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Quarterly report pursuant to Section 13 or 15(d)

PENSIONS AND OTHER POSTRETIREMENT BENEFITS (Tables)

v3.10.0.1
PENSIONS AND OTHER POSTRETIREMENT BENEFITS (Tables)
 6 Months Ended
Jun. 30, 2018
Postemployment Benefits [Abstract] Ìý
Schedule of Net Benefit Costs
The following are the components of defined benefit pension and OPEB costs and credits:
Defined Benefit Pension Costs
Ìý
(In Millions)
Ìý
Three Months Ended
June 30,
Ìý
Six Months Ended
June 30,
Ìý
2018
Ìý
2017
Ìý
2018
Ìý
2017
Service cost
$
4.6

Ìý
$
4.7

Ìý
$
9.3

Ìý
$
9.5

Interest cost
7.5

Ìý
7.5

Ìý
15.1

Ìý
15.0

Expected return on plan assets
(15.0
)
Ìý
(13.6
)
Ìý
(30.0
)
Ìý
(27.1
)
Amortization:
Ìý
Ìý
Ìý
Ìý
Ìý
Ìý
Ìý
Prior service costs
0.6

Ìý
0.7

Ìý
1.1

Ìý
1.3

Net actuarial loss
5.3

Ìý
5.3

Ìý
10.6

Ìý
10.6

Net periodic benefit cost
$
3.0

Ìý
$
4.6

Ìý
$
6.1

Ìý
$
9.3


Other Postretirement Benefits Credits
Ìý
(In Millions)
Ìý
Three Months Ended
June 30,
Ìý
Six Months Ended
June 30,
Ìý
2018
Ìý
2017
Ìý
2018
Ìý
2017
Service cost
$
0.5

Ìý
$
0.5

Ìý
$
1.0

Ìý
$
1.0

Interest cost
2.0

Ìý
2.2

Ìý
4.1

Ìý
4.3

Expected return on plan assets
(4.6
)
Ìý
(4.5
)
Ìý
(9.2
)
Ìý
(8.9
)
Amortization:
Ìý
Ìý
Ìý
Ìý
Ìý
Ìý
Ìý
Prior service credits
(0.7
)
Ìý
(0.8
)
Ìý
(1.5
)
Ìý
(1.5
)
Net actuarial loss
1.3

Ìý
1.3

Ìý
2.5

Ìý
2.5

Net periodic benefit credit
$
(1.5
)
Ìý
$
(1.3
)
Ìý
$
(3.1
)
Ìý
$
(2.6
)