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Commitments and Contingencies - Legal Proceedings (Details) - USD ($)
$ in Millions
3 Months Ended
Feb. 05, 2016
Mar. 31, 2016
Sandoz Paragraph IV Certification Letter    
Legal Proceedings    
Period of time in during which a patent infringement suit can be filed in federal district court after receipt of the Paragraph IV certification 45 days  
Minimum period of time before the FDA will grant approval of the application if a patent infringement suit is filed 30 months  
European Patent Organization Appeal    
Legal Proceedings    
Patent revocation, impact on revenue   $ 0.0
Ferumoxytol | European Patent Organization Appeal    
Legal Proceedings    
Term of data protection entitled to under EU regulations   8 years
Term of market exclusivity entitled to under EU regulations   10 years