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Equity Equity Transactions with Noncontrolling Interests (Details) - USD ($) $ in Millions		3 Months Ended		12 Months Ended
	Apr. 14, 2025	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024	Dec. 31, 2023
Noncontrolling Interest [Line Items]
Contributions from noncontrolling interests		$ 73	$ 26
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		7,725		$ 7,704
Payments to Noncontrolling Interests		84	23
NET INCOME ATTRIBUTABLE TO THE AES CORPORATION		46	432
Change from net income attributable to The AES Corporation and transfers (to) from noncontrolling interests		$ 31	433
AES Gener
Noncontrolling Interest [Line Items]
Preferred Stock, Participation Rights		12 million
Cochrane Subsidiary [Member]
Noncontrolling Interest [Line Items]
Sale of Stock, Percentage of Ownership after Transaction	96.70%
Sale of Stock, Percentage of Ownership before Transaction	40.00%
Chile Renovables SpA
Noncontrolling Interest [Line Items]
Sale of Stock, Consideration Received on Transaction		$ 14		40
Adjustments to Additional Paid in Capital, Other		(3)	(13)
Noncontrolling Interest, Increase from Subsidiary Equity Issuance			53
Noncontrolling Interest, Change in Redemption Value		$ 17
Proceeds from Issuance or Sale of Equity					$ 275
Chile Renovables SpA | Global Infrastructure Management
Noncontrolling Interest [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners		49.00%
AES Clean Energy Development
Noncontrolling Interest [Line Items]
Noncontrolling Interest, Increase from Subsidiary Equity Issuance		$ 82
AES Indiana
Noncontrolling Interest [Line Items]
Noncontrolling Interest, Increase from Subsidiary Equity Issuance		150
Additional Paid-in Capital [Member]
Noncontrolling Interest [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		5,888	7,068	$ 5,913	$ 6,355
Sales to noncontrolling interests		$ (15)	$ 1

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