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Investment Securities (Restrictions on Redemption Frequency and Advance Notice Requirements) (Details) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2019 USD ($) fund | Dec. 31, 2018 USD ($)
Hedge funds |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Number of investments | fund | 1 |
Hedge funds | Hedge funds |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Fair Value | $ 54.8 | $ 54.3
Investment redemption, notice period | 45 days |
Hedge funds | Hedge Fund, Long/ Short Equity Banks and Financial |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Fair Value | $ 54.8 | $ 54.3

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- Definition Notice period the entity is required to deliver before it can redeem an investment calculated using net asset value per share, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but is not limited to, investments calculated by per unit, per membership interest, other equity or ownership interest and alternative investments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 6A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=99377789&loc=SL6742756-110258 + 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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- Details
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- Details
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