Debt - Non-Recourse Debt Narrative (Details) - USD ($) $ in Millions	3 Months Ended				9 Months Ended		21 Months Ended
	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Dec. 31, 2022	Dec. 14, 2022	Dec. 13, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Proceeds From Issuance Of Nonrecourse Debt					$ 1,784	$ 3,554
Loss on extinguishment of debt	$ 0		$ (1)		(1)	$ (8)
Restricted Net Assets	1,400				1,400		$ 1,400
Restricted Cash And Debt Service Reserves	369				369		369	$ 424
Restricted Cash Held for Insurance	91				91		91	56
AES Hispanola Holdings BV | Bridge Loan | JPMORGAN CHASE BANK N.A. LONDON BRANCH
Debt Instrument [Line Items]
Issued senior notes								$ 500
AES Hispanola Holdings BV | Nonrecourse Debt [Member]
Debt Instrument [Line Items]
Proceeds From Issuance Of Nonrecourse Debt					350
AES Hispanola Holdings BV | Nonrecourse Debt [Member] | JPMORGAN CHASE BANK N.A. LONDON BRANCH
Debt Instrument [Line Items]
Proceeds From Issuance Of Nonrecourse Debt				$ 450
AES Hispanola Holdings BV | Nonrecourse Debt [Member] | 350 Million Credit Agreement Due 2028
Debt Instrument [Line Items]
Loss on extinguishment of debt					1
AES Hispanola Holdings BV | Nonrecourse Debt [Member] | 350 Million Credit Agreement Due 2028 | BID
Debt Instrument [Line Items]
Proceeds From Issuance Of Nonrecourse Debt		$ 300
Issued senior notes		$ 350
Debt Instrument, Interest Rate, Stated Percentage		8.85%
Mercury Chile HoldCo LLC
Debt Instrument [Line Items]
Proceeds from Contributed Capital				196
Mercury Chile HoldCo LLC | Nonrecourse Debt [Member] | Bridge Loan
Debt Instrument [Line Items]
Proceeds From Issuance Of Nonrecourse Debt				350
Mercury Chile HoldCo LLC | Senior Notes [Member] | 6.5% senior notes due 2027
Debt Instrument [Line Items]
Issued senior notes				$ 360
Debt Instrument, Interest Rate, Stated Percentage				6.50%
AES Clean Energy Subsidiary | Revolving Credit Facilities, Joint and Several
Debt Instrument [Line Items]
Line of Credit Facility, Increase (Decrease), Net					1,400
Credit Facility, Commitments Used	2,700				2,700		2,700
AES Clean Energy Subsidiary | Nonrecourse Debt [Member]
Debt Instrument [Line Items]
Proceeds From Issuance Of Nonrecourse Debt					885
Colon | Nonrecourse Debt [Member] | JPMORGAN CHASE BANK N.A. LONDON BRANCH
Debt Instrument [Line Items]
Proceeds From Issuance Of Nonrecourse Debt				$ 50
Colon | Nonrecourse Debt [Member] | 350 Million Credit Agreement Due 2028 | BID
Debt Instrument [Line Items]
Proceeds From Issuance Of Nonrecourse Debt		$ 50
AES Clean Energy and sPower (co-issuers) | Senior Notes [Member] | 6.55% Senior Notes Due 2047
Debt Instrument [Line Items]
Issued senior notes									$ 647	$ 647
Debt Instrument, Interest Rate, Stated Percentage										6.55%
AES Clean Energy and sPower (co-issuers) | Senior Notes [Member] | 6.37% Senior Notes Due 2047
Debt Instrument [Line Items]
Issued senior notes	$ 246				$ 246		$ 246
Debt Instrument, Interest Rate, Stated Percentage	6.37%				6.37%		6.37%
AES Clean Energy and sPower (co-issuers) | Senior Notes [Member] | Master Indenture Notes
Debt Instrument [Line Items]
Issued senior notes	$ 893				$ 893		$ 893
AES Clean Energy Development | Senior Notes [Member] | Master Indenture Notes
Debt Instrument [Line Items]
Issued senior notes	252				252		252
Subordinated Liabilities, Period Increase (Decrease)					215
AES Clean Energy and sPower (co-borrowers) | Revolving Credit Facilities, Joint and Several
Debt Instrument [Line Items]
Issued senior notes	3,500				3,500		3,500				$ 1,200
Line of Credit Facility, Increase (Decrease), Net							2,300
Credit Facility, Commitments Used	$ 3,400				$ 3,400		$ 3,400