v3.26.1
Retirement Plans
 6 Months Ended
Jun. 30, 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:

 

 

Defined Benefit Pension Plan

 

 

 

Three Months Ended

 

 

Six Months Ended

 

 

 

June 30,

 

 

June 30,

 

 

 

2026

 

 

2025

 

 

2026

 

 

2025

 

Service cost

 

$

3.5

 

 

$

3.8

 

 

$

7.1

 

 

$

7.4

 

Interest cost

 

 

5.6

 

 

 

5.0

 

 

 

11.3

 

 

 

9.7

 

Expected return on assets

 

 

(5.3

)

 

 

(5.2

)

 

 

(10.6

)

 

 

(10.0

)

Net (gain) loss

 

 

(0.1

)

 

 

0.1

 

 

 

(0.3

)

 

 

0.2

 

Prior service cost

 

 

0.2

 

 

 

0.2

 

 

 

0.3

 

 

 

0.3

 

Total benefit cost

 

$

3.9

 

 

$

3.9

 

 

$

7.8

 

 

$

7.6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Retiree Health Care Plan

 

 

 

Three Months Ended

 

 

Six Months Ended

 

 

 

June 30,

 

 

June 30,

 

 

 

2026

 

 

2025

 

 

2026

 

 

2025

 

Interest cost

 

$

0.1

 

 

$

0.1

 

 

$

0.2

 

 

$

0.2

 

Prior service credit

 

 

(0.2

)

 

 

(0.2

)

 

 

(0.4

)

 

 

(0.4

)

Total benefit credit

 

$

(0.1

)

 

$

(0.1

)

 

$

(0.2

)

 

$

(0.2

)

 

During the three and six months ended June 30, 2026, contributions made to our pension plans were $4.5 and $9.0, respectively, and contributions made to our retiree health care plan were $0.2 and $0.5, respectively. During 2026, we expect to make total contributions of approximately $21.0 to our pension plans and to fund our retiree health care payments as incurred.