XML 53 R42.htm IDEA: XBRL DOCUMENT v3.25.1
Pension and other Postretirement Benefits - Narrative (Schedule of Net Benefit Costs) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Retirement Benefits [Abstract]    
Defined Benefit Plan, Interest Cost $ 7.6 $ 7.4
Defined Benefit Plan, Expected Return (Loss) on Plan Assets (7.2) (7.9)
Defined Benefit Plan, Amortization of Gain (Loss) 0.2 0.2
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) $ 0.2 $ (0.7)