Other Intangible Assets, Net (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012
Intangible Assets (Excluding Goodwill) [Line Items]
Amortized intangible assets	$ 4,944.5		$ 2,619.4
Other intangible assets, gross	6,260.1		3,570.9
Less: Accumulated amortization	(1,316.7)		(1,258.3)
Other intangible assets, net	4,943.4	2,657.2	2,312.6	2,388.1
Other Disclosures
Impairment charges	166.0	0
Acquisitions	2,854.0	328.5
Estimates of Annual Amortization
2014	259
2015	259
2016	259
2017	259
2018	259
Currently Marketed Products
Intangible Assets (Excluding Goodwill) [Line Items]
Amortized intangible assets	4,914.5		2,573.3
Currently Marketed Products | Viropharma
Other Disclosures
Acquisitions	2,320.0
Other Intangible Assets
Intangible Assets (Excluding Goodwill) [Line Items]
Amortized intangible assets	30.0		46.1
IPR&D
Intangible Assets (Excluding Goodwill) [Line Items]
Unamortized intangible assets	1,315.6		951.5
IPR&D | Viropharma
Other Disclosures
Acquisitions	530.0
SHP602 IPR&D
Other Disclosures
Impairment charges	$ 166.0