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(Loss) Earnings per Common Share (Tables)
 12 Months Ended
Dec. 31, 2012
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The following table sets forth the computation of the weighted average basic and diluted (loss) earnings per share:
 
Years Ended December 31,
 
2012
 
2011
 
2010
 
(In millions)
Numerator:
 
 
 
 
 
Loss from continuing operations
$
(340.7
)
 
$
(46.7
)
 
$
(158.3
)
Loss from discontinued operations
—

 
—

 
(0.2
)
Net loss
$
(340.7
)
 
$
(46.7
)
 
$
(158.5
)
Denominator:
 
 
 
 
 
Weighted average number of common shares outstanding during the period
37.5

 
37.7

 
37.8

Dilutive effect of stock-based compensation plans
—

 
—

 
—

Weighted average number of diluted shares outstanding during the period
37.5

 
37.7

 
37.8

 
 
 
 
 
 
Basic loss per common share:
 
 
 
 
 
Continuing operations
$
(9.09
)
 
$
(1.24
)
 
$
(4.19
)
Discontinued operations
—

 
—

 
(0.01
)
Net loss
(9.09
)
 
(1.24
)
 
(4.19
)
Diluted loss per common share:
 
 
 
 
 
Continuing operations
$
(9.09
)
 
$
(1.24
)
 
$
(4.19
)
Discontinued operations
—

 
—

 
(0.01
)
Net loss
(9.09
)
 
(1.24
)
 
(4.19
)
Anti-dilutive shares excluded from calculation
6.3

 
5.4

 
4.9