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Earnings per Share (Tables)
 6 Months Ended
Jun. 30, 2014
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
The following table sets forth the computation of basic and diluted earnings per share:
Dollar and share amounts in millions, except per
share amounts
Quarter Ended June 30,
 
Six Months Ended June 30,
2014
 
2013
 
2014
 
2013
Numerator:
 
 
 
 
 
 
 
Income (loss) common shares:
 
 
 
 
 
 
 
Income (loss) from continuing operations
$
2.1

 
$
94.1

 
$
(12.1
)
 
$
159.1

Income from discontinued operations
—

 
0.2

 
—

 
0.3

Net income (loss)
$
2.1

 
$
94.3

 
$
(12.1
)
 
$
159.4

Denominator:
 
 
 
 
 
 
 
Basic - weighted average common shares outstanding
140.8

 
139.1

 
140.8

 
138.8

Dilutive effect of stock warrants
1.3

 
2.7

 
—

 
2.9

Dilutive effect of stock plans
1.9

 
2.3

 
—

 
2.6

Diluted shares outstanding
144.0

 
144.1

 
140.8

 
144.3

Basic earnings per share:
 
 
 
 
 
 
 
Income (loss) from continuing operations
$
0.01

 
$
0.67

 
$
(0.09
)
 
$
1.14

Income from discontinued operations
—

 
0.01

 
—

 
0.01

Net income (loss) per share
$
0.01

 
$
0.68

 
$
(0.09
)
 
$
1.15

Diluted earnings per share:
 
 
 
 
 
 
 
Income (loss) from continuing operations
$
0.01

 
$
0.65

 
$
(0.09
)
 
$
1.10

Income from discontinued operations
—

 
—

 
—

 
—

Net income (loss) per share
$
0.01

 
$
0.65

 
$
(0.09
)
 
$
1.10