XML 38 R28.htm IDEA: XBRL DOCUMENT v3.8.0.1
Pension and Postretirement Benefits (Tables)
 9 Months Ended
Sep. 30, 2017
Retirement Benefits [Abstract]  
Components of net periodic benefit cost
The components of net periodic benefit (income) costs recognized during interim periods were as follows:

 
Pension Benefits
 
Postretirement Benefits
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2017
 
2016
 
2017
 
2016
 
2017
 
2016
 
2017
 
2016
 
(In millions)
Service costs
$
0.6

 
$
0.6

 
$
1.9

 
$
1.8

 
$
—

 
$
—

 
$
—

 
$
—

Interest costs
0.4

 
0.5

 
1.3

 
1.4

 
0.1

 
0.1

 
0.2

 
0.3

Expected return on plan assets
(2.4
)
 
(2.3
)
 
(7.2
)
 
(7.1
)
 
—

 
—

 
—

 
—

Recognized net actuarial loss
0.3

 
0.3

 
0.9

 
0.9

 
—

 
—

 
0.1

 
0.2

Net periodic benefit (income) costs
$
(1.1
)
 
$
(0.9
)
 
$
(3.1
)
 
$
(3.0
)
 
$
0.1

 
$
0.1

 
$
0.3

 
$
0.5

Weighted average:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Discount rate
 
 
 
 
3.91
%
 
4.13
%
 
 
 
 
 
3.63
%
 
3.80
%
Expected return on plan assets
 
 
 
 
8.25
%
 
8.25
%