Goodwill and Other Intangibles (Intangibles) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Finite-lived intangible assets:
Carrying Amount, Gross	$ 5,413.3	$ 7,853.2
Accumulated Amortization	(1,911.9)	(3,921.2)
Carrying Amount, Net	3,501.4	3,932.0
Indefinite-lived intangible assets:	19.6	97.2
Other Intangibles, gross	5,432.9	7,950.4
Other intangibles, net	3,521.0	4,029.2
Amortization expense	558.7	683.4	$ 687.9
Marketed products
Finite-lived intangible assets:
Carrying Amount, Gross	5,270.7	7,682.0
Accumulated Amortization	(1,848.2)	(3,851.1)
Carrying Amount, Net	3,422.5	3,830.9
Other
Finite-lived intangible assets:
Carrying Amount, Gross	142.6	171.2
Accumulated Amortization	(63.7)	(70.1)
Carrying Amount, Net	$ 78.9	$ 101.1

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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