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Pension and Postretirement Benefits
 3 Months Ended
Mar. 31, 2020
Retirement Benefits [Abstract]  
Pension and Postretirement Benefits
Pension and Postretirement Benefits

The components of net periodic benefit (income) costs recognized during interim periods were as follows:

 
Pension Benefits
 
Postretirement Benefits
 
Three Months Ended March 31,
 
Three Months Ended March 31,
 
2020
 
2019
 
2020
 
2019
 
(In millions)
Service costs
$
1.1

 
$
0.9

 
$
—

 
$
—

Interest costs
0.5

 
0.7

 
—

 
0.1

Expected return on plan assets
(2.9
)
 
(2.7
)
 
—

 
—

Recognized net actuarial loss
0.5

 
0.6

 
0.1

 
—

Net periodic benefit (income) expense
$
(0.8
)
 
$
(0.5
)
 
$
0.1

 
$
0.1