Goodwill and Intangibles - Components of Intangible Assets Other Than Goodwill (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Carrying Amount, Gross	$ 3,246.6	$ 3,205.3
Accumulated Amortization	(813.2)	(629.7)
Carrying Amount, Net	2,433.4	2,575.6
Other intangibles
Carrying Amount, Gross	3,266.2	3,302.5
Accumulated Amortization	(813.2)	(629.7)
Carrying Amount, Net	2,453.0	2,672.8
Acquired in-process research and development
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	19.6	97.2
Marketed products
Finite-Lived Intangible Assets [Line Items]
Carrying Amount, Gross	3,193.5	3,151.2
Accumulated Amortization	(779.2)	(599.8)
Carrying Amount, Net	2,414.3	2,551.4
Other intangibles
Accumulated Amortization	(779.2)	(599.8)
Other
Finite-Lived Intangible Assets [Line Items]
Carrying Amount, Gross	53.1	54.1
Accumulated Amortization	(34.0)	(29.9)
Carrying Amount, Net	19.1	24.2
Other intangibles
Accumulated Amortization	$ (34.0)	$ (29.9)

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

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Amount before accumulated amortization of intangible assets, excluding goodwill.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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