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Fair Value Measurement and Fair Value of Financial Instruments - Narrative (Details) - USD ($) $ in Millions | Sep. 30, 2021 | Dec. 31, 2020
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Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Contingent consideration | $ 219.8 | $ 218.1
General Electric Company | Significant Unobservable Inputs (Level 3) | Other Accrued Liabilities |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |
Contingent consideration | $ 130.0 |

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