Quarterly report pursuant to Section 13 or 15(d)

PENSIONS AND OTHER POSTRETIREMENT BENEFITS (Tables)

v3.8.0.1
PENSIONS AND OTHER POSTRETIREMENT BENEFITS (Tables)
 3 Months Ended
Mar. 31, 2018
Postemployment Benefits [Abstract]  
Schedule of Net Benefit Costs
The following are the components of defined benefit pension and OPEB costs and credits:
Defined Benefit Pension Costs
 
(In Millions)
 
Three Months Ended
March 31,
 
2018
 
2017
Service cost
$
4.7

 
$
4.8

Interest cost
7.6

 
7.5

Expected return on plan assets
(15.0
)
 
(13.5
)
Amortization:
 
 
 
Prior service costs
0.5

 
0.6

Net actuarial loss
5.3

 
5.3

Net periodic benefit cost
$
3.1

 
$
4.7


Other Postretirement Benefits Credits
 
(In Millions)
 
Three Months Ended
March 31,
 
2018
 
2017
Service cost
$
0.5

 
$
0.5

Interest cost
2.1

 
2.1

Expected return on plan assets
(4.6
)
 
(4.4
)
Amortization:
 
 
 
Prior service credits
(0.8
)
 
(0.7
)
Net actuarial loss
1.2

 
1.2

Net periodic benefit credit
$
(1.6
)
 
$
(1.3
)