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Earnings Per Share (Details) (USD $) In Millions, except Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012 | Sep. 30, 2011
BASIC EARNINGS PER SHARE |  |  |  |
Income (loss) from continuing operations attributable to The AES Corporation common stockholders (Income) | $ (1,569) | $ (68) | $ (1,155) | $ 360
Income (loss) from continuing operations attributable to The AES Corporation common stockholders (Shares) | 747,000,000 | 778,000,000 | 759,000,000 | 783,000,000
Income (loss) from continuing operations attributable to The AES Corporation common stockholders, net of tax | $ (2.10) | $ (0.09) | $ (1.52) | $ 0.46
EFFECT OF DILUTIVE SECURITIES |  |  |  |
Director stock units (Shares) |  |  | 0 | 0
Director stock units (Per Share) |  |  | $ 0 | $ 0
Stock options (Shares) | 0 | 0 | 0 | 1,000,000
Restricted stock units (Shares) | 0 | 0 | 0 | 3,000,000
Restricted stock units (Per Share) |  | $ 0 | $ 0 | $ 0
DILUTED EARNINGS PER SHARE (INCOME) | $ (1,569) | $ (68) | $ (1,155) | $ 360
DILUTED EARNINGS PER SHARE (SHARES) | 747,000,000 | 778,000,000 | 759,000,000 | 787,000,000
Diluted Earnings Per Share | $ (2.10) | $ (0.09) | $ (1.52) | $ 0.46
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Shares of common stock issued upon exercise of stock options | 246,715 |  | 1,290,732 |
Shares of common stock issued under the Company's profit sharing plan |  |  | 1,013,872 |
Stock Options [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Additional options outstanding that could potentially dilute EPS in the future |  |  | 6,411,169 | 15,564,118
Stock Options [Member] | Anti-dilutive [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Additional options outstanding that could potentially dilute EPS in the future | 1,953,938 |  | 3,360,138 |
Stock Options [Member] | Anti-dilutive; Lack of generated income [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Additional options outstanding that could potentially dilute EPS in the future | 807,563 | 1,457,025 | 1,092,802 |
Restricted Stock Units (RSUs) [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Additional options outstanding that could potentially dilute EPS in the future |  |  | 1,153,866 |
Restricted Stock Units (RSUs) [Member] | Anti-dilutive [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Additional options outstanding that could potentially dilute EPS in the future | 5,264,072 |  | 6,095,706 |
Restricted Stock Units (RSUs) [Member] | Anti-dilutive; Lack of generated income [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Additional options outstanding that could potentially dilute EPS in the future | 3,062,761 | 2,882,463 | 3,007,482 |

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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph a -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1448-109256 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 Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 8 -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 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 07-4 -Paragraph 4 -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 Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 171 -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 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Weighted-Average Number of Common Shares Outstanding -URI http://asc.fasb.org/extlink&oid=6528421 + Details
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