Goodwill and Other Intangibles (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets, Gross	$ 5,833.6	$ 5,300.9
Impairment of Intangible Assets, Finite-lived	0
Goodwill, Impairment Loss	0us-gaap_GoodwillImpairmentLoss
Goodwill	1,758.1us-gaap_Goodwill	1,516.8us-gaap_Goodwill
Finite-Lived Intangible Assets, Accumulated Amortization	2,960.8	2,520.2
Finite-Lived Intangible Assets, Net	2,872.8us-gaap_FiniteLivedIntangibleAssetsNet	2,780.7us-gaap_FiniteLivedIntangibleAssetsNet
Finite-Lived Intangible Assets, Weighted-Average Useful Life	10 years
Amortization of Intangible Assets	535.9us-gaap_AmortizationOfIntangibleAssets	555.0us-gaap_AmortizationOfIntangibleAssets	563.0us-gaap_AmortizationOfIntangibleAssets
Future Amortization Expense, Year One	465
Future Amortization Expense, Year Two	360
Future Amortization Expense, Year Three	325
Future Amortization Expense, Year Four	215
Future Amortization Expense, Year Five	185
Impairment charges, indefinite lived intangibles	0	0	205.0
Indefinite-Lived Intangible Assets, Gross	1,769.5	1,550.4
In-process Research and Development [Member]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	11.4	33.6
Human Pharmaceutical Products [Member]
Goodwill	1,354.3	1,354.7
Animal Health Products [Member]
Goodwill	403.8	162.1
Developed Technology Rights [Member]
Finite-Lived Intangible Assets, Gross	5,684.3	5,136.1
Finite-Lived Intangible Assets, Accumulated Amortization	2,915.6	2,447.2
Finite-Lived Intangible Assets, Net	2,768.7	2,688.9
Other Intangible Assets [Member]
Finite-Lived Intangible Assets, Gross	149.3	164.8
Finite-Lived Intangible Assets, Accumulated Amortization	45.2	73.0
Finite-Lived Intangible Assets, Net	$ 104.1	$ 91.8

Sum of the gross carrying amounts before accumulated amortization (if applicable) as of the balance sheet date of all intangible assets. The aggregate gross carrying amount (including any previously recognized impairment charges) of a major intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

No definition available.