v3.26.1
Pension Plans (Components of Net Periodic Pension Cost) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Retirement Benefits [Abstract]        
Interest cost $ 4.8 $ 5.1 $ 9.5 $ 10.2
Defined Benefit Plan, Type [Extensible List] us-gaap:PensionPlansDefinedBenefitMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:PensionPlansDefinedBenefitMember us-gaap:PensionPlansDefinedBenefitMember
Expected return on plan assets $ (4.6) $ (4.8) $ (9.2) $ (9.5)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Other Cost and Expense, Operating Other Cost and Expense, Operating Other Cost and Expense, Operating Other Cost and Expense, Operating
Recognized net actuarial loss $ 1.6 $ 1.7 $ 3.3 $ 3.3
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Other Cost and Expense, Operating Other Cost and Expense, Operating Other Cost and Expense, Operating Other Cost and Expense, Operating
Net periodic pension cost $ 1.8 $ 2.0 $ 3.6 $ 4.0