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Employee Benefit Plans (Tables)
 6 Months Ended
Jun. 30, 2024
Retirement Benefits [Abstract]  
Components of Net Pension Expense (Income) The following information details the components of net pension expense (income) for the Company’s defined benefit plans:

 

 

Three Months Ended

 

 

Six Months Ended

 

 

 

June 30

 

 

June 30

 

 

 

2024

 

 

2023

 

 

2024

 

 

2023

 

Service cost

 

$

27.6

 

 

$

21.9

 

 

$

55.4

 

 

$

46.9

 

Interest on projected benefit obligation

 

 

33.4

 

 

 

32.6

 

 

 

67.0

 

 

 

63.7

 

Expected return on assets

 

 

(60.5

)

 

 

(57.6

)

 

 

(121.1

)

 

 

(115.1

)

Amortization of prior service costs

 

 

.4

 

 

 

.4

 

 

 

.7

 

 

 

.7

 

Recognized actuarial loss

 

 

1.6

 

 

 

1.7

 

 

 

2.8

 

 

 

2.4

 

Net pension expense (income)

 

$

2.5

 

 

$

(1.0

)

 

$

4.8

 

 

$

(1.4

)