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Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | The following table shows changes in the carrying amount of goodwill by reportable segment as of December 31, 2025, December 31, 2024, and December 31, 2023 (in millions):
| Medical |  | Nuclear & Safety |  | Consolidated
Balance—December 31, 2023 | $ | 633.4 |  |  | $ | 814.2 |  |  | $ | 1,447.6 |
Measurement period adjustment | 1.3 |  |  | — |  |  | 1.3 |
Translation adjustment | — |  |  | (22.0) |  |  | (22.0) |
Other | (0.7) |  |  | — |  |  | (0.7) |
Balance—December 31, 2024 | 634.0 |  |  | 792.2 |  |  | 1,426.2 |
Acquisition of Certrec | — |  |  | 55.7 |  |  | 55.7 |
Acquisition of Paragon | — |  |  | 343.7 |  |  | 343.7 |
Translation adjustment | — |  |  | 46.8 |  |  | 46.8 |
Balance—December 31, 2025 | $ | 634.0 |  |  | $ | 1,238.4 |  |  | $ | 1,872.4 |
Gross carrying amounts and cumulative goodwill impairment losses are as follows (in millions):
| December 31, 2025 |  | December 31, 2024
| Gross Carrying Amount |  | Cumulative Impairment |  | Gross Carrying Amount |  | Cumulative Impairment
Goodwill | $ | 2,084.2 |  |  | $ | (211.8) |  |  | $ | 1,638.0 |  |  | $ | (211.8) |
Schedule of Finite-Lived Intangible Assets | A summary of intangible assets useful lives, gross carrying value and related accumulated amortization is below (in millions):
|  |  | December 31, 2025
| Original Average Life in Years |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Book Value
Customer relationships | 6 - 13 |  | $ | 524.6 |  |  | $ | (240.5) |  |  | $ | 284.1 |
Distributor relationships | 7 - 13 |  | 61.2 |  |  | (30.6) |  |  | 30.6 |
Developed technology | 5 - 16 |  | 345.0 |  |  | (140.1) |  |  | 204.9 |
Trade names | 3 - 10 |  | 115.8 |  |  | (43.1) |  |  | 72.7 |
Remaining performance obligations and other | 1 - 4 |  | 15.1 |  |  | (1.1) |  |  | 14.0 |
Total |  |  | $ | 1,061.7 |  |  | $ | (455.4) |  |  | $ | 606.3 |
|  |  | December 31, 2024
| Original Average Life in Years |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Book Value
Customer relationships | 6 - 13 |  | $ | 335.6 |  |  | $ | (190.9) |  |  | $ | 144.7 |
Distributor relationships | 7 - 13 |  | 60.8 |  |  | (23.2) |  |  | 37.6 |
Developed technology | 5 - 16 |  | 258.7 |  |  | (100.2) |  |  | 158.5 |
Trade names | 3 - 10 |  | 97.8 |  |  | (31.5) |  |  | 66.3 |
Remaining performance obligations and other | 1 - 4 |  | 23.3 |  |  | (18.8) |  |  | 4.5 |
Total |  |  | $ | 776.2 |  |  | $ | (364.6) |  |  | $ | 411.6 |
Schedule of Finite-lived Intangible Assets Amortization Expense | Aggregate amortization expense for intangible assets included in cost of revenues and operating expenses was as follows (in millions):
| Fiscal Year Ended December 31, 2025 |  | Fiscal Year Ended December 31, 2024 |  | Fiscal Year Ended December 31, 2023
Amortization expense for intangible assets in: |  |  |  |  |
Cost of revenues | $ | 27.6 |  |  | $ | 27.0 |  |  | $ | 27.1 |
Operating expenses | $ | 74.8 |  |  | $ | 91.5 |  |  | $ | 104.2 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense | Estimated future annual amortization expense is as follows (in millions):
Fiscal year ending December 31: |
2026 | $ | 118.0 |
2027 | 103.2 |
2028 | 85.4 |
2029 | 69.1 |
2030 | 61.5 |
2031 and thereafter | 169.1 |
Total | $ | 606.3 |

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