Defined Benefit Pension Plan

Three Months Ended

Nine Months Ended

September 30,

2026

2025

2026

2025

Service cost

$

3.5

$

4.0

$

10.6

$

11.4

Interest cost

5.5

5.2

16.8

14.9

Expected return on assets

(5.2

)

(5.4

)

(15.8

)

(15.4

)

Net (gain) loss

(0.2

)

—

(0.5

)

0.2

Prior service cost

0.2

0.2

0.5

0.5

Total benefit cost

$

3.8

$

4.0

$

11.6

$

11.6

Retiree Health Care Plan

Three Months Ended

Nine Months Ended

September 30,

2026

2025

2026

2025

Interest cost

$

0.1

$

0.1

$

0.3

$

0.3

Prior service credit

(0.2

)

(0.2

)

(0.6

)

(0.6

)

Total benefit credit

$

(0.1

)

$

(0.1

)

$

(0.3

)

$

(0.3

)