Intangible Assets and Goodwill - Changes in Goodwill (Details)	3 Months Ended
	Mar. 31, 2025 USD ($)
Summary of roll forward of the changes in goodwill
Goodwill, beginning of period	$ 6,478,900,000
Other	3,300,000
Goodwill, end of period	6,477,100,000
Accumulated impairment losses related to goodwill	0
Human Immunology Biosciences
Summary of roll forward of the changes in goodwill
Goodwill resulting from HI-Bio acquisition	$ (5,100,000)