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Fair Value Measurement and Fair Value of Financial Instruments - Narrative (Details) - USD ($) $ in Millions | Sep. 30, 2020 | Dec. 31, 2019 | Feb. 25, 2019
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Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |  |
Contingent consideration | $ 300.5 | $ 291.8 |
General Electric Company |  |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |  |
Contingent consideration |  |  | $ 440.0
General Electric Company | (Level 3) | Other Accrued Liabilities |  |  |
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] |  |  |
Contingent consideration | $ 160.0 |  |

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