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Pension And Other Post-Retirement Benefits (Narrative) (Details) - USD ($) $ in Millions | 6 Months Ended |
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Jun. 30, 2021 | Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items] |  |
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position | $ (105.9) | $ (111.3)
Other Post-Retirement Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Contribution to pension plans for continuing operations | 0.5 |
Pension Benefits |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Expected required contributions | 11.7 |
Contribution to pension plans for continuing operations | 3.8 |
Accrued Expenses [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Liability, Defined Benefit Plan, Current | $ 0.7 |

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- Definition Amount of asset (liability), recognized in statement of financial position, for defined benefit pension and other postretirement plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109237824&loc=d3e1703-114919 + Details
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