marketed animal health products. In connection with this acquisition, we recorded $234.4 million of marketed product assets, $29.6 million of acquired IPR&D assets, and $43.8 million of other net assets.

Product Acquisitions

In December 2013, we acquired all development and commercial rights for a calcitonin gene-related peptide (CGRP) antibody currently being studied as a potential treatment for the prevention of frequent, recurrent migraine headaches for $57.1 million in cash. At the time of the purchase, the product had completed a successful Phase II proof-of-concept study and had no alternative future use. The related $57.1 million charge for acquired IPR&D was included as expense in the fourth quarter of 2013 and is deductible for tax purposes.