Goodwill and Intangible Assets (Components of Intangible Assets) (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Intangible Assets by Major Class [Line Items]
Intangible asset disposal & impairment charges	$ 0.0	$ 0.0		$ 102.0	$ 0.0
Finite-lived intangible assets, original cost	34,275.2			34,275.2		$ 34,178.1
Finite-lived intangible assets, accumulated amortization	17,187.9			17,187.9		15,316.4
Finite-lived intangible assets, net book value	17,087.3			17,087.3		18,861.7
In-process research and development	891.6			891.6		319.4
Intangible assets, gross, excluding goodwill	35,166.8			35,166.8		34,497.5
Intangible assets, net book value, excluding goodwill	$ 17,978.9			$ 17,978.9		$ 19,181.1
Patents and technologies
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, estimated useful life, in years	13 years			13 years		13 years
Licensing Agreements
Intangible Assets by Major Class [Line Items]
Write down of intangible assets		$ 32.0	$ 172.9		$ 32.0