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Earnings (Loss) Per Share
 9 Months Ended
Sep. 30, 2019
Earnings Per Share [Abstract]  
Earnings (Loss) Per Share
Earnings (Loss) Per Share
Basic earnings (loss) per share ("EPS") amounts are calculated by dividing net income (loss) allocated to common stockholders by the weighted average number of common shares outstanding during the period. Diluted EPS amounts assume the issuance of common stock for all potentially dilutive securities.
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
)



 
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.