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Net Income Per Common Share Computations (Tables)
 3 Months Ended
Mar. 31, 2019
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted The following is a reconciliation of the numerator and denominator of the net income per common share computations:
 
Three Months Ended March 31,
(in millions, except per share data)
2019
 
2018
Numerator for basic net income per common share:
 
 
 
Net income from continuing operations
$
11.9

 
$
14.1

Net (loss) income from discontinued operations
(0.3
)
 
167.9

Numerator for basic net income per common share
$
11.6

 
$
182.0

 
 
 
 
Numerator for diluted net income from continuing operations per common share
$
11.9

 
$
14.1

Numerator for diluted net income per common share:
$
11.6

 
$
182.0

 
 
 
 
Denominator for net income per common share:
 
 
 
Basic
40.4

 
43.3

Plus dilutive effect of stock awards
0.2

 
0.2

Diluted
40.6

 
43.5

 
 
 
 
Net income (loss) per common share data:
 
 
 
Basic
 
 
 
Continuing operations
$
0.30

 
$
0.33

Discontinued operations
$
(0.01
)
 
$
3.87

Net income per common share - basic
$
0.29

 
$
4.20

 
 
 
 
Diluted
 
 
 
Continuing operations
$
0.30

 
$
0.32

Discontinued operations
$
(0.01
)
 
$
3.86

Net income per common share - diluted
$
0.29

 
$
4.18