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Earnings Per Share | 3 Months Ended
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Mar. 31, 2013
EARNINGS PER SHARE | 17. EARNINGS PER SHARE Basic and diluted earnings per share are based on the weighted average number of shares of common stock and potential common stock outstanding during the period. Potential common stock, for purposes of determining diluted earnings per share, includes the effects of dilutive restricted stock units, stock options and convertible securities. The effect of such potential common stock is computed using the treasury stock method or the if-c onverted method, as applicable. The following table s present a reconciliation of the numerator and denominator of the basic and diluted earnings per share computation for income from continuing operations for the three months ended March 31, 2013 and 2012. In the table below, income represents the numerator and weighted-average shares represent the denominator:
|  |  |  | Three Months Ended March 31,
|  |  |  | 2013 |  | 2012
|  |  |  | Income |  | Shares |  | $ per Share |  | Income |  | Shares |  | $ per Share
|  |  |  | (in millions except per share data)
BASIC EARNINGS PER SHARE |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Income from continuing operations attributable |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | to The AES Corporation common stockholders |  | $ | 106 |  | 745 |  | $ | 0.14 |  | $ | 341 |  | 766 |  | $ | 0.45
EFFECT OF DILUTIVE SECURITIES |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Convertible securities |  |  | - |  | - |  |  | - |  |  | 6 |  | 15 |  |  | -
| Stock options |  |  | - |  | 1 |  |  | - |  |  | - |  | 1 |  |  | -
| Restricted stock units |  |  | - |  | 3 |  |  | - |  |  | - |  | 3 |  |  | (0.01)
DILUTED EARNINGS PER SHARE |  | $ | 106 |  | 749 |  | $ | 0.14 |  | $ | 347 |  | 785 |  | $ | 0.44
The calculation of diluted earnings per share excluded 8 and 7 million options outstanding at March 31, 2013 and 2012, respectively, that could potentially dilute basic earnings per share in the future. These options were not included in the computation of diluted earnings per share because the exercise price of those options exceeded the average market price during the related period. The calculation of diluted earnings per share also excluded 1 and 2 million restricted stock units outstanding at March 31, 2013 and 2012, respectively, that could potentially dilute basic earnings per share in the future. These restricted stock units were not included in the computation of diluted earnings per share because the average amount of compensation cost per share attributed to future service and not yet recognized exceeded the average market price during the related period and thus to include the restricted units would have been anti-dilutive. For the three months ended March 31, 2013 all 15 million convertible debentures were omitted from the earnings per share calculation because they were anti-dilutive. For the three months ended March 31, 2012, all convertible debentures were included in the earnings per share calculation. During the three months ended March 31, 2013, 1 million shares of common stock were issued under the Company's profit sharing plan.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=16381557&loc=d3e4984-109258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1278-109256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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