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Equity (Transactions with Noncontrolling Interests) (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended								6 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2024	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Noncontrolling Interest [Line Items]
Gain (Loss) on Disposition of Business	$ (1)	$ 1							$ 44	$ 43		$ 351	$ 134	$ (9)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(1,600)	(1,416)		$ (1,514)					(1,416)	(1,600)		(766)	(1,514)	(1,640)	$ (2,220)
Sale of Stock, Consideration Received on Transaction					$ 63
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent												23
Contributions from noncontrolling interests									97	137		222	102	$ 233
Retained Earnings (Accumulated Deficit)	(174)	(678)		$ (1,386)					(678)	$ (174)		293	$ (1,386)
AES Brasil | Private Placement
Noncontrolling Interest [Line Items]
Sale of Stock, Number of Shares Issued in Transaction											54
AES Brasil [Domain]
Noncontrolling Interest [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent											47.40%
AES Andes
Noncontrolling Interest [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners				99.40%									99.40%
Ownership interest acquired in subsidiary				1.30%									1.30%
AES Southland [Domain]
Noncontrolling Interest [Line Items]
Adjustments to Additional Paid in Capital, Other													$ 94
Sale of Stock, Percentage of Ownership after Transaction													50.10%
Sale of Stock, Consideration Received on Transaction													$ 157
Stockholders' Equity, Period Increase (Decrease)													$ 91
Sale of Stock, Description of Transaction													14.9	14.9
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent													$ 3
Chile Renovables SpA
Noncontrolling Interest [Line Items]
Sale of Stock, Consideration Received on Transaction												77
Sale of Stock, Description of Transaction						49
Proceeds from Issuance or Sale of Equity												275
AES Andes
Noncontrolling Interest [Line Items]
Adjustments to Additional Paid in Capital, Other													$ 96
Sale of Stock, Percentage of Ownership before Transaction													67.10%
Sale of Stock, Percentage of Ownership after Transaction														98.10%
Sale of Stock, Consideration Received on Transaction				$ 172									$ 522
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent													76
Investment Owned, at Cost				$ 22									22
AES Brasil
Noncontrolling Interest [Line Items]
Gain (Loss) on Disposition of Business												312
Adjustments to Additional Paid in Capital, Other											$ 10
Stockholders' Equity, Period Increase (Decrease)											98
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent											$ 3
AES Brasil | Private Placement
Noncontrolling Interest [Line Items]
Subsidiary or Equity Method Investee, Cumulative Number of Shares Issued for All Transactions				107							116
Sale of Stock, Number of Shares Issued in Transaction											53
AES Renewable Holdings
Noncontrolling Interest [Line Items]
Sales to noncontrolling interests												263	124	$ 88
Adjustments to Additional Paid in Capital, Other												34
Proceeds from Issuance or Sale of Equity												143
Noncontrolling Interest, Change in Redemption Value												45
Ventus Wind Complex [Member]
Noncontrolling Interest [Line Items]
Sale of Stock, Percentage of Ownership after Transaction					35.80%
Sale of Stock, Description of Transaction					3.5
Los Olmos
Noncontrolling Interest [Line Items]
Adjustments to Additional Paid in Capital, Other							$ 12
Sale of Stock, Consideration Received on Transaction							80
Noncontrolling Interest, Increase from Subsidiary Equity Issuance							$ (68)
Andes Solar 2A
Noncontrolling Interest [Line Items]
Adjustments to Additional Paid in Capital, Other								$ 9
Sale of Stock, Consideration Received on Transaction								37
Noncontrolling Interest, Increase from Subsidiary Equity Issuance								$ (28)
Campo Lindo
Noncontrolling Interest [Line Items]
Adjustments to Additional Paid in Capital, Other				$ (9)
Sale of Stock, Consideration Received on Transaction				50
Noncontrolling Interest, Increase from Subsidiary Equity Issuance				(59)
Bolero Solar Park
Noncontrolling Interest [Line Items]
Adjustments to Additional Paid in Capital, Other				1
Sale of Stock, Consideration Received on Transaction				58
Noncontrolling Interest, Increase from Subsidiary Equity Issuance				(57)
Andes Solar 2b
Noncontrolling Interest [Line Items]
Adjustments to Additional Paid in Capital, Other				11
Sale of Stock, Consideration Received on Transaction				156
Noncontrolling Interest, Increase from Subsidiary Equity Issuance				$ (145)
AES Dominicana Renewable Energy
Noncontrolling Interest [Line Items]
Adjustments to Additional Paid in Capital, Other												$ 73
Sale of Stock, Percentage of Ownership after Transaction												65.00%
Sale of Stock, Consideration Received on Transaction												$ 192
Stockholders' Equity, Period Increase (Decrease)												$ 74
Sale of Stock, Description of Transaction												20
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent												$ (1)
Colon
Noncontrolling Interest [Line Items]
Adjustments to Additional Paid in Capital, Other												$ 31
Sale of Stock, Percentage of Ownership after Transaction												65.00%
Sale of Stock, Consideration Received on Transaction												$ 146
Stockholders' Equity, Period Increase (Decrease)												$ 43
Sale of Stock, Description of Transaction												35
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent												$ (12)
IPL Subsidiary [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest, Change in Redemption Value									$ 47			79
AES Panama
Noncontrolling Interest [Line Items]
Noncontrolling Interest, Increase from Subsidiary Equity Issuance												$ (42)
AES Panama | Grupo Energia Gas Panama
Noncontrolling Interest [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners												49.00%
AES Clean Energy Development
Noncontrolling Interest [Line Items]
Sales to noncontrolling interests												$ 603	1,039	230
Noncontrolling Interest, Increase from Subsidiary Equity Issuance												(159)
AES Brasiliana
Noncontrolling Interest [Line Items]
Adjustments to Additional Paid in Capital, Other												304
Noncontrolling Interest, Change in Redemption Value												498
Mesamavida
Noncontrolling Interest [Line Items]
Adjustments to Additional Paid in Capital, Other			$ (11)
Sale of Stock, Consideration Received on Transaction			40
Noncontrolling Interest, Increase from Subsidiary Equity Issuance			$ (51)
San Matias and Andes Solar IV projects
Noncontrolling Interest [Line Items]
Adjustments to Additional Paid in Capital, Other												3
Noncontrolling Interest, Change in Redemption Value												74
AES Puerto Rico Solar
Noncontrolling Interest [Line Items]
Sale of Stock, Percentage of Ownership before Transaction									30.00%
Sale of Stock, Consideration Received on Transaction									$ 35
Additional Paid-in Capital [Member]
Noncontrolling Interest [Line Items]
Gain (Loss) on Disposition of Business												14
Sales to noncontrolling interests	(7)	$ (9)										(19)	85	78
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	$ (2)											$ 802	$ (24)	$ 78

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