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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2013
Text Block [Abstract] |
Schedule Of Basic And Diluted Earnings Per Share |
|  |  | Three Months Ended June 30, |  | Six Months Ended June 30,
$ in millions except share and per share amounts |  | 2013 |  | 2012 |  | 2013 |  |  | 2012
Net income (loss) |  | $ | (178) |  | $ | 581 |  | $ | (14) |  | $ | 591
Basic weighted average shares (1) |  |  | 193,104,610 |  |  | 193,926,953 |  |  | 193,810,351 |  |  | 193,700,328
Effect of common stock equivalents: |  |  |  |  |  |  |  |  |  |  |  |
| Stock options and warrants |  |  | 0 |  |  | 1,014,280 |  |  | 0 |  |  | 1,063,289
Diluted weighted average shares |  |  | 193,104,610 |  |  | 194,941,233 |  |  | 193,810,351 |  |  | 194,763,617
Net income (loss) per common share: |  |  |  |  |  |  |  |  |  |  |  |
| Basic |  | $ | (0.92) |  | $ | 2.99 |  | $ | (0.07) |  | $ | 3.05
| Diluted |  | $ | (0.92) |  | $ | 2.98 |  | $ | (0.07) |  | $ | 3.03
_________ |  |  |  |  |  |  |  |  |  |  |  |
(1) - Includes 4,490,348 and 5,597,797 of unvested restricted stock and units that receive nonforfeitable dividends or dividend equivalents for the three months ended June 30,
| 2013 and 2012, respectively. Includes 5,303,456 and 5,400,564 of unvested restricted stock and units that receive nonforfeitable dividends or dividend equivalents for the
| six months ended June 30, 2013 and 2012, respectively.

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