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Pension and Postretirement Benefits (Expected Contributions to Pension and Postretirement Plans) (Details)
$ in Millions
6 Months Ended
Jun. 30, 2025
USD ($)
Pension  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Expected contributions in 2025 $ 1.6
Amounts contributed during the six months ended June 30, 2025 0.5
Postretirement  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Expected contributions in 2025 1.3
Amounts contributed during the six months ended June 30, 2025 $ 1.1