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Pension Benefits and Postretirement Benefits Other Than Pensions
 9 Months Ended
Sep. 30, 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 nine and three months ended September 30, 2012 and 2011 were:
 
 
Nine Months Ended
 
Three Months Ended
(Dollars in Millions)
 
Sep 30,
2012
 
Sep 30,
2011
 
Sep 30,
2012
 
Sep 30,
2011
Service Cost Earned
 
$
8.2

 
$
7.7

 
$
2.6

 
$
2.6

Interest Cost on Projected Benefit Obligation
 
16.8

 
17.2

 
5.6

 
5.7

Expected Return on Plan Assets
 
(22.3
)
 
(18.3
)
 
(7.4
)
 
(6.1
)
Amortization of Accumulated Unrecognized Actuarial Loss
 
14.1

 
7.0

 
4.7

 
2.3

Total Pension Expense Recognized
 
$
16.8

 
$
13.6

 
$
5.5

 
$
4.5


The components of Postretirement Benefits Other than Pensions Expense for the nine and three months ended September 30, 2012 and 2011 were:
 
 
Nine Months Ended
 
Three Months Ended
(Dollars in Millions)
 
Sep 30,
2012
 
Sep 30,
2011
 
Sep 30,
2012
 
Sep 30,
2011
Service Cost on Benefits Earned
 
$
0.2

 
$
0.1

 
$
0.1

 
$
—

Interest Cost on Projected Benefit Obligation
 
1.2

 
1.4

 
0.4

 
0.5

Amortization of Accumulated Unrecognized Actuarial Gain
 
(0.9
)
 
(0.5
)
 
(0.3
)
 
(0.2
)
Total Postretirement Benefits Other than Pensions Expense
 
$
0.5

 
$
1.0

 
$
0.2

 
$
0.3