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Investments in Marketable Securities - Debt Securities, Available-for-Sale (Details) - USD ($) $ in Millions | Sep. 30, 2022 | Dec. 31, 2021
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Schedule of Investments [Line Items] |  |
Cost | $ 113.4 | $ 14.1
Unrealized losses | (3.1) | (0.1)
Fair value | $ 110.3 | $ 14.0

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- Definition Debt Securities, Available-For-Sale And Trading + References No definition available. + Details
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- Definition Debt Securities, Available-For-Sale And Trading, Accumulated Gross Unrealized Loss, Before Tax + References No definition available. + Details
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- Definition Debt Securities, Available-For-Sale And Trading, Amortized Cost + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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