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Earnings Per Share (Details) (USD $) In Millions, except Share data, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2012 | Mar. 31, 2011
BASIC EARNINGS PER SHARE |  |
Income (loss) from continuing operations attributable to The AES Corporation common stockholders (Income) | $ 345 | $ 237
Income (loss) from continuing operations attributable to The AES Corporation common stockholders (Shares) | 766,000,000 | 787,000,000
Income from continuing operations attributable to The AES Corporation common stockholders, net of tax | $ 0.45 | $ 0.30
EFFECT OF DILUTIVE SECURITIES |  |
Convertible securities (Income) | 6 | 0
Convertible securities (Shares) | 15,000,000 | 0
Stock options (Shares) | 1,000,000 | 2,000,000
Restricted stock units (Shares) | 3,000,000 | 3,000,000
Restricted stock units (Per Share) | $ (0.01) | $ 0
DILUTED EARNINGS PER SHARE (INCOME) | $ 351 | $ 237
DILUTED EARNINGS PER SHARE (SHARES) | 785,000,000 | 792,000,000
Diluted Earnings Per Share | $ 0.44 | $ 0.30
Additional options outstanding that could potentially dilute EPS in the future | 6,599,286 | 16,253,344

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