Revenues - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2025 USD ($) wholesaler	Mar. 31, 2024 USD ($) wholesaler
Disaggregation of Revenue [Line Items]
Number of wholesalers | wholesaler	2	2
Total revenue	$ 2,431.0	$ 2,290.5
Distributor One
Disaggregation of Revenue [Line Items]
Percentage of revenues from major distributors	25.90%	25.60%
Distributor Two
Disaggregation of Revenue [Line Items]
Percentage of revenues from major distributors	14.10%	11.70%
Contract manufacturing, royalty and other revenue
Disaggregation of Revenue [Line Items]
Total revenue	$ 293.3	$ 181.8
Alzheimer's collaboration revenue
Disaggregation of Revenue [Line Items]
Total revenue	$ 33.0	2.8
Share of non-controling interest recognized	50.00%
Alzheimer's Collaboration
Disaggregation of Revenue [Line Items]
Total revenue	$ 33.0	$ 2.8