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Investment Securities - Investments In Private Equity Funds Subject to Lock-Up Periods (Details) - Private equity funds $ in Millions | Mar. 31, 2022 USD ($)
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Debt and Equity Securities, FV-NI [Line Items] |
Fair Value | $ 195.8
1 – 3 years |
Debt and Equity Securities, FV-NI [Line Items] |
Fair Value | 0.1
3 – 5 years |
Debt and Equity Securities, FV-NI [Line Items] |
Fair Value | 48.7
5 – 10 years |
Debt and Equity Securities, FV-NI [Line Items] |
Fair Value | 137.0
Greater than 10 years |
Debt and Equity Securities, FV-NI [Line Items] |
Fair Value | $ 10.0

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