Property, Plant and Equipment (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Property, Plant and Equipment (Textual) [Abstract]
Accumulated depreciation on property, plant and equipment	$ 854.7		$ 854.7		$ 782.1
Hillerod, Denmark Facility [Member]
Property, Plant and Equipment [Line Items]
Construction in progress balance related to biologic manufacturing facility	487.4		487.4		474.0
Interest cost capitalization related to large-scale biologic manufacturing facility	8.6	8.3	16.8	15.9
Cambridge Leases [Member]
Property, Plant and Equipment [Line Items]
Construction cost incurred not yet paid	38.8		38.8		2.2
Expected charges to vacate building			$ 35.0