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Redeemable Stock of Subsidiaries (Narrative) (Details) $ in Millions | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2022 USD ($) series | Dec. 31, 2021 USD ($) | Sep. 30, 2022 | Sep. 13, 2021 | Jun. 30, 2021 USD ($) | Mar. 31, 2021 | Dec. 31, 2020 USD ($)
Temporary Equity [Line Items] |  |  |  |  |  |  |
Temporary Equity, Accretion to Redemption Value | $ 0 | $ 4 |  |  |  |  |
Redeemable Preferred Stock Dividends | (64) | 0 |  |  |  |  |
Temporary equity carrying amount | 1,321 | 1,257 |  |  |  |  | $ 872
Temporary Equity, Stock Issued During Period, Value, New Issues | 168 | 0 |  |  |  |  |
Temporary Equity, Net Income | (87) | (6) |  |  |  |  |
Temporary Equity, Interest in Subsidiary Earnings | $ 67 | 579 |  |  |  |  |
Potengi |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Parent | 35.50% |  |  |  |  |  |
AIMCo |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Temporary equity carrying amount |  |  |  |  | $ 81 |  |
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners |  |  | 25.00% |  |  | 25.00% |
Colon |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners |  |  |  | 49.90% |  |  |
Noncontrolling Interest [Member] |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Temporary Equity, Other Changes | $ (60) | (211) |  |  |  |  |
Colon [Domain] |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Redeemable noncontrolling interest, percentage acquired by parent |  |  |  | 49.90% |  |  |
IPALCO Enterprises, Inc. [Member] |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount | 782 | 700 |  |  |  |  |
IPL Subsidiary |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Redeemable Noncontrolling Interest, Equity, Preferred, Carrying Amount | $ 0 | 60 |  |  |  |  |
Number of preferred stock series | series | 5 |  |  |  |  |  |
AES Clean Energy |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Redeemable Noncontrolling Interest, Equity, Preferred, Carrying Amount | $ 436 | 497 |  |  |  |  |
CDPQ |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Limited Partners' Contributed Capital | 77 |  |  |  |  |  |
Temporary Equity, Interest in Subsidiary Earnings | 48 | 34 |  |  |  |  |
AES Clean Energy Development |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Redeemable Noncontrolling Interest, Equity, Preferred, Carrying Amount | 86 | 0 |  |  |  |  |
Temporary Equity, Stock Issued During Period, Value, New Issues | 157 |  |  |  |  |  |
Potengi |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Redeemable Noncontrolling Interest, Equity, Preferred, Carrying Amount | $ 17 | 0 |  |  |  |  |
Sale of Stock, Description of Transaction | 24 |  |  |  |  |  |
Sale of Stock, Consideration Received on Transaction | $ 12 |  |  |  |  |  |
Other Comprehensive Income (Loss) [Member] |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |
Temporary Equity, Other Changes | $ 40 | $ 19 |  |  |  |  |

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