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Income per Common Share
 3 Months Ended
Mar. 31, 2016
Earnings Per Share [Abstract]  
Income per Common Share [Text Block]
Loss) per Common Share
Basic income (loss) per share is based on the weighted average number of common shares outstanding.  Diluted income per share assumes exercise of stock options, provided the effect is not antidilutive. The per share calculations below exclude 13 million stock options for the first three months of 2016 and 2015 that were antidilutive.
 
Three Months Ended March 31,
(In millions, except per share data)
2016
 
2015
Net income (loss)
$
(407
)
 
$
(276
)
 
 
 
 
Weighted average common shares outstanding
730

 
675

Weighted average common shares, diluted
730

 
675

Net income (loss) per share:
 
 
 
Basic
$
(0.56
)
 
$
(0.41
)
Diluted
$
(0.56
)
 
$
(0.41
)