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Fair Value Measurement (Investments in LLCs and Limited Partnerships Footnote) (Details) | 9 Months Ended
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Sep. 30, 2021 fund
Mortgage fund |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |
Investment redemption notice period | 65 days
Payment period for redemption of LP valued at NAV | 45 days
Secured debt fund |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |
Number of limited partners in investment | 2
Number of limited partners to allow redemption by special consent | 1
Secured debt fund | Minimum |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |
Liquidating investments remaining period | 3 years
Secured debt fund | Maximum |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |
Liquidating investments remaining period | 8 years
Long/short equity funds |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |
Payment period for redemption of LP valued at NAV | 30 days
Redemption percentage of LP at NAV for which initial payment is limited | 90.00%
Non-public equity funds |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |
Liquidating investments remaining period | 10 years
Credit funds | Minimum |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |
Investment redemption notice period | 90 days
Credit funds | Maximum |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |
Investment redemption notice period | 180 days

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- Definition The number of days required for payment upon redemption of a particular LP that is valued at NAV. + References No definition available. + Details
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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=123874694&loc=SL6742756-110258 + Details
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- Definition Remaining period of expected liquidation by investee of underlying asset of investment measured at net asset value per share or unit. In 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 6A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123874694&loc=SL6742756-110258 + Details
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