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Earnings Per Share
 9 Months Ended
Sep. 30, 2013
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Earnings Per Share

Note 12: Earnings Per Share

Basic earnings per share excludes dilution and is computed by dividing income available to common shareholders by the weighted average number of common shares outstanding during the period. Diluted earnings per share reflects the dilutive effect of all stock options, warrants and other items outstanding during the period that could potentially result in the issuance of common stock. For the three months ended September 30, 2013 and 2012, there were 26,988,764 and 28,732,318, respectively, of stock options and warrants outstanding that were not included in the diluted earnings per share calculation because they were antidilutive. For the nine months ended September 30, 2013 and 2012, there were 27,369,789 and 28,785,415, respectively, of stock options and warrants outstanding that were not included in the diluted earnings per share calculation because they were antidilutive.

The following table presents the computation of basic and diluted earnings per share for the three and nine months ended September 30, 2013 and 2012:

              
   Three Months Ended September 30, Nine Months Ended September 30,
$ in millions except share and per share amounts 2013 2012 2013  2012
Net income (loss) $132 $7 $118 $598
Basic weighted average shares (1)  192,711,608  193,879,994  193,440,078  193,760,654
Effect of common stock equivalents:            
 Stock options and warrants  4,035,163  1,097,648  4,322,410  1,074,883
Diluted weighted average shares  196,746,771  194,977,642  197,762,488  194,835,537
Net income (loss) per common share:            
 Basic $0.68 $0.04 $0.61 $3.09
 Diluted $0.67 $0.04 $0.60 $3.07
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(1) - Includes 4,349,481 and 5,524,396 of unvested restricted stock and units that receive nonforfeitable dividends or dividend equivalents for the three months ended September 30,
 2013 and 2012, respectively. Includes 4,981,970 and 5,442,143 of unvested restricted stock and units that receive nonforfeitable dividends or dividend equivalents for the
 nine months ended September 30, 2013 and 2012, respectively.