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Benefit Plans and Other Postretirement Benefits (Tables)
3 Months Ended
Mar. 31, 2023
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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2023

 

2022

Service cost

 

$

1.9

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$

1.5

Interest cost

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6.5

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3.5

Expected return on plan assets

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(7.3)

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(7.5)

Amortization of prior service cost

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0.4

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0.4

Amortization of net actuarial losses

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0.6

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4.1

Net pension expense

 

$

2.1

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$

2.0

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