v3.26.1
Retirement Plans
 3 Months Ended
Mar. 31, 2026
Retirement Benefits [Abstract]  
Retirement Plans

(10) Retirement Plans

The components of the net periodic benefit cost (credit) for our retirement plans were as follows:

 

 

Three Months Ended March 31,

 

 

 

Defined Benefit Pension Plans

 

 

Retiree Health Care Plan

 

 

 

2026

 

 

2025

 

 

2026

 

 

2025

 

Service cost

 

$

3.6

 

 

$

3.6

 

 

$

-

 

 

$

-

 

Interest cost

 

 

5.7

 

 

 

4.7

 

 

 

0.1

 

 

 

0.1

 

Expected return on assets

 

 

(5.3

)

 

 

(4.8

)

 

 

-

 

 

 

-

 

Net (gain) loss

 

 

(0.2

)

 

 

0.1

 

 

 

-

 

 

 

-

 

Prior service cost (credit)

 

 

0.1

 

 

 

0.1

 

 

 

(0.2

)

 

 

(0.2

)

Total benefit cost (credit)

 

$

3.9

 

 

$

3.7

 

 

$

(0.1

)

 

$

(0.1

)

During the three months ended March 31, 2026 and 2025, contributions made to our pension plans were $4.5 and $5.5, respectively, and contributions made to our retiree health care plan were $0.3 for both periods. During 2026, we expect to make total contributions of approximately $20.0 to our pension plans and to fund our retiree health care payments as incurred.