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Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Acquisition-related future consideration liabilities | $ 11.9 |
Acquisition-related future consideration liabilities recorded in other current liabilities | 7.5 |
Acquisition-related future consideration liabilities recorded in other long-term liabilities | 4.4 |
Money market |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash and cash equivalents | 161.9 | $ 244.3
Mutual Fund | NAV |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Other financial assets | $ 17.2 | $ 6.9

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