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Earnings (Loss) Per Common Share (Tables)
 9 Months Ended
Sep. 30, 2019
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted A reconciliation of our basic and diluted earnings per common share is as follows:
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
(In millions, except per share data)
 
2019
 
2018
 
2019
 
2018
Net income (loss) to common shareholders
 
$
65.5

 
$
(13.1
)
 
$
207.3

 
$
131.7

Basic weighted average shares outstanding
 
233.9

 
238.7

 
233.8

 
239.9

Diluted weighted average shares outstanding
 
235.5

 
238.7

 
235.8

 
244.2

Earnings (loss) per common share:
 
 
 
 
 
 
 
 
Basic earnings (loss) per share
 
$
0.28

 
$
(0.05
)
 
$
0.89

 
$
0.55

Diluted earnings (loss) per share
 
$
0.28

 
$
(0.05
)
 
$
0.88

 
$
0.54