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Retirement Plans (Tables)
 9 Months Ended
Sep. 30, 2018
Retirement Benefits [Abstract]  
Components of Net Periodic Pension (Credit) Cost
Components of net periodic pension (credit) cost included the following:
 
 
United States
 
United States
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
(In millions)
 
2018
 
2017
 
2018
 
2017
Interest cost
 
$
0.5

 
$
0.7

 
$
1.6

 
$
1.9

Expected return on plan assets
 
(0.8
)
 
(0.9
)
 
(2.4
)
 
(2.5
)
Amortization of net actuarial loss
 
0.1

 
0.1

 
0.3

 
0.3

Net periodic pension credit
 
(0.2
)
 
(0.1
)
 
(0.5
)
 
(0.3
)
Settlement loss
 
—

 
0.8

 
—

 
0.8

Total pension (credit) cost
 
$
(0.2
)
 
$
0.7

 
$
(0.5
)
 
$
0.5