Other Intangible Assets, Net (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011	Mar. 31, 2011	Dec. 31, 2010
Intangible Assets (Excluding Goodwill) [Line Items]
Amortized intangible assets	$ 3,276.3	$ 3,233.9
Other intangible assets, gross	3,399.5	3,353.7
Less: Accumulated amortization	(910.5)	(860.7)
Other intangible assets, net	2,489.0	2,493.0	1,985.8	1,978.9
Other Disclosures
Estimated future intangible assets amortization charge - Year 1	191
Estimated future intangible assets amortization charge - Year 2	191
Estimated future intangible assets amortization charge - Year 3	191
Estimated future intangible assets amortization charge - Year 4	191
Estimated future intangible assets amortization charge - Year 5	191
Currently Marketed Products
Intangible Assets (Excluding Goodwill) [Line Items]
Amortized intangible assets	2,520.4	2,500.7
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	45.9	23.2
IPR&D
Intangible Assets (Excluding Goodwill) [Line Items]
Uamortized intangible assets	123.2	119.8
Regenerative Medicine
Intangible Assets (Excluding Goodwill) [Line Items]
Other intangible assets, net	681.6	691.5
Specialty Pharmaceuticals
Intangible Assets (Excluding Goodwill) [Line Items]
Other intangible assets, net	1,357.8	1,348.3
Human Genetic Therapies
Intangible Assets (Excluding Goodwill) [Line Items]
Other intangible assets, net	$ 449.6	$ 453.2