Acquisition-related Intangible Assets (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Definite-Lived Intangible Assets [Line Items]
Definite-Lived Intangible Assets, Gross	$ 24,853.9	$ 20,332.2
Accumulated Amortization	(9,099.4)	(7,704.6)
Definite-Lived Intangible Assets, Net	15,754.5	12,627.6
Indefinite-Lived Intangible Assets	1,275.1	1,341.4
Acquisition-related Intangible Assets, Gross	26,129.0	21,673.6
Acquisition-related Intangible Assets, net of Accumulated Amortization	17,029.6	13,969.0
Tradenames [Member]
Definite-Lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	1,234.8	1,234.8
In-Process Research and Development [Member]
Definite-Lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	40.3	106.6
Customer Relationships [Member]
Definite-Lived Intangible Assets [Line Items]
Definite-Lived Intangible Assets, Gross	17,288.4	13,167.3
Accumulated Amortization	(5,614.4)	(4,821.4)
Definite-Lived Intangible Assets, Net	11,674.0	8,345.9
Product Technology [Member]
Definite-Lived Intangible Assets [Line Items]
Definite-Lived Intangible Assets, Gross	5,999.6	5,679.7
Accumulated Amortization	(2,676.1)	(2,204.2)
Definite-Lived Intangible Assets, Net	3,323.5	3,475.5
Tradenames [Member]
Definite-Lived Intangible Assets [Line Items]
Definite-Lived Intangible Assets, Gross	1,531.5	1,452.2
Accumulated Amortization	(774.6)	(646.0)
Definite-Lived Intangible Assets, Net	756.9	806.2
Other Intangible Assets [Member]
Definite-Lived Intangible Assets [Line Items]
Definite-Lived Intangible Assets, Gross	34.4	33.0
Accumulated Amortization	(34.3)	(33.0)
Definite-Lived Intangible Assets, Net	$ 0.1	$ 0.0