Restructuring, Business Transformation and Other Cost Saving Initiatives - Narrative (Details) $ in Millions		3 Months Ended		6 Months Ended
	Sep. 26, 2023 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) Employee	Jun. 30, 2023 USD ($)	Jul. 31, 2023 USD ($)
Minimum
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Remaining						$ 260.0
Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Remaining						$ 280.0
2023 Cost Saving Initiatives
Restructuring Cost and Reserve [Line Items]
Expected operating expense reduction	$ 1,000.0
Expected number of positions eliminated | Employee				1,000
Severance Costs		$ 6.3	$ 17.8	$ 15.6	$ 24.9
2023 Cost Saving Initiatives | Restructuring charges
Restructuring Cost and Reserve [Line Items]
Severance Costs		6.3	$ 17.8	15.6	$ 24.9
Reata Integration
Restructuring Cost and Reserve [Line Items]
Severance Costs		0.3		2.5
Reata Integration | Minimum
Restructuring Cost and Reserve [Line Items]
Expected cost		35.0		35.0
Reata Integration | Maximum
Restructuring Cost and Reserve [Line Items]
Expected cost		40.0		40.0
Reata Integration | Restructuring charges
Restructuring Cost and Reserve [Line Items]
Severance Costs		$ 0.3		$ 2.5