Goodwill and Other Intangibles (Schedule of Finite-lived and Indefinite-lived Intangible Assets other than Goodwill) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Finite-lived intangible assets:
Carrying Amount, Gross	$ 3,244.4	$ 2,166.7
Accumulated Amortization	(1,296.4)	(1,098.7)
Carrying Amount, Net	1,948.0	1,068.0
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Carrying Amount, Gross	7,914.4	2,166.7
Accumulated Amortization	(1,296.4)	(1,098.7)
Carrying Amount, Net	6,618.0	1,068.0
Acquired IPR&D
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	4,670.0	0.0
Marketed products
Finite-lived intangible assets:
Carrying Amount, Gross	3,150.2	2,077.2
Accumulated Amortization	(1,244.6)	(1,069.0)
Carrying Amount, Net	1,905.6	1,008.2
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Accumulated Amortization	(1,244.6)	(1,069.0)
Other intangibles
Finite-lived intangible assets:
Carrying Amount, Gross	94.2	89.5
Accumulated Amortization	(51.8)	(29.7)
Carrying Amount, Net	42.4	59.8
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Accumulated Amortization	$ (51.8)	$ (29.7)