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Employee Benefits
3 Months Ended
Mar. 31, 2014
Employee Benefits

7. Employee Benefits

The components of the estimated net pension and other postretirement benefits plan income for the three months ended March 31, 2014 and 2013 were as follows:

 

 

Three Months Ended
March  31,

 

 

2014

 

 

2013

 

Pension (income) expense

 

 

 

 

 

 

 

Service cost

$

0.5

 

 

$

0.8

 

Interest cost

 

47.7

 

 

 

44.6

 

Expected return on plan assets

 

(63.1

)

 

 

(60.6

)

Amortization, net

 

7.8

 

 

 

12.6

 

Net pension income

$

(7.1

)

 

$

(2.6

)

Other postretirement benefits plan (income) expense

 

 

 

 

 

 

 

Service cost

$

1.1

 

 

$

1.8

 

Interest cost

 

4.2

 

 

 

4.1

 

Expected return on plan assets

 

(3.1

)

 

 

(3.0

)

Amortization, net

 

(6.4

)

 

 

(4.9

)

Net other postretirement benefits plan income

$

(4.2

)

 

$

(2.0

)