Intangible Assets and Goodwill (Summary of Intangible Assets) (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Intangible Assets By Category    
Gross Carrying Value $ 3,849.0 $ 3,849.1
Accumulated Amortization (1,475.3) (1,410.2)
Intangible Assets, Net 2,373.7 2,438.9
Total intangible assets    
Gross Carrying Value 5,477.7 5,477.8
Intangible Assets, Net 4,002.4 4,067.6
Acquired developed product rights    
Intangible Assets By Category    
Gross Carrying Value 3,405.9 3,405.9
Accumulated Amortization (1,285.1) (1,234.1)
Intangible Assets, Net 2,120.8 2,171.8
Technology    
Intangible Assets By Category    
Gross Carrying Value 333.7 333.7
Accumulated Amortization (147.0) (135.1)
Intangible Assets, Net 186.7 198.6
Licenses    
Intangible Assets By Category    
Gross Carrying Value 66.9 67.0
Accumulated Amortization (19.2) (18.1)
Intangible Assets, Net 47.7 48.9
Other    
Intangible Assets By Category    
Gross Carrying Value 42.5 42.5
Accumulated Amortization (24.0) (22.9)
Intangible Assets, Net 18.5 19.6
Acquired IPR&D product rights    
Intangible Assets By Category    
Accumulated Amortization 0 0
Non-amortized intangible assets:    
Carrying value $ 1,628.7 $ 1,628.7