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Debt - Non-Recourse Debt Narrative (Details)	3 Months Ended
	Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2024 USD ($)
Debt Instrument [Line Items]
Proceeds From Issuance Of Nonrecourse Debt	$ 1,293,000,000	$ 2,131,000,000
Loss on extinguishment of debt	(8,000,000)	(1,000,000)
Restricted Net Assets	822,000,000
Restricted Cash Held for Insurance	143,000,000		$ 155,000,000
Materiality Threshold for Sub Default to Trigger Cross Default	200,000,000
Supplier Finance Program, Obligation	605,000,000		917,000,000
Supplier Finance Program, guaranteed by Sub	115,000,000		371,000,000
Accounts Payable and Accrued Liabilities
Debt Instrument [Line Items]
Supplier Finance Program, Obligation	416,000,000		616,000,000
Supplier Finance Program, guaranteed by Parent	301,000,000		245,000,000
Minimum [Member] | Accounts Payable and Accrued Liabilities
Debt Instrument [Line Items]
Supplier Finance Program, Obligation	1,000,000		1,000,000
Maximum [Member] | Accounts Payable and Accrued Liabilities
Debt Instrument [Line Items]
Supplier Finance Program, Obligation	$ 75,000,000		$ 69,000,000
Weighted Average [Member] | Accounts Payable and Accrued Liabilities
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.54%		6.83%
Consolidated Variable Interest Entities [Member]
Debt Instrument [Line Items]
Restricted Cash	$ 580,000,000
Restricted Cash And Debt Service Reserves	813,000,000
Restricted Cash
Debt Instrument [Line Items]
Restricted Cash And Debt Service Reserves	444,000,000		$ 79,000,000
Debt service reserve
Debt Instrument [Line Items]
Restricted Cash And Debt Service Reserves	68,000,000		68,000,000
Nonrecourse Debt [Member]
Debt Instrument [Line Items]
Restricted Cash And Debt Service Reserves	512,000,000		147,000,000
Dominican Republic Renewables
Debt Instrument [Line Items]
Debt, Long-Term and Short-Term, Combined Amount	350,000,000
Mong Duong held-for-sale
Debt Instrument [Line Items]
Debt, Long-Term and Short-Term, Combined Amount	525,000,000
Disposal Group, Held-for-sale, Not Discontinued Operations [Member]
Debt Instrument [Line Items]
Income (Loss) from Individually Significant Component Disposed of or Held-for-Sale, Excluding Discontinued Operations, before Income Tax	32,000,000	22,000,000
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Dominican Republic Renewables
Debt Instrument [Line Items]
Income (Loss) from Individually Significant Component Disposed of or Held-for-Sale, Excluding Discontinued Operations, before Income Tax	6,000,000	(1,000,000)
Assets Carrying Amount Disclosure Nonrecurring	$ 116,000,000
Disposal Group Not Discontinued Operation Ownership Interest Sold	50.00%
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Mong Duong Subsidiary [Member]
Debt Instrument [Line Items]
Income (Loss) from Individually Significant Component Disposed of or Held-for-Sale, Excluding Discontinued Operations, before Income Tax	$ 26,000,000	$ 23,000,000
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Mong Duong held-for-sale
Debt Instrument [Line Items]
Assets Carrying Amount Disclosure Nonrecurring	$ 367,000,000
Disposal Group Not Discontinued Operation Ownership Interest Sold	51.00%
Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations | Mong Duong Subsidiary [Member]
Debt Instrument [Line Items]
Disposal Group Not Discontinued Operation Ownership Interest Sold	51.00%
Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Spinoff | Mong Duong held-for-sale
Debt Instrument [Line Items]
Long term Concession receivable	$ 934,000,000
AES Mexico Generation Holdings
Debt Instrument [Line Items]
Convertible Debt	129,000,000
Variable Rate [Domain] | Notes Payable to Banks
Debt Instrument [Line Items]
Non-recourse debt	773,000,000
AES Clean Energy Subsidiary | Revolving Credit Facilities, Joint and Several
Debt Instrument [Line Items]
Credit Facility, Commitments Used	3,400,000,000
AES Clean Energy Development | Revolving Credit Facilities, Joint and Several
Debt Instrument [Line Items]
Line of Credit Facility, Increase (Decrease), Net	444,000,000
Credit Facility, Commitments Used	$ 3,400,000,000
AES Clean Energy Development | Bellefield Financing Agreement due 2026 | Nonrecourse [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.30%
Credit Facility, Commitments Used	$ 526,000,000
Credit facility, commitments			1,700,000,000
AES Clean Energy Development | Nonrecourse Debt [Member] | Bellefield Financing Agreement due 2026
Debt Instrument [Line Items]
Credit facility, commitments	1,600,000,000		$ 2,400,000,000
AES Clean Energy Development | Senior Notes [Member] | Master Indenture Notes
Debt Instrument [Line Items]
Issued senior notes	1,400,000,000
AES Clean Energy and sPower (co-borrowers) | Revolving Credit Facilities, Joint and Several
Debt Instrument [Line Items]
Issued senior notes	3,800,000,000
AES Puerto Rico | Nonrecourse Debt [Member] | PR Series A Bond due 2026
Debt Instrument [Line Items]
Issued senior notes	$ 156,000,000
Debt Instrument, Interest Rate, Stated Percentage	6.625%
Preferred Shares Conversion Option	0.999
AES Puerto Rico | Nonrecourse Debt [Member] | PR Senior Secured Bonds due 2028
Debt Instrument [Line Items]
Issued senior notes	$ 112,000,000
Debt Instrument, Interest Rate, Stated Percentage	6.625%
AES Puerto Rico | Nonrecourse Debt [Member] | Preferred Shares in AES Guayama Holdings
Debt Instrument [Line Items]
Issued senior notes	$ 44,000,000
Debt Instrument, Interest Rate, Stated Percentage	3.125%
AES Puerto Rico | Nonrecourse Debt [Member] | PR Bridge Loan due 2026
Debt Instrument [Line Items]
Issued senior notes	$ 23,000,000
Debt Instrument, Basis Spread on Variable Rate	4.00%
AES Indiana | Nonrecourse Debt [Member] | AES Indiana FM Bonds due 2054
Debt Instrument [Line Items]
Issued senior notes	$ 650,000,000
Debt Instrument, Interest Rate, Stated Percentage	5.70%
AES Indiana | Nonrecourse Debt [Member] | IPALCO Notes due 2034
Debt Instrument [Line Items]
Issued senior notes	$ 400,000,000
Debt Instrument, Interest Rate, Stated Percentage	5.75%
AES Indiana | Nonrecourse Debt [Member] | IPL Term Loan Due 2024
Debt Instrument [Line Items]
Repayments of Debt	$ 300,000,000
AES Indiana | Nonrecourse Debt [Member] | AES Indiana Credit Agreement due 2027
Debt Instrument [Line Items]
Repayments of Debt	$ 350,000,000
AES Indiana | Nonrecourse Debt [Member] | IPALCO Senior Notes due 2025
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.70%
Repayments of Debt	$ 405,000,000
AES Andes | Nonrecourse [Member]
Debt Instrument [Line Items]
Proceeds from Issuance of Debt	450,000,000
AES Andes | 6.35% Senior notes due 2079 | Nonrecourse [Member]
Debt Instrument [Line Items]
Loss on extinguishment of debt	$ 3,000,000
Debt Instrument, Interest Rate, Stated Percentage	6.35%
Proceeds from Issuance of Debt	$ 228,000,000
AES Andes | Andes Senior Notes due 2032 | Nonrecourse [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.25%
Proceeds from Issuance of Debt	$ 400,000,000
AES Andes | Nonrecourse Debt [Member] | Andes Senior Notes due 2029
Debt Instrument [Line Items]
Proceeds From Issuance Of Nonrecourse Debt	$ 500,000,000
Debt Instrument, Interest Rate, Stated Percentage	6.30%
AES Andes | Nonrecourse Debt [Member] | Andes Senior Unsecured Notes due 2079
Debt Instrument [Line Items]
Redeemed notes	$ 100,000,000
AES Andes | Nonrecourse Debt [Member] | Andes Senior Unsecured Notes due 2025
Debt Instrument [Line Items]
Redeemed notes	$ 43,000,000
AES Andes | Senior Notes [Member] | 6.35% Senior notes due 2079
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.35%
AES Andes | Senior Notes [Member] | 5.00% Senior notes due 2025
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.00%
AES Puerto Rico Solar
Debt Instrument [Line Items]
Loan Guarentee	$ 861,000,000
Outstanding borrowings	$ 659,000,000
Project ownership	70.00%
AES Puerto Rico Solar | Nonrecourse [Member]
Debt Instrument [Line Items]
Proceeds from Issuance of Debt	$ 669,000,000
Dominican Republic Renewables
Debt Instrument [Line Items]
Discontinued Operation, Equity Method Investment Retained after Disposal, Ownership Interest before Disposal	50.00%

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The current portion of the entity's non-recourse debt. Non-recourse debt is secured by the capital stock, physical assets, contracts and cash flows of the related subsidiary. The risk is limited to the respective subsidiary business and is without recourse to the Parent Company and other subsidiaries.

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Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company.

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