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Pension Benefits and Postretirement Benefits Other Than Pensions
 3 Months Ended
Mar. 31, 2012
Compensation and Retirement Disclosure [Abstract]  
Pension Benefits and Postretirement Benefits Other Than Pensions
Note 10 - Pension Benefits and Postretirement Benefits Other Than Pensions
The components of Pension Expense for the three months ended March 31, 2012 and 2011 were:
 
 
Three Months Ended
(Dollars in Millions)
 
Mar 31,
2012
 
Mar 31,
2011
Service Cost Earned
 
$
3.0

 
$
2.6

Interest Cost on Projected Benefit Obligation
 
5.6

 
5.7

Expected Return on Plan Assets
 
(7.4
)
 
(6.1
)
Amortization of Accumulated Unrecognized Actuarial Loss
 
4.5

 
2.1

Total Pension Expense Recognized
 
$
5.7

 
$
4.3


The components of Postretirement Benefits Other than Pensions Expense for the three months ended March 31, 2012 and 2011 were:
 
 
Three Months Ended
(Dollars in Millions)
 
Mar 31,
2012
 
Mar 31,
2011
Service Cost on Benefits Earned
 
$
0.1

 
$
—

Interest Cost on Projected Benefit Obligation
 
0.4

 
0.5

Amortization of Accumulated Unrecognized Actuarial Gain
 
(0.1
)
 
(0.2
)
Total Postretirement Benefits Other than Pensions Expense
 
$
0.4

 
$
0.3