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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2012
Schedule Of Basic And Diluted Earnings Per Share |
|  | Years Ended December 31, |
$ in millions except share and per share amounts |  | 2012 |  |  | 2011 |  |  | 2010 |
Net income (loss) |  | $ | 1,234 |  |  | $ | (1,319) |  |  | $ | 53 |
Basic weighted average shares (1) |  |  | 193,842,435 |  |  |  | 197,019,968 |  |  |  | 202,421,433 |
Effect of common stock equivalents: |  |  |  |  |  |  |  |  |  |  |  |
Stock options |  |  | 1,062,395 |  |  |  | — |  |  |  | 599,701 |
Diluted weighted average shares |  |  | 194,904,830 |  |  |  | 197,019,968 |  |  |  | 203,021,134 |
Net income (loss) per common share: |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 6.36 |  |  | $ | (6.69) |  |  | $ | 0.26 |
Diluted |  | $ | 6.33 |  |  | $ | (6.69) |  |  | $ | 0.26 |
(1)—Includes | 5,514,523, 5,080,742 and 5,325,428 of unvested restricted stock and units that receive nonforfeitable dividends or dividend equivalents for the years ended December 31, 2012, 2011 and 2010, respectively.

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