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Business Combinations, Acquisitions, and Business Disposals - Narrative (Details) - USD ($) $ in Millions |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 01, 2025 | Jul. 31, 2025 | Apr. 03, 2023 | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Business Combination, Separately Recognized Transaction [Line Items] |  |  |  |  |  |
GAAP purchase consideration, net of cash acquired |  |  |  | $ 661.9 | $ 1.0 | $ 31.4
Proceeds from business disposal |  |  |  | 0.0 | 2.5 | $ 1.0
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Biodex Rehabilitation Business |  |  |  |  |  |
Business Combination, Separately Recognized Transaction [Line Items] |  |  |  |  |  |
Proceeds from business disposal |  |  | $ 1.0 |  |  |
Consideration receivable |  |  |  |  | $ 1.2 |
Certrec |  |  |  |  |  |
Business Combination, Separately Recognized Transaction [Line Items] |  |  |  |  |  |
Purchase consideration |  | $ 82.9 |  |  |  |
GAAP purchase consideration, net of cash acquired |  | 80.6 |  |  |  |
Transaction costs |  |  |  | 0.0 |  |
Certrec | Nuclear & Safety |  |  |  |  |  |
Business Combination, Separately Recognized Transaction [Line Items] |  |  |  |  |  |
Percentage of voting shares (as a percent) | 100.00% |  |  |  |  |
Purchase consideration |  | 82.9 |  |  |  |
GAAP purchase consideration, net of cash acquired |  | $ 80.6 |  |  |  |
Paragon |  |  |  |  |  |
Business Combination, Separately Recognized Transaction [Line Items] |  |  |  |  |  |
Purchase consideration | $ 588.4 |  |  |  |  |
GAAP purchase consideration, net of cash acquired | $ 581.3 |  |  |  |  |
Transaction costs |  |  |  | $ 14.1 |  |
Paragon | Nuclear & Safety |  |  |  |  |  |
Business Combination, Separately Recognized Transaction [Line Items] |  |  |  |  |  |
Percentage of voting shares (as a percent) | 100.00% |  |  |  |  |
Purchase consideration | $ 588.4 |  |  |  |  |
GAAP purchase consideration, net of cash acquired | $ 581.3 |  |  |  |  |

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