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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
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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