v2.4.0.6

Earnings Per Share Earnings (Loss) per Share (Tables) | 3 Months Ended
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Mar. 31, 2012
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] | The following tables summarize basic and dilutive earnings per share (in millions, except for per share amounts):
| Three Months Ended March 31,
| 2012 |  | 2011
Basic earnings per share |  |  |
Net income attributable to stockholders(a) | $ | 1,315 |  |  | $ | 3,366 |
Less: cumulative dividends on preferred stock and undistributed earnings allocated to Series B Preferred Stock participating security(b) | (311 | ) |  | (215 | )
Net income attributable to common stockholders | $ | 1,004 |  |  | $ | 3,151 |
Weighted-average common shares outstanding - basic | 1,572 |  |  | 1,504 |
Basic earnings per common share | $ | 0.64 |  |  | $ | 2.09 |
Diluted earnings per share |  |  |
Net income attributable to stockholders(a) | $ | 1,315 |  |  | $ | 3,366 |
Less: cumulative dividends on preferred stock and undistributed earnings allocated to Series B Preferred Stock participating security(c) | (305 | ) |  | (215 | )
Add: preferred dividends to holders of Series B Preferred Stock | — |  |  | 59 |
Net income attributable to common stockholders | $ | 1,010 |  |  | $ | 3,210 |
Weighted-average shares outstanding - diluted |  |  |
Weighted-average common shares outstanding - basic | 1,572 |  |  | 1,504 |
Dilutive effect of warrants | 116 |  |  | 162 |
Dilutive effect of conversion of Series B Preferred Stock | — |  |  | 148 |
Dilutive effect of restricted stock units (RSUs) | 4 |  |  | 3 |
Weighted-average common shares outstanding - diluted | 1,692 |  |  | 1,817 |
Diluted earnings per common share | $ | 0.60 |  |  | $ | 1.77 |
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(a) | Includes earned but undeclared dividends of $26 million on our Series A Preferred Stock and $20 million on our Series B Preferred Stock in the three months ended March 31, 2012 and 2011.

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations. + References No definition available. + Details
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