v3.25.4
Pension and Postretirement Health and Life Benefits (Plan Asset Allocations) (Details)
Dec. 31, 2026
Dec. 31, 2025
Dec. 31, 2024
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage   100.00% 100.00%
Equity Securities [Member]      
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage   19.00% 19.00%
Equity Securities [Member] | Scenario, Forecast [Member] | Minimum [Member]      
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage 10.00%    
Equity Securities [Member] | Scenario, Forecast [Member] | Maximum [Member]      
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage 20.00%    
Debt Securities [Member]      
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage   80.00% 80.00%
Debt Securities [Member] | Scenario, Forecast [Member] | Minimum [Member]      
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage 80.00%    
Debt Securities [Member] | Scenario, Forecast [Member] | Maximum [Member]      
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage 90.00%    
Cash [Member]      
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage   1.00% 1.00%
Cash [Member] | Scenario, Forecast [Member] | Minimum [Member]      
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage 0.00%    
Cash [Member] | Scenario, Forecast [Member] | Maximum [Member]      
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage 5.00%