v3.25.1
Pension and Other Post-Retirement Benefits (Tables)
3 Months Ended
Mar. 31, 2025
Retirement Benefits [Abstract]  
Components of pension and other post retirement benefit costs
The following table shows the components of net periodic cost for the three months ended March 31, 2025 and 2024 (in millions):

 
 
 
 
2025
Pension
Benefits
2024
Pension
Benefits
2025
Retiree
Health and Life
2024
Retiree
Health and Life
Service cost
$1.4 $1.4 $— $— 
Interest cost
4.2 4.0 0.2 0.2 
Expected return on plan assets
(5.5)(5.4)— — 
Amortization of (1):
Unrecognized prior service credit
— — — (0.1)
Unrecognized net actuarial loss (gain)
0.2 0.2 (0.2)(0.1)
Net periodic cost
$0.3 $0.2 $— $— 
_________
(1)    Amounts reclassified from accumulated other comprehensive loss.