Restructuring - Narrative (Details) $ in Millions		12 Months Ended
	Sep. 26, 2023 USD ($)	Dec. 31, 2023 USD ($) employee
Minimum
Restructuring Cost and Reserve [Line Items]
Expected cost remaining		$ 260.0
Maximum
Restructuring Cost and Reserve [Line Items]
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		$ 153.4
Restructuring charges | 2023 Cost Saving Initiatives
Restructuring Cost and Reserve [Line Items]
Severance Costs		153.4
Reata Pharmaceuticals, Inc
Restructuring Cost and Reserve [Line Items]
Severance Costs		$ 30.4