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Retirement Plans And Other Postretirement Benefits (Schedule Of Percentage Composition Of Assets Held By Pension Plans) (Details)
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
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 [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
% Composition of Plan Assets at December 31, Total for continuing operations 14.70% 9.70% 1.90%
Large/Mid-Capitalization Equity Securities [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
% Composition of Plan Assets at December 31, Total for continuing operations 10.90% 15.90% 22.30%
Small-Capitalization Equity Securities [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
% Composition of Plan Assets at December 31, Total for continuing operations 5.40% 6.20% 6.70%
International And Emerging Market Equity Securities [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
% Composition of Plan Assets at December 31, Total for continuing operations 10.00% 14.30% 21.60%
Total Equity Securities [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
% Composition of Plan Assets at December 31, Total for continuing operations 26.30% 36.40% 50.60%
Private Equity And Hedge Funds [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
% Composition of Plan Assets at December 31, Total for continuing operations 50.00% 41.80% 42.70%
Other Assets [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
% Composition of Plan Assets at December 31, Total for continuing operations 9.00% 12.10% 4.80%