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Retirement Plans
 9 Months Ended
Sep. 30, 2022
Retirement Benefits [Abstract]  
Retirement Plans

(11) Retirement Plans

The components of the net periodic benefit cost (credit) for our plans were as follows:

 

 

 

Defined Benefit Pension Plan

 

 

 

Three Months Ended

 

 

Nine Months Ended

 

 

 

September 30,

 

 

September 30,

 

 

 

2022

 

 

2021

 

 

2022

 

 

2021

 

Service cost

 

$

4.7

 

 

$

5.5

 

 

$

14.7

 

 

$

16.6

 

Interest cost

 

 

2.1

 

 

 

1.5

 

 

 

6.6

 

 

 

4.6

 

Expected return on assets

 

 

(3.6

)

 

 

(3.1

)

 

 

(11.1

)

 

 

(9.2

)

Net loss

 

 

0.5

 

 

 

—

 

 

 

1.4

 

 

 

—

 

Prior service cost

 

 

0.2

 

 

 

1.4

 

 

 

0.5

 

 

 

4.1

 

Total benefit cost

 

$

3.9

 

 

$

5.3

 

 

$

12.1

 

 

$

16.1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Retiree Health Care Plan

 

 

 

Three Months Ended

 

 

Nine Months Ended

 

 

 

September 30,

 

 

September 30,

 

 

 

2022

 

 

2021

 

 

2022

 

 

2021

 

Interest cost

 

 

0.1

 

 

$

0.1

 

 

$

0.2

 

 

$

0.2

 

Prior service credit

 

 

(0.2

)

 

 

(0.2

)

 

 

(0.6

)

 

 

(0.6

)

Net loss

 

 

—

 

 

 

—

 

 

 

0.1

 

 

 

0.1

 

Total benefit credit

 

$

(0.1

)

 

$

(0.1

)

 

$

(0.3

)

 

$

(0.3

)

 

During the three and nine months ended September 30, 2022, contributions made to our pension plans were $1.3 and $5.8, respectively, and contributions made to our retiree health care plan were $0.3 and $0.9, respectively. During 2022, we expect to make total contributions of approximately $16.0 to our pension plans and to fund our retiree health care payments as incurred.