v3.24.2
Employee Benefit Plans (Tables)
 6 Months Ended
Jun. 30, 2024
Retirement Benefits [Abstract]  
Components of Net Periodic Cost for Defined Benefit Pension Plan and for Postretirement Benefit Plan

The components of net periodic cost (gain) for our defined benefit pension plan and for our postretirement benefit plan are included in the following tables:

 

 

 

Three Months Ended June 30,

 

 

Six Months Ended June 30,

 

 

 

2024

 

 

2023

 

 

2024

 

 

2023

 

 

 

(In millions)

 

Interest cost

 

$

4.1

 

 

$

4.3

 

 

$

8.2

 

 

$

8.6

 

Actuarial loss amortization

 

 

3.3

 

 

 

2.1

 

 

 

6.6

 

 

 

4.2

 

Less: Expected return on plan assets

 

 

(4.4

)

 

 

(5.6

)

 

 

(8.8

)

 

 

(11.1

)

Net periodic pension cost

 

$

3.0

 

 

$

0.8

 

 

$

6.0

 

 

$

1.7

 

 

 

 

Three Months Ended June 30,

 

 

Six Months Ended June 30,

 

 

 

2024

 

 

2023

 

 

2024

 

 

2023

 

 

 

(In millions)

 

Interest cost

 

$

0.1

 

 

$

0.1

 

 

$

0.2

 

 

$

0.2

 

Actuarial gain amortization

 

 

(0.6

)

 

 

(0.6

)

 

 

(1.1

)

 

 

(1.2

)

Net periodic postretirement benefit gain

 

$

(0.5

)

 

$

(0.5

)

 

$

(0.9

)

 

$

(1.0

)