Pension and Postretirement Benefits (Expected Contributions to Pension and Postretirement Plans) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2024 USD ($)
Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected contributions in 2024	$ 2.0
Amounts contributed during the nine months ended September 30, 2024	1.3
Postretirement
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected contributions in 2024	1.5
Amounts contributed during the nine months ended September 30, 2024	$ 1.4