v3.25.1
Pension and Other Post-Retirement Benefits
 3 Months Ended
Mar. 31, 2025
Retirement Benefits [Abstract]  
Pension and Other Post-Retirement Benefits Pension and Other Post-Retirement Benefits
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.

The service cost component of net periodic cost was $1.4 million for the three months ended March 31, 2025, and $1.4 million for the three months ended March 31, 2024 and is recorded in selling, general and administrative expense. The non-service components totaled income of $1.1 million for the three months ended March 31, 2025, and $1.2 million for the three months ended March 31, 2024, and are recorded in other (expense) income in the statements of comprehensive income.