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Pension and Postretirement Health and Life Benefits (Schedule of Assumptions Used) (Details)
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Pension Plan, Defined Benefit [Member]      
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate 5.50% 2.80% 2.50%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets 5.50% 6.30% 6.40%
Other Postretirement Benefits Plan [Member]      
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate 5.50% 2.80% 2.50%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets 0.80%