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Basis of Presentation (Tables)
 9 Months Ended
Sep. 30, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]
The impact of the adoption of the new accounting standard on Income from Continuing Operations and Net Income and the related basic and diluted per share amounts for the nine and three months ended September 30, 2012 is presented below:
(Dollars in Millions, Except Per Share Amounts)
 
Nine
Months
Ended
Sep 30,
2012
 
Three Months
Ended
Sep 30,
2012
Decrease in:
 
 
 
 
Income from Continuing Operations
 
$
(7.5
)
 
$
(2.5
)
Net Income
 
$
(7.5
)
 
$
(2.5
)
Income from Continuing Operations per Unrestricted Share:
 
 
 
 
Basic
 
$
(0.13
)
 
$
(0.04
)
Diluted
 
$
(0.13
)
 
$
(0.04
)
Net Income Per Unrestricted Share:
 
 
 
 
Basic
 
$
(0.13
)
 
$
(0.04
)
Diluted
 
$
(0.13
)
 
$
(0.04
)
The following line items presented in the Condensed Consolidated Statements of Income for the nine and three months ended September 30, 2011 were affected by the adoption of the new accounting standard:
 
 
Nine Months Ended Sep 30, 2011
 
Three Months Ended Sep 30, 2011
(Dollars in Millions, Except Per Share Amounts)
 
As Originally Reported
 
As Adjusted
 
Effect of Change
 
As Originally Reported
 
As Adjusted
 
Effect of Change
Insurance Expenses
 
$
500.8

 
$
513.5

 
$
12.7

 
$
172.6

 
$
176.8

 
$
4.2

Income Tax Benefit (Expense)
 
$
(5.1
)
 
$
(0.5
)
 
$
4.6

 
$
4.6

 
$
6.1

 
$
1.5

Income from Continuing Operations
 
$
44.8

 
$
36.7

 
$
(8.1
)
 
$
3.8

 
$
1.1

 
$
(2.7
)
Net Income
 
$
58.3

 
$
50.2

 
$
(8.1
)
 
$
4.7

 
$
2.0

 
$
(2.7
)
Income from Continuing Operations per Unrestricted Share:
 
 
 
 
 
 
 
 
 
 
 
 
Basic
 
$
0.74

 
$
0.61

 
$
(0.13
)
 
$
0.06

 
$
0.01

 
$
(0.05
)
Diluted
 
$
0.74

 
$
0.61

 
$
(0.13
)
 
$
0.06

 
$
0.01

 
$
(0.05
)
Net Income Per Unrestricted Share:
 
 
 
 
 
 
 
 
 
 
 
 
Basic
 
$
0.96

 
$
0.83

 
$
(0.13
)
 
$
0.08

 
$
0.03

 
$
(0.05
)
Diluted
 
$
0.96

 
$
0.83

 
$
(0.13
)
 
$
0.08

 
$
0.03

 
$
(0.05
)