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Pension Benefits and Postretirement Benefits Other Than Pensions
 3 Months Ended
Mar. 31, 2015
Compensation and Retirement Disclosure [Abstract]  
Pension Benefits and Postretirement Benefits Other Than Pensions
Note 9 - Pension Benefits and Postretirement Benefits Other Than Pensions
The components of Pension Expense for the three months ended March 31, 2015 and 2014 were:
 
 
Three Months Ended
(Dollars in Millions)
 
Mar 31,
2015
 
Mar 31,
2014
Service Cost Earned
 
$
2.6

 
$
2.2

Interest Cost on Projected Benefit Obligation
 
6.4

 
6.2

Expected Return on Plan Assets
 
(8.8
)
 
(8.7
)
Amortization of Accumulated Net Unrecognized Pension Costs
 
5.8

 
2.3

Total Pension Expense Recognized
 
$
6.0

 
$
2.0


The components of Postretirement Benefits Other than Pensions Expense for the three months ended March 31, 2015 and 2014 were:
 
 
Three Months Ended
(Dollars in Millions)
 
Mar 31,
2015
 
Mar 31,
2014
Service Cost on Benefits Earned
 
$
—

 
$
0.1

Interest Cost on Projected Benefit Obligation
 
0.3

 
0.3

Amortization of Accumulated Net Unrecognized Gain
 
(0.4
)
 
(0.3
)
Total Postretirement Benefits Other than Pensions Expense (Benefit)
 
$
(0.1
)
 
$
0.1