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Earnings Per Share ("EPS") (Tables)
 6 Months Ended
Jun. 30, 2018
Earnings Per Share [Abstract]  
Calculation of basic and diluted earnings per share
The calculation of basic and diluted earnings per share for the three and six months ended June 30, 2018 and 2017 is set forth in the following table (in millions, except per share amounts):
 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
 
2018
 
2017
 
2018
 
2017
Net income (loss) from continuing operations
$
1.3

 
$
(11.4
)
 
$
(10.0
)
 
$
(26.3
)
Income from discontinued operations, net of tax
34.0

 
28.5

 
65.5

 
56.2

Net income
$
35.3

 
$
17.1

 
$
55.5

 
$
29.9

 
 
 
 
 
 
 
 
Weighted Average Shares Outstanding:
 
 
 
 
 
 
 
Basic weighted average shares outstanding
47.1

 
46.7

 
47.0

 
46.7

Dilutive effect of stock options and restricted share unit awards
1.1

 
—

 
—

 
—

Diluted weighted average shares outstanding
48.2

 
46.7

 
47.0

 
46.7

 
 
 
 
 
 
 
 
Basic Earnings (Loss) Per Share
 
 
 
 
 
 
 
Continuing operations
$
0.03

 
$
(0.24
)
 
$
(0.21
)
 
$
(0.56
)
Discontinued operations
$
0.72

 
$
0.61

 
$
1.39

 
$
1.20

Net income
$
0.75

 
$
0.37

 
$
1.18

 
$
0.64

 
 
 
 
 
 
 
 
Diluted Earnings (Loss) Per Share
 
 
 
 
 
 
 
Continuing operations
$
0.03

 
$
(0.24
)
 
$
(0.21
)
 
$
(0.56
)
Discontinued operations
$
0.70

 
$
0.61

 
$
1.39

 
$
1.20

Net income
$
0.73

 
$
0.37

 
$
1.18

 
$
0.64