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Fair Value Measurements (Summary Of Quantitative Information About Level 3 Fair Value Measurements) (Details) - Private Equity Investments [Member] | 3 Months Ended
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Mar. 31, 2026
Fair Value Assets Measured on Recurring Basis [Line Items] |  |
Valuation Technique | Market comparable companies |
Minimum [Member] |  |
Fair Value Assets Measured on Recurring Basis [Line Items] |  |
EBITDA multiple | 4.0 |
Maximum [Member] |  |
Fair Value Assets Measured on Recurring Basis [Line Items] |  |
EBITDA multiple | 6.0 |
Weighted Average [Member] |  |
Fair Value Assets Measured on Recurring Basis [Line Items] |  |
EBITDA multiple | 5.1 | [1]
[1] | * Unobservable inputs were weighted by the relative fair value of the instruments.

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