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Investments in Unconsolidated Affiliates - Summary of Investments in Unconsolidated Affiliates Not Accounted for Under Equity Method (Details) $ in Millions | Sep. 30, 2021 USD ($)
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Equity Investments With Readily Determinable Fair Value |
Schedule Of Equity Method Investments [Line Items] |
Cost Basis | $ 25.0
Unrealized Gain (Loss) | (4.4)
Fair Value | 20.6
Equity Investments Without Readily Determinable Fair Value |
Schedule Of Equity Method Investments [Line Items] |
Cost Basis | 1.7
Carrying Value | $ 1.7

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