Intangible Assets and Goodwill - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024	Jul. 02, 2024	Sep. 30, 2023
Goodwill [Line Items]
Amortization and impairment of acquired intangible assets	$ 111,800,000	$ 78,300,000
Impairment of intangible assets		$ 0
Accumulated impairment losses related to goodwill	$ 0
Minimum
Goodwill [Line Items]
Estimated life (in years)	2 years
Maximum
Goodwill [Line Items]
Estimated life (in years)	31 years
Acquired and in-licensed rights and patents
Goodwill [Line Items]
Weighted-Average remaining useful life	12 years
Reata Pharmaceuticals, Inc | Priority review voucher
Goodwill [Line Items]
Intangible assets:					$ 100,000,000
Human Immunology Biosciences
Goodwill [Line Items]
Intangible assets:				$ 1,600,000,000
Human Immunology Biosciences | In-process research and development
Goodwill [Line Items]
Intangible assets:	$ 1,600,000,000		$ 1,600,000,000