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Redeemable Stocks of Subsidiaries (Details) - USD ($) $ in Millions				3 Months Ended			9 Months Ended
	Aug. 05, 2025	Apr. 30, 2025	Apr. 04, 2025	Sep. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2024	Dec. 31, 2023
Temporary Equity [Line Items]
Redeemable Noncontrolling Interest, Equity, Carrying Amount				$ 2,122			$ 2,122			$ 938
Temporary Equity, Interest in Subsidiary Earnings				0		$ 0	168	$ 71
Temporary Equity, Stock Issued During Period, Value, New Issues				2		67	689	155
Temporary equity, Issuance of preferred shares in subsidiaries				77		0	517	0
Reclassifications of Temporary to Permanent Equity				(51)		(62)	(107)	(732)
Redeemable Preferred Stock Dividends				(23)		(17)	(64)	(42)
Temporary Equity, Adjustments to redemption value of redeemable stock of subsidiaries				7		0	17	0
Temporary Equity, Including Noncontrolling Interest				2,122		905	2,122	905	$ 2,179	938	$ 901	$ 1,464
Temporary Equity, Net Income				(65)		16	(32)	(83)
Temporary Equity, Adjustments to redemption value of redeemable stock of subsidiaries				7		0	17	0
Other Comprehensive Income (Loss)
Temporary Equity [Line Items]
Temporary Equity, Other Charges				(4)		$ 0	(4)	72
IPALCO Enterprises, Inc. [Member]
Temporary Equity [Line Items]
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount				956			956			835
AES Clean Energy Development
Temporary Equity [Line Items]
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount				39			39			65
Reclassifications of Temporary to Permanent Equity								577
AES Indiana Pike County BESS
Temporary Equity [Line Items]
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount				0			0			38
Reclassifications of Temporary to Permanent Equity					$ 38
AES Ohio
Temporary Equity [Line Items]
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount				589			589			0
Temporary Equity, Stock Issued During Period, Value, New Issues			$ 538
Sale of Stock, Percentage of Ownership before Transaction			30.00%
Temporary Equity, Adjustments to redemption value of redeemable stock of subsidiaries							7
Adjustments to Additional Paid in Capital, Other			$ 188
Proceeds from sale of ownership interest			$ 544
Temporary Equity, Adjustments to redemption value of redeemable stock of subsidiaries							7
AES AGIC Holdings
Temporary Equity [Line Items]
Sale of Stock, Percentage of Ownership before Transaction		18.00%
Incentive Distribution, Distribution		$ 146
Cash Available for Distributions		199
AES Global Insurance
Temporary Equity [Line Items]
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount				464			464			0
Proceeds from Sales of Business, Affiliate and Productive Assets		$ 450
Sale of Stock, Percentage of Ownership before Transaction		17.50%
Temporary Equity, Adjustments to redemption value of redeemable stock of subsidiaries							10
Temporary Equity, Adjustments to redemption value of redeemable stock of subsidiaries							10
AES Global Insurance and AGIC, Combined
Temporary Equity [Line Items]
Sale of Stock, Percentage of Ownership before Transaction		32.40%
AES Clean Energy Subsidiary
Temporary Equity [Line Items]
Temporary Equity, Stock Issued During Period, Value, New Issues							152	172
Reclassifications of Temporary to Permanent Equity							69	$ 155
Adjustments to Additional Paid in Capital, Other				(42)
Desarrollos Renovables
Temporary Equity [Line Items]
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount				$ 74			$ 74			$ 0
Sale of Stock, Percentage of Ownership before Transaction	49.00%
Proceeds from sale of ownership interest	$ 77
Desarrollos Renovables | AES Pacifico
Temporary Equity [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent				51.00%			51.00%

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