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Benefit Plans and Other Postretirement Benefits (Tables)
3 Months Ended
Mar. 31, 2024
Benefit Plans and Other Postretirement Benefits  
Schedule of components of net pension expense

Three Months Ended March 31, 

    

2024

 

2023

Service cost

 

$

1.0

$

1.9

Interest cost

 

6.1

 

6.5

Expected return on plan assets

 

(7.2)

 

(7.3)

Amortization of prior service cost

 

0.3

 

0.4

Amortization of net actuarial losses

 

1.0

 

0.6

Net pension expense

 

$

1.2

$

2.1