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Earnings Per Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2013 | Mar. 31, 2012
BASIC EARNINGS PER SHARE |  |
Income (loss) from continuing operations attributable to The AES Corporation common stockholders (Income) | $ 106 | $ 341
Income (loss) from continuing operations attributable to The AES Corporation common stockholders (Shares) | 745 | 766
Income from continuing operations attributable to The AES Corporation common stockholders, net of tax | $ 0.14 | $ 0.45
EFFECT OF DILUTIVE SECURITIES |  |
Convertible securities (Income) |  | 6
Convertible securities (Shares) |  | 15
Convertible securities (Per Share) |  | $ 0
Stock options (Shares) | 1 | 1
Restricted stock units (Shares) | 3 | 3
Restricted stock units (Per Share) | $ 0 | $ (0.01)
DILUTED EARNINGS PER SHARE (INCOME) | $ 106 | $ 347
DILUTED EARNINGS PER SHARE (SHARES) | 749 | 785
Diluted Earnings Per Share | $ 0.14 | $ 0.44
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |
Shares of common stock issued under the Company's profit sharing plan | 1 |
Stock Options [Member] | Exercise price exceeds market price [Member] |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |
Additional options outstanding that could potentially dilute EPS in the future | 8 | 7
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 | 1 | 2

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