Other Intangible Assets, Net (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2011
Intangible Assets (Excluding Goodwill) [Line Items]
Amortized intangible assets	$ 3,201.1	$ 3,216.5
Other intangible assets, gross	4,146.9	3,447.5
Less: Accumulated amortization	(1,148.8)	(1,059.4)
Other intangible assets, net	2,998.1	2,388.1	2,625.6	2,493.0
Estimates of Annual Amortization
2014	170.0
2015	170.0
2016	170.0
2017	170.0
2018	170.0
Currently Marketed Products
Intangible Assets (Excluding Goodwill) [Line Items]
Amortized intangible assets	2,446.6	2,462.0
Acquired Product Technology
Intangible Assets (Excluding Goodwill) [Line Items]
Amortized intangible assets	710.0	710.0
Other Intangible Assets
Intangible Assets (Excluding Goodwill) [Line Items]
Amortized intangible assets	44.5	44.5
IPR&D
Intangible Assets (Excluding Goodwill) [Line Items]
Unamortized intangible assets	945.8	231.0
Specialty Pharmaceuticals
Intangible Assets (Excluding Goodwill) [Line Items]
Other intangible assets, net	1,582.4	1,238.0
Human Genetic Therapies
Intangible Assets (Excluding Goodwill) [Line Items]
Other intangible assets, net	760.3	474.6
Regenerative Medicine
Intangible Assets (Excluding Goodwill) [Line Items]
Other intangible assets, net	$ 655.4	$ 675.5