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Retirement Plans And Other Postretirement Benefits (Schedule Of Percentage Composition Of Assets Held By Pension Plans) (Details) | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
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Defined Benefit Plan Disclosure [Line Items] |  |  |
% Composition of Plan Assets at December 31, Total for continuing operations | 100.00% | 100.00% | 100.00%
Fixed income securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
% Composition of Plan Assets at December 31, Total for continuing operations | 13.90% | 25.30% | 7.70%
Large/mid-capitalization equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
% Composition of Plan Assets at December 31, Total for continuing operations | 0.00% | 28.10% | 27.10%
Small-capitalization equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
% Composition of Plan Assets at December 31, Total for continuing operations | 0.00% | 6.80% | 8.60%
International and emerging market equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
% Composition of Plan Assets at December 31, Total for continuing operations | 0.00% | 19.90% | 20.60%
Total equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
% Composition of Plan Assets at December 31, Total for continuing operations | 0.00% | 54.80% | 56.30%
Collective Investment Trust |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
% Composition of Plan Assets at December 31, Total for continuing operations | 69.90% | 0.00% | 0.00%
Private equity and hedge funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
% Composition of Plan Assets at December 31, Total for continuing operations | 4.80% | 10.40% | 12.10%
Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
% Composition of Plan Assets at December 31, Total for continuing operations | 11.40% | 2.80% | 17.50%
Other assets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
% Composition of Plan Assets at December 31, Total for continuing operations | 0.00% | 6.70% | 6.40%

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Percentage of actual investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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