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Earnings (Loss) Per Share (Tables)
 9 Months Ended
Sep. 30, 2019
Earnings Per Share [Abstract]  
Basic and diluted earnings (loss) per share
(1) In periods when we report a net loss, all share-based compensation awards are excluded from the calculation of diluted weighted average shares outstanding because of their anti-dilutive effect on earnings (loss) per share.
The following table shows the basic and diluted earnings (loss) per share:
 
For the three months ended September 30,
 
2019
 
2018
 
Net Income (Loss)
 
Shares (in millions)
 
Per Share
 
Net Income (Loss)
 
Shares (in millions)
 
Per Share
Net income (loss)
$
(20.7
)
 
 
 
 
 
$
(20.3
)
 
 
 
 
Amount allocated to common stockholders
100.0
%
 
 
 
 
 
100.0
%
 
 
 
 
Basic and diluted EPS(1)
$
(20.7
)
 
88.9

 
$
(0.23
)
 
$
(20.3
)
 
87.6

 
$
(0.23
)
 
 
 
 
 
 
 
 
 
 
 
 
 
For the nine months ended September 30,
 
2019
 
2018
 
Net Income (Loss)
 
Shares (in millions)
 
Per Share
 
Net Income (Loss)
 
Shares
(in millions)
 
Per Share
Net income (loss)
$
(76.0
)
 
 
 
 
 
$
(1.2
)
 
 
 
 
Amount allocated to common stockholders
100.0
%
 
 
 
 
 
100.0
%
 
 
 
 
Basic and diluted EPS(1)
$
(76.0
)
 
88.6

 
$
(0.86
)
 
$
(1.2
)
 
87.6

 
$
(0.01
)
Securities excluded from the calculation of diluted EPS
 
Three months ended September 30,
 
Nine months ended September 30,
Securities excluded from the calculation of diluted EPS (in millions)(1):
2019
 
2018
 
2019
 
2018
Share-based compensation
0.7

 
1.3

 
0.6

 
1.4


(1) In periods when we report a net loss, all share-based compensation awards are excluded from the calculation of diluted weighted average shares outstanding because of their anti-dilutive effect on earnings (loss) per share.