Inventory - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Sep. 26, 2023
Inventory [Line Items]
Net income	$ 583.6	$ 593.3	$ 977.0	$ 980.9
Cost of sales, excluding amortization and impairment of acquired intangible assets	546.0	$ 592.7	1,088.2	$ 1,255.5
Reata Pharmaceuticals, Inc
Inventory [Line Items]
Inventory	1,259.0		1,259.0		$ 1,300.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory Amortization Period					3 years
Reata Pharmaceuticals, Inc | Fair Value Adjustment to Inventory
Inventory [Line Items]
Net income	$ (90.1)		$ (134.2)