Goodwill and Intangible Assets (Components of Intangible Assets) (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
		Mar. 31, 2016	Dec. 31, 2015
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, original cost		$ 9,820.9	$ 9,430.5
Finite-lived intangible assets, accumulated amortization		3,280.7	2,946.3
Finite-lived intangible assets, net book value		6,540.2	6,484.2
In-process research and development		738.2	737.7
Intangible assets, gross, excluding goodwill		10,559.1	10,168.2
Intangible assets, net book value, excluding goodwill		$ 7,278.4	$ 7,221.9
Product rights and licenses
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, estimated useful life, in years		11 years	11 years
Finite-lived intangible assets, original cost		$ 9,219.9	$ 8,848.6
Finite-lived intangible assets, accumulated amortization		2,947.2	2,652.7
Finite-lived intangible assets, net book value		$ 6,272.7	$ 6,195.9
Patents and technologies
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, estimated useful life, in years		20 years	20 years
Finite-lived intangible assets, original cost		$ 116.6	$ 116.6
Finite-lived intangible assets, accumulated amortization		105.0	103.8
Finite-lived intangible assets, net book value		$ 11.6	$ 12.8
Other
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, estimated useful life, in years		6 years	6 years
Finite-lived intangible assets, original cost	[1]	$ 484.4	$ 465.3
Finite-lived intangible assets, accumulated amortization	[1]	228.5	189.8
Finite-lived intangible assets, net book value	[1]	$ 255.9	$ 275.5

[1] Other intangible assets consist principally of customer lists, contractual rights and other contracts.