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Earnings per Share
 6 Months Ended
Jun. 30, 2017
Earnings Per Share [Abstract]  
Earnings per Share
Basic and diluted earnings per share were computed as follows:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
(in millions except share and per share amounts)
2017
 
2016
 
2017
 
2016
Loss from continuing operations
$
(30.3
)
 
$
(6.8
)
 
$
(35.0
)
 
$
(19.3
)
Earnings (loss) from discontinued operations, net
$
0.6

 
$
(17.8
)
 
$
2.1

 
$
(34.7
)
Net loss
$
(29.7
)
 
$
(24.6
)
 
$
(32.9
)
 
$
(54.0
)
 
 
 
 
 
 
 
 
Basic (loss) earnings per common share:
 
 
 
 
 
 
 
Loss from continuing operations
$
(0.34
)
 
$
(0.08
)
 
$
(0.39
)
 
$
(0.22
)
Earnings (loss) from discontinued operations, net
$
0.01

 
$
(0.20
)
 
$
0.02

 
$
(0.39
)
Net loss
$
(0.33
)
 
$
(0.28
)
 
$
(0.37
)
 
$
(0.61
)
 
 
 
 
 
 
 
 
Weighted average shares outstanding
89,361,352

 
88,652,453

 
89,168,499

 
88,594,597

 
 
 
 
 
 
 
 
Diluted (loss) earnings per common share:
 

 
 

 
 
 
 
Loss from continuing operations
$
(0.34
)
 
$
(0.08
)
 
$
(0.39
)
 
$
(0.22
)
Earnings (loss) from discontinued operations, net
$
0.01

 
$
(0.20
)
 
$
0.02

 
$
(0.39
)
Net loss
$
(0.33
)
 
$
(0.28
)
 
$
(0.37
)
 
$
(0.61
)
 
 
 
 
 
 
 
 
Weighted-average shares outstanding
89,361,352

 
88,652,453

 
89,168,499

 
88,594,597



For the three and six months ended June 30, 2017, the weighted-average number of anti-dilutive potential common shares excluded from the earnings per share calculation above was 4,446,261 and 4,245,594, respectively. For the three and six months ended June 30, 2016, the weighted-average number of anti-dilutive potential common shares excluded from the earnings per share calculation above was 5,855,448 and 5,579,582, respectively.