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Restructuring, Business Transformation and Other Cost Saving Initiatives - FIt for Growth Initiative (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | $ 35.3 | $ 11.5
2023 Cost Saving Initiatives |  |
Restructuring Cost and Reserve [Line Items] |  |
Severance Costs | 35.3 | 9.3
Accelerated Depreciation and Other Costs | 1.2 | 6.3
Restructuring charges | 36.5 | 15.6
Reata Integration |  |
Restructuring Cost and Reserve [Line Items] |  |
Severance Costs | (0.2) | 2.2
Accelerated Depreciation and Other Costs | 4.1 | 4.5
Restructuring charges | 3.9 | 6.7
Selling, general and administrative | 2023 Cost Saving Initiatives |  |
Restructuring Cost and Reserve [Line Items] |  |
Severance Costs | 0.0 | 0.0
Accelerated Depreciation and Other Costs | (3.9) | 1.4
Restructuring charges | (3.9) | 1.4
Selling, general and administrative | Reata Integration |  |
Restructuring Cost and Reserve [Line Items] |  |
Severance Costs | 0.0 | 0.0
Accelerated Depreciation and Other Costs | 1.8 | 1.8
Restructuring charges | 1.8 | 1.8
Research and development | 2023 Cost Saving Initiatives |  |
Restructuring Cost and Reserve [Line Items] |  |
Severance Costs | 0.0 | 0.0
Accelerated Depreciation and Other Costs | 5.1 | 4.9
Restructuring charges | 5.1 | 4.9
Research and development | Reata Integration |  |
Restructuring Cost and Reserve [Line Items] |  |
Severance Costs | 0.0 | 0.0
Accelerated Depreciation and Other Costs | 2.3 | 2.7
Restructuring charges | 2.3 | 2.7
Restructuring charges | 2023 Cost Saving Initiatives |  |
Restructuring Cost and Reserve [Line Items] |  |
Severance Costs | 35.3 | 9.3
Accelerated Depreciation and Other Costs | 0.0 | 0.0
Restructuring charges | 35.3 | 9.3
Restructuring charges | Reata Integration |  |
Restructuring Cost and Reserve [Line Items] |  |
Severance Costs | (0.2) | 2.2
Accelerated Depreciation and Other Costs | 0.0 | 0.0
Restructuring charges | $ (0.2) | $ 2.2

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