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Pension
 6 Months Ended
Jun. 30, 2019
Retirement Benefits [Abstract]  
Pension PENSION

Components of net periodic benefit cost were as follows:
 
Three Months Ended
June 30,
 
Six Months Ended June 30,
(In millions)
2019
 
2018
 
2019
 
2018
Service cost
$
0.5

 
$
0.5

 
$
0.9

 
$
1.0

Interest cost
2.9

 
2.7

 
5.5

 
5.4

Expected return on plan assets
(3.8
)
 
(4.3
)
 
(7.6
)
 
(8.5
)
Settlement charge
—

 
0.3

 
—

 
0.4

Amortization of net actuarial losses
1.4

 
1.7

 
3.1

 
3.3

Net periodic cost
$
1.0

 
$
0.9

 
$
1.9

 
$
1.6



We expect to contribute $8.1 million to our pension plans in 2019, $6.0 million of which would be contributed to our U.S. qualified pension plan. We contributed $2.0 million to our U.S. qualified pension plan during the six months ended June 30, 2019.