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Employee Benefit Plans (Tables)
3 Months Ended
Mar. 31, 2019
Compensation And Retirement Disclosure [Abstract]  
Components of Net Periodic Benefit Cost The components of net periodic defined benefit pension cost are presented in the table below.

 

 

Three months ended

 

 

March 31,

 

 

2018

 

 

2019

 

 

(In millions)

 

Service cost

$

3.0

 

 

$

2.8

 

Interest cost

 

3.6

 

 

 

3.5

 

Expected return on plan assets

 

(3.4

)

 

 

(3.2

)

Amortization of prior service cost

 

.1

 

 

 

.1

 

Recognized actuarial losses

 

3.5

 

 

 

3.4

 

Total

$

6.8

 

 

$

6.6