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Investments - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021
Investments, Debt and Equity Securities [Abstract] |  |
Unrealized gain (loss), net of other expenses | $ (0.5) | $ 0.4

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- References No definition available. + Details
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- Definition Amount of unrealized holding gain (loss) recognized in the income statement for investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading. + References No definition available. + Details
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