v3.24.2
Employee Benefit Plans
 6 Months Ended
Jun. 30, 2024
Retirement Benefits [Abstract]  
Employee Benefit Plans . Employee Benefit Plans

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

)