Goodwill and Other Intangibles - Schedule of Finite-lived and Indefinite-lived Intangible Assets other than Goodwill (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Finite-lived intangible assets:
Accumulated Amortization	$ (2,821.6)	$ (2,277.0)
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Carrying Amount, Gross	8,987.9	9,183.6
Accumulated Amortization	(2,821.6)	(2,277.0)
Carrying Amount, Net	6,166.3	6,906.6
Acquired IPR&D
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	897.7	966.8
Marketed products
Finite-lived intangible assets:
Carrying Amount, Gross	8,090.2	8,216.8
Accumulated Amortization	(2,821.6)	(2,277.0)
Carrying Amount, Net	5,268.6	5,939.8
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Accumulated Amortization	$ (2,821.6)	$ (2,277.0)