v3.26.1
Retirement Plans and Postretirement Benefits - (Tables)
3 Months Ended
Mar. 31, 2026
Retirement Benefits [Abstract]  
Components of Net Periodic Cost of Pension and Other Postretirement Employee Benefit Plans
 Quarter Ended March 31,
Pension Benefit Plans20262025
Service cost$0.6 $0.8 
Interest cost2.8 3.0 
Expected return on plan assets(3.0)(3.3)
Amortization of actuarial loss0.9 0.2 
Net periodic cost $1.3 $0.6 

 Quarter Ended March 31,
Other Postretirement Employee Benefit Plans20262025
Service cost$0.1 $— 
Interest cost0.6 0.6 
Amortization of actuarial gain(0.1)(0.1)
Net periodic cost$0.5 $0.5