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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

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Three Months Ended March 31, 

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2024

 

2023

Service cost

 

$

1.0

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$

1.9

Interest cost

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6.1

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6.5

Expected return on plan assets

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(7.2)

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(7.3)

Amortization of prior service cost

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0.3

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0.4

Amortization of net actuarial losses

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1.0

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0.6

Net pension expense

 

$

1.2

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$

2.1