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Benefit Plans and Other Postretirement Benefits (Tables)
9 Months Ended
Sep. 30, 2025
Benefit Plans and Other Postretirement Benefits  
Schedule of components of net pension expense

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Three Months Ended September 30, 

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Nine Months Ended September 30, 

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2025

 

2024

  

2025

 

2024

Service cost

 

$

0.8

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$

0.9

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$

2.3

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$

2.7

Interest cost

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5.9

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6.1

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17.6

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18.1

Expected return on plan assets

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(6.7)

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(7.2)

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(19.9)

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(21.5)

Amortization of prior service cost

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0.3

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0.3

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0.9

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0.9

Amortization of net actuarial losses

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0.8

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0.8

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2.3

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2.5

Net pension expense

 

$

1.1

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$

0.9

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$

3.2

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$

2.7