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Pension And Other Post-Retirement Benefits (Narrative) (Details) - USD ($) $ in Millions |  | 3 Months Ended |
--- | --- | --- | ---
Feb. 09, 2022 | Mar. 31, 2022 | Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position |  | $ 29.0 | $ 78.9
Other Post-Retirement Benefits |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Expected required contributions |  | 0.5 |
Pension Benefits |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Contribution to pension plans for continuing operations | $ 50.0 |  |
Accrued Expenses [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Liability, Defined Benefit Plan, Current |  | $ 0.7 |

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