Intangible Assets and Goodwill - Summary of Intangible Assets (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets, Net [Abstract]
Finite-Lived Intangible Assets, Gross	$ 14,138.4	$ 11,728.8
Accumulated Amortization	(6,254.1)	(5,869.8)
Net	7,884.3	5,859.0
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Cost	15,945.3	14,232.8
Accumulated Amortization	6,254.1	5,869.8
Net	9,691.2	8,363.0
In-process research and development
Indefinite-Lived Intangible Assets [Line Items]
Cost and net	1,642.9	2,340.0
Priority review voucher
Indefinite-Lived Intangible Assets [Line Items]
Cost and net	100.0	100.0
Trademarks and trade names
Indefinite-Lived Intangible Assets [Line Items]
Cost and net	$ 64.0	$ 64.0
Developed technology and other | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated life (in years)	1 year
Developed technology and other | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated life (in years)	31 years