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Earnings Per Common Share (Tables)
 9 Months Ended
Sep. 30, 2013
Earnings Per Share [Abstract]  
Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Table Text Block]
The following table shows the computation of basic and diluted EPS:
 
 
Three Months Ended
 
Nine Months Ended
 
September 30,
 
September 30,
(in millions, except per share amounts)
2013
 
2012
 
2013
 
2012
Numerator:
 
 
 
 
 
 
 
Net income (loss)
$
9.3

 
$
3.9

 
$
(26.6
)
 
$
21.0

Preferred stock dividends
2.6

 
2.6

 
7.8

 
7.8

Net income (loss) applicable to common shareholders - basic and diluted
$
6.7

 
$
1.3

 
$
(34.4
)
 
$
13.2

Denominator:
 
 
 
 
 
 
 
Weighted average common shares outstanding - basic
207.0

 
196.4

 
205.6

 
195.8

Warrants
—

 
5.6

 
—

 
3.9

Stock-based compensation arrangements
1.5

 
3.6

 
—

 
3.3

Weighted average common shares outstanding - diluted
208.5

 
205.6

 
205.6

 
203.0

Basic and diluted earnings (loss) per common share
$
0.03

 
$
0.01

 
$
(0.17
)
 
$
0.07