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Restructuring - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024 | Dec. 31, 2023
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring charges | $ 0 | $ 0 | $ 82,296 | $ 45,789 |  |
Severance costs |  |  | 75,600 | 31,700 | $ 74,500 |
Other restructuring costs |  |  | 6,700 | 14,100 |  |
Impairment of operating right-of-use assets and related property, plant and equipment |  |  | 5,573 | 12,559 |  |
Restructuring reserve | 21,375 |  | 21,375 |  | 31,474 | $ 6,999
Workforce reduction and onerous contract cost |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Impairment of operating right-of-use assets and related property, plant and equipment |  |  | 5,600 | 12,600 |  |
Onerous contract provision |  |  | 1,100 | $ 1,500 | 1,900 |
Personnel related liabilities |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring reserve | 17,400 |  | 17,400 |  | 27,700 |
Facility liability |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring reserve | 4,000 |  | 4,000 |  | 3,800 |
Restructuring reserve, current | 1,400 |  | 1,400 |  | 1,400 |
Restructuring reserve, noncurrent | $ 2,600 |  | $ 2,600 |  | $ 2,400 |

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