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Employee Benefits
 6 Months Ended
Jun. 30, 2020
Compensation And Retirement Disclosure [Abstract]  
Employee Benefits

 

5. Employee Benefits

Qualified and Nonqualified Defined Benefit Pension Plans

The following table presents the components of our Company-sponsored pension plan costs for the three and six months ended June 30:

 

 

Three Months

 

 

Six Months

 

(in millions)

 

2020

 

 

2019

 

 

2020

 

 

2019

 

Interest cost

 

$

9.6

 

 

$

11.4

 

 

$

19.2

 

 

$

22.8

 

Expected return on plan assets

 

 

(14.9

)

 

 

(14.3

)

 

 

(29.9

)

 

 

(28.6

)

Amortization of prior service credit

 

 

(0.1

)

 

 

(0.1

)

 

 

(0.2

)

 

 

(0.2

)

Amortization of prior net pension loss

 

 

3.7

 

 

 

3.2

 

 

 

7.5

 

 

 

6.4

 

Total net periodic pension cost

 

$

(1.7

)

 

$

0.2

 

 

$

(3.4

)

 

$

0.4

 

We have contributed $2.1 million to our Company-sponsored pension plans through June 30, 2020. Under the CARES Act, we are not required to make the remaining $29.3 million of contributions in 2020.  These contributions will be made on January 1, 2021, but may be made sooner.