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Investment Securities (Investments In Private Equity Funds Subject to Lock-Up Periods) (Details) - Private equity security $ in Millions | Jun. 30, 2020 USD ($)
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Debt and Equity Securities, FV-NI [Line Items] |
Fair Value | $ 105.9
1-3 years |
Debt and Equity Securities, FV-NI [Line Items] |
Fair Value | 4.7
3-5 years |
Debt and Equity Securities, FV-NI [Line Items] |
Fair Value | 40.4
5-10 years |
Debt and Equity Securities, FV-NI [Line Items] |
Fair Value | 56.7
Greater than 10 years |
Debt and Equity Securities, FV-NI [Line Items] |
Fair Value | $ 4.1

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