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Redeemable Stocks of Subsidiaries (Details) - USD ($) |  |  |  | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2026 | Apr. 30, 2025 | Apr. 04, 2025 | Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025 | Dec. 31, 2025 | Mar. 31, 2025 | Dec. 31, 2024
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |
Redeemable Noncontrolling Interest, Equity, Carrying Amount |  |  |  | $ 3,052,000,000 |  | $ 3,052,000,000 |  | $ 2,824,000,000 |  |
Temporary Equity, Other Charges |  |  |  | 0 | $ 0 | (1,000,000) | $ 0 |  |  |
Temporary equity, Issuance of preferred shares in subsidiaries |  |  |  | 0 | 440,000,000 | 112,000,000 | 440,000,000 |  |  |
Temporary Equity, Interest in Subsidiary Earnings |  |  |  | 63,000,000 | 168,000,000 | 63,000,000 | 168,000,000 |  |  |
Temporary Equity, Stock Issued During Period, Value, New Issues |  |  |  | 194,000,000 | 687,000,000 | 194,000,000 | 687,000,000 |  |  |
Reclassifications of Temporary to Permanent Equity |  |  |  | 0 | (18,000,000) | 0 | (56,000,000) |  |  |
Temporary Equity, Including Noncontrolling Interest | $ 2,895,000,000 |  |  | 3,052,000,000 | 2,179,000,000 | 3,052,000,000 | 2,179,000,000 | 2,824,000,000 | $ 899,000,000 | $ 938,000,000
Temporary Equity, Net Income |  |  |  | (36,000,000) | 3,000,000 | (37,000,000) | 33,000,000 |  |  |
Temporary Equity, Adjustments to redemption value of redeemable stock of subsidiaries |  |  |  | 0 | 10,000,000 |  | 10,000,000 |  |  |
Redeemable Preferred Stock Dividends |  |  |  | (64,000,000) | (10,000,000) | (103,000,000) | (41,000,000) |  |  |
IPALCO Enterprises, Inc. [Member] |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount |  |  |  | 1,006,000,000 |  | 1,006,000,000 |  | 1,003,000,000 |  |
AES Clean Energy Development |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount |  |  |  | 273,000,000 |  | 273,000,000 |  | 228,000,000 |  |
AES Ohio |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount |  |  |  | 644,000,000 |  | 644,000,000 |  | 595,000,000 |  |
Temporary Equity, Stock Issued During Period, Value, New Issues |  |  | $ 538,000,000 |  |  |  |  |  |  |
Sale of Stock, Percentage of Ownership before Transaction |  |  | 30.00% |  |  |  |  |  |  |
Proceeds from sale of ownership interest |  |  | $ 544,000,000 |  |  |  |  |  |  |
Adjustments to Additional Paid in Capital, Other |  |  | $ 188,000,000 |  |  |  |  |  |  |
AES Global Insurance |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount |  |  |  | 448,000,000 | 456,000,000 | 448,000,000 | 456,000,000 | 472,000,000 |  |
Temporary Equity, Adjustments to redemption value of redeemable stock of subsidiaries |  |  |  |  | 10,000,000 |  |  |  |  |
Sale of Stock, Percentage of Ownership before Transaction |  | 17.50% |  |  |  |  |  |  |  |
Proceeds from Sales of Business, Affiliate and Productive Assets |  | $ 450,000,000 |  |  |  |  |  |  |  |
Bellefield |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount |  |  |  | 262,000,000 |  | 262,000,000 |  | 249,000,000 |  |
AES DevCO HoldCo |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount |  |  |  | 209,000,000 |  | 209,000,000 |  | 199,000,000 |  |
Desarrollos Renovables |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount |  |  |  | $ 210,000,000 |  | $ 210,000,000 |  | $ 78,000,000 |  |
Sale of Stock, Percentage of Ownership before Transaction | 49.00% |  |  |  |  |  |  |  |  |
Proceeds from sale of ownership interest | $ 112,000,000 |  |  |  |  |  |  |  |  |
Desarrollos Renovables | AES Pacifico |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Parent |  |  |  | 51.00% |  | 51.00% |  |  |  |
AES Indiana Pike County BESS |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |
Reclassifications of Temporary to Permanent Equity |  |  |  |  | $ 38,000,000 |  |  |  |  |
AES Clean Energy Subsidiary |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |
Temporary Equity, Stock Issued During Period, Value, New Issues |  |  |  |  |  | $ 194,000,000 | 149,000,000 |  |  |
Reclassifications of Temporary to Permanent Equity |  |  |  |  |  |  | $ 18,000,000 |  |  |
AES AGIC Holdings |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |
Sale of Stock, Percentage of Ownership before Transaction |  | 18.00% |  |  |  |  |  |  |  |
Incentive Distribution, Distribution |  | $ 146,000,000 |  |  |  |  |  |  |  |
Cash Available for Distributions |  | $ 199,000,000 |  |  |  |  |  |  |  |
AES Global Insurance and AGIC, Combined |  |  |  |  |  |  |  |  |  |
Temporary Equity [Line Items] |  |  |  |  |  |  |  |  |  |
Sale of Stock, Percentage of Ownership before Transaction |  | 32.40% |  |  |  |  |  |  |  |

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- Definition As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477657/942-210-S45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478478/942-210-S50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(18)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(27)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480657/210-10-S50-13 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(27)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section S45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479887/480-10-S45-2 Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section S50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479857/480-10-S50-3 Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section S45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479887/480-10-S45-3 Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3A -Subparagraph (24) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480244/480-10-S99-3A Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (01)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480244/480-10-S99-1 + Details
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- Definition Carrying amount, attributable to parent and noncontrolling interests, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. 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