v3.26.3
Pension And Other Postretirement Benefits (Narrative) (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Postemployment Benefits [Abstract]        
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Remeasurement due to Settlement     $ 4.7  
Pension Plan        
Defined Benefit Plan Disclosure [Line Items]        
Employer contributions     3,100,000 $ 1,500,000
Postemployment Benefits [Abstract]        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement $ (4,700,000) $ (5,600,000) (4,700,000) (5,600,000)
Defined Benefit Plan, Expected Return (Loss) on Plan Assets 22,500,000 23,100,000 67,500,000 69,300,000
Other Postretirement Benefit Plan        
Defined Benefit Plan Disclosure [Line Items]        
Employer contributions     15,100,000 15,400,000
Postemployment Benefits [Abstract]        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement 0 0 0  
Defined Benefit Plan, Expected Return (Loss) on Plan Assets $ 4,100,000 $ 4,200,000 $ 12,400,000 $ 12,600,000