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Restructuring, Business Transformation and Other Cost Saving Initiatives - FIt for Growth Initiative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | $ 6.6 | $ 34.4 | $ 18.1 | $ 44.0
2023 Cost Saving Initiatives |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Severance Costs | 6.3 | 17.8 | 15.6 | 24.9
Accelerated Depreciation and Other Costs | 4.2 | 28.5 | 10.5 | 28.5
Restructuring charges | 10.5 | 46.3 | 26.1 | 53.4
Reata Integration |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Severance Costs | 0.3 |  | 2.5 |
Accelerated Depreciation and Other Costs | 4.8 |  | 9.3 |
Restructuring charges | 5.1 |  | 11.8 |
Selling, general and administrative | 2023 Cost Saving Initiatives |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Severance Costs | 0.0 | 0.0 | 0.0 | 0.0
Accelerated Depreciation and Other Costs | 2.0 | 11.5 | 3.4 | 11.5
Restructuring charges | 2.0 | 11.5 | 3.4 | 11.5
Selling, general and administrative | Reata Integration |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Severance Costs | 0.0 |  | 0.0 |
Accelerated Depreciation and Other Costs | 1.5 |  | 3.3 |
Restructuring charges | 1.5 |  | 3.3 |
Research and development | 2023 Cost Saving Initiatives |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Severance Costs | 0.0 | 0.0 | 0.0 | 0.0
Accelerated Depreciation and Other Costs | 2.2 | 0.5 | 7.1 | 0.5
Restructuring charges | 2.2 | 0.5 | 7.1 | 0.5
Research and development | Reata Integration |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Severance Costs | 0.0 |  | 0.0 |
Accelerated Depreciation and Other Costs | 3.3 |  | 6.0 |
Restructuring charges | 3.3 |  | 6.0 |
Restructuring charges | 2023 Cost Saving Initiatives |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Severance Costs | 6.3 | 17.8 | 15.6 | 24.9
Accelerated Depreciation and Other Costs | 0.0 | 16.5 | 0.0 | 16.5
Restructuring charges | 6.3 | $ 34.3 | 15.6 | $ 41.4
Restructuring charges | Reata Integration |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Severance Costs | 0.3 |  | 2.5 |
Accelerated Depreciation and Other Costs | 0.0 |  | 0.0 |
Restructuring charges | $ 0.3 |  | $ 2.5 |

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