v3.25.2
Pension and Other Post-Retirement Benefits
 6 Months Ended
Jun. 30, 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 June 30, 2025 and 2024 (in millions):

 
 
 
 		2025
Pension
Benefits		2024
Pension
Benefits		2025
Retiree
Health and Life		2024
Retiree
Health and Life
Service cost
$1.7 $1.6 $0.1 $0.1 
Interest cost
4.3 4.2 0.1 0.1 
Expected return on plan assets
(5.4)(5.4)— — 
Amortization of (1):
Unrecognized prior service credit
— — — — 
Unrecognized net actuarial loss (gain)
0.2 0.3 — (0.2)
Net periodic cost
$0.8 $0.7 $0.2 $— 

The following table shows the components of net periodic cost for the six months ended June 30, 2025 and 2024 (in millions):

 
 
 
 		2025
Pension
Benefits		2024
Pension
Benefits		2025
Retiree
Health and Life		2024
Retiree
Health and Life
Service cost
$3.1 $3.0 $0.1 $0.1 
Interest cost
8.5 8.2 0.3 0.3 
Expected return on plan assets
(10.9)(10.8)— — 
Amortization of (1):
Unrecognized prior service credit
— — — (0.1)
Unrecognized net actuarial loss (gain)
0.4 0.5 (0.2)(0.3)
Net periodic cost
$1.1 $0.9 $0.2 $— 
_________
(1)    Amounts reclassified from accumulated other comprehensive loss.
The service cost component of net periodic cost was $1.8 million and $3.2 million for the three and six months ended June 30, 2025, and $1.7 million and $3.1 million for the three and six months ended June 30, 2024 and is recorded in selling, general and administrative expense.

The non-service components totaled income of $0.8 million and $1.9 million for the three and six months ended June 30, 2025 and $1.0 million and $2.2 million for the three and six months ended June 30, 2024, and are recorded in other expense in the statements of comprehensive income.