Intangible Assets and Goodwill - Changes in Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Goodwill [Roll Forward]
Goodwill, January 1	$ 6,219.2	$ 5,749.0
Other	(1.5)	5.7
Goodwill, December 31	6,478.9	6,219.2
Hi-Bio Acquisition
Goodwill [Roll Forward]
Goodwill, resulting from acquisition	256.5	0.0
Reata Pharmaceuticals, Inc
Goodwill [Roll Forward]
Goodwill, resulting from acquisition	4.7	$ 464.5
Goodwill, December 31	$ 469.2