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Employee Benefits
 6 Months Ended
Jun. 30, 2021
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 plans:

 

 

Three Months

 

 

Six Months

 

(in millions)

 

2021

 

 

2020

 

 

2021

 

 

2020

 

Interest cost

 

$

7.7

 

 

$

9.6

 

 

$

15.3

 

 

$

19.2

 

Expected return on plan assets

 

 

(12.0

)

 

 

(14.9

)

 

 

(24.0

)

 

 

(29.9

)

Amortization of prior service credit

 

 

(0.1

)

 

 

(0.1

)

 

 

(0.2

)

 

 

(0.2

)

Amortization of prior net pension loss

 

 

3.0

 

 

 

3.7

 

 

 

6.1

 

 

 

7.5

 

Settlement adjustment

 

 

0.3

 

 

 

-

 

 

 

0.3

 

 

 

-

 

Total net periodic pension (benefit) cost

 

$

(1.1

)

 

$

(1.7

)

 

$

(2.5

)

 

$

(3.4

)