v3.25.4
Pension and Other Postretirement Benefits (Components Of The Plans' Net Periodic Benefits Cost) (Details) - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]      
Settlement loss $ (1.7)    
Pension Plan      
Defined Benefit Plan Disclosure [Line Items]      
Service Cost 19,700,000 $ 21,900,000 $ 20,500,000
Interest cost 64,100,000 64,900,000 68,400,000
Expected return on assets (92,400,000) (95,300,000) (94,500,000)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) 100,000 100,000 100,000
Recognized actuarial loss 25,500,000 28,600,000 33,700,000
Settlement loss 6,500,000 7,200,000 9,200,000
Total Net Periodic Benefits Cost 23,500,000 27,400,000 37,400,000
Other Postretirement Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Service Cost 4,000,000.0 5,000,000.0 5,100,000
Interest cost 21,600,000 22,000,000.0 21,800,000
Expected return on assets (16,800,000) (16,100,000) (15,100,000)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) (2,600,000) (1,800,000) (2,100,000)
Recognized actuarial loss 1,700,000 3,200,000 3,300,000
Settlement loss 3,500,000 0 0
Total Net Periodic Benefits Cost $ 11,400,000 $ 12,300,000 $ 13,000,000.0