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Retirement Plans And Other Postretirement Benefits (Schedule Of Percentage Composition Of Assets Held By Pension Plans) (Details) | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
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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 | 8.70% | 8.60% | 7.70%
Large/mid-capitalization equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
% Composition of Plan Assets at December 31, Total for continuing operations | 21.30% | 18.20% | 19.00%
Small-capitalization equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
% Composition of Plan Assets at December 31, Total for continuing operations | 7.80% | 6.80% | 6.40%
International and emerging market equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
% Composition of Plan Assets at December 31, Total for continuing operations | 19.70% | 16.00% | 15.10%
Total equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
% Composition of Plan Assets at December 31, Total for continuing operations | 48.80% | 41.00% | 40.50%
Private equity and hedge funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
% Composition of Plan Assets at December 31, Total for continuing operations | 35.00% | 42.30% | 44.60%
Other assets |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
% Composition of Plan Assets at December 31, Total for continuing operations | 7.50% | 8.10% | 7.20%

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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 http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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