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Pension And Other Post-Retirement Benefits (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position | $ 7.2 |  | $ 7.3
Pension settlement loss |  | $ 92.3 |
Other Post-Retirement Benefits |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Expected required contributions | 0.4 |  |
Accrued Expenses [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Liability, Defined Benefit Plan, Current | $ 0.6 |  | $ 0.7

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