Retirement Plans And Other Postretirement Benefits (Schedule Of Percentage Composition Of Assets Held By Pension Plans) (Details)	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
% Composition of Plan Assets at December 31, Total for continuing operations	100.00%
Fixed income mutual fund
Defined Benefit Plan Disclosure [Line Items]
% Composition of Plan Assets at December 31, Total for continuing operations	13.90%
Collective investment trust
Defined Benefit Plan Disclosure [Line Items]
% Composition of Plan Assets at December 31, Total for continuing operations	69.90%
Private equity and hedge funds
Defined Benefit Plan Disclosure [Line Items]
% Composition of Plan Assets at December 31, Total for continuing operations	4.80%
Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
% Composition of Plan Assets at December 31, Total for continuing operations	11.40%