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Earnings Per Share (Details) - USD ($) | 3 Months Ended | 9 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Mar. 31, 2024 | Feb. 05, 2024 | Jun. 30, 2021 | Mar. 31, 2021 | Mar. 04, 2021
BASIC EARNINGS PER SHARE |  |  |  |  |  |  |  |  |
Income from continuing operations attributable to The AES Corporation common stockholders (Income) | $ 676,000,000 | $ 511,000,000 | $ 627,000,000 | $ 1,219,000,000 |  |  |  |  |
Income from continuing operations attributable to The AES Corporation common stockholders (Shares) | 712,000,000 | 711,000,000 | 712,000,000 | 704,000,000 |  |  |  |  |
DILUTED EARNINGS PER SHARE: |  |  |  |  |  |  |  |  |
Income from continuing operations, diluted | $ 671,000,000 | $ 511,000,000 | $ 612,000,000 | $ 1,219,000,000 |  |  |  |  |
Weighted average number of shares outstanding, diluted | 714,000,000 | 713,000,000 | 714,000,000 | 713,000,000 |  |  |  |  |
Equity Unit, Shares Issued (in shares) |  |  |  |  |  |  |  | 10,430,500 |
Corporate Equity Unit, Stated Value per Share (in dollars per share) |  |  |  |  |  |  |  | $ 100 |
Preferred Stock, Beneficial Ownership Interest in One Share |  |  |  |  |  |  |  | 10.00% |
Preferred Stock , Convertible, Initial Conversion Rate |  |  |  |  |  |  | $ 31.5428 |  |
Preferred Stock, Convertible, Conversion Price |  |  |  |  |  |  | $ 31.70 |  |
Shares Issued, Price Per Share (in dollars per share) |  |  |  |  |  | $ 25.73 |  |  | $ 25.88
Forward Contract Indexed to Issuer's Equity, Maximum Settlement Rate |  | 3.864 |  | 3.864 |  | 3.8859 |  |  |
Corporate Unit, Notional Value |  |  |  |  | $ 1,043,000,000 |  | $ 1,043,000,000 |  |
Preferred Stock, Value, Issued |  |  |  |  | $ 838,000,000 |  |  |  |
Increase in redemption value of redeemable stock of subsidiaries, per basic share | $ (0.01) | $ 0 | $ (0.02) | $ 0 |  |  |  |  |
Increase in redemption value of redeemable stock of subsidiaries | $ 5,000,000 | $ 0 | $ (15,000,000) | $ 0 |  |  |  |  |
Income from continuing operations available to The AES Corporation common stockholders | $ 0.94 | $ 0.72 | $ 0.86 | $ 1.73 |  |  |  |  |
Net Income (Loss) from Continuing Operations Available to Common Shareholders, Basic | $ 671,000,000 | $ 511,000,000 | $ 612,000,000 | $ 1,219,000,000 |  |  |  |  |
Weighted Average Number of Shares Outstanding, Basic | 712,000,000 | 711,000,000 | 712,000,000 | 704,000,000 |  |  |  |  |
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent | $ 676,000,000 | $ 511,000,000 | $ 627,000,000 | $ 1,219,000,000 |  |  |  |  |
Income from continuing operations, diluted | $ 671,000,000 | $ 511,000,000 | $ 612,000,000 | $ 1,219,000,000 |  |  |  |  |
DILUTED SHARES OUTSTANDING | 714,000,000 | 713,000,000 | 714,000,000 | 713,000,000 |  |  |  |  |
Net Income (Loss) from Continuing Operations Available to Common Shareholders, Diluted | $ 0.94 | $ 0.72 | $ 0.86 | $ 1.71 |  |  |  |  |
Income (Loss) from Continuing Operations Attributable, Per Basic Share | $ 0.95 | $ 0.72 | $ 0.88 | $ 1.73 |  |  |  |  |
AES AGIC Holdings |  |  |  |  |  |  |  |  |
DILUTED EARNINGS PER SHARE: |  |  |  |  |  |  |  |  |
Increase in redemption value of redeemable stock of subsidiaries |  |  | $ (10,000,000) |  |  |  |  |  |
Clean Energy |  |  |  |  |  |  |  |  |
DILUTED EARNINGS PER SHARE: |  |  |  |  |  |  |  |  |
Increase in redemption value of redeemable stock of subsidiaries |  |  | (5,000,000) |  |  |  |  |  |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |
EFFECT OF DILUTIVE SECURITIES |  |  |  |  |  |  |  |  |
Dilutive Securities, Effect on Basic Earnings Per Share, Options and Restrictive Stock Units | $ 0 | $ 0 | $ 0 | $ 0 |  |  |  |  |
Restricted stock units (Shares) | 2,000,000 | 2,000,000 | 2,000,000 | 2,000,000 |  |  |  |  |
Dilutive Securities Effect On Basic EPS, dilutive Restricted Stock Units, per diluted share | $ 0 | $ 0 | $ 0 | $ 0 |  |  |  |  |
DILUTED EARNINGS PER SHARE: |  |  |  |  |  |  |  |  |
Dilutive Securities, Effect on Basic Earnings Per Share, Options and Restrictive Stock Units | $ 0 | $ 0 | $ 0 | $ 0 |  |  |  |  |
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements | 2,000,000 | 2,000,000 | 2,000,000 | 2,000,000 |  |  |  |  |
Dilutive Securities Effect On Basic EPS, dilutive Restricted Stock Units, per diluted share | $ 0 | $ 0 | $ 0 | $ 0 |  |  |  |  |
Equity Unit Purchase Agreements |  |  |  |  |  |  |  |  |
EFFECT OF DILUTIVE SECURITIES |  |  |  |  |  |  |  |  |
Dilutive Securities Effect on Basic EPS, dilutive Equity Unit Purchase Agreements, per diluted share |  |  | $ 0 | $ (0.02) |  |  |  |  |
Incremental Common Shares Attributable to Dilutive Effect of Equity Unit Purchase Agreements |  |  | 0 | 7,000,000 |  |  |  |  |
Dilutive Securities, Effect on Basic Earnings Per Share, Dilutive Convertible Securities |  |  | $ 0 | $ 0 |  |  |  |  |
DILUTED EARNINGS PER SHARE: |  |  |  |  |  |  |  |  |
Incremental Common Shares Attributable to Dilutive Effect of Equity Unit Purchase Agreements |  |  | 0 | 7,000,000 |  |  |  |  |
Dilutive Securities Effect on Basic EPS, dilutive Equity Unit Purchase Agreements, per diluted share |  |  | $ 0 | $ (0.02) |  |  |  |  |
Dilutive Securities, Effect on Basic Earnings Per Share, Dilutive Convertible Securities |  |  | $ 0 | $ 0 |  |  |  |  |
Share-based Payment Arrangement [Member] |  |  |  |  |  |  |  |  |
DILUTED EARNINGS PER SHARE: |  |  |  |  |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount |  |  | 2,000,000 | 1,000,000 |  |  |  |  |

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