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Debt - Non-Recourse Debt Narrative (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 14, 2022	Dec. 13, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Proceeds From Issuance Of Nonrecourse Debt	$ 690	$ 1,710
Loss on extinguishment of debt	(1)	(6)
Restricted Net Assets	1,700
Restricted Cash And Debt Service Reserves	416		$ 424
AES Brasil [Domain] \| Nonrecourse Debt [Member]
Debt Instrument [Line Items]
Proceeds From Issuance Of Nonrecourse Debt	169
Repayments of Long-term Debt	0
Loss on extinguishment of debt	0
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
Repayments of Long-term Debt	(500)
Loss on extinguishment of debt	1
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	$ 434
Credit Facility, Commitments Used	1,700
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 Development \| Senior Notes [Member] \| 6.55% Senior Notes Due 2047
Debt Instrument [Line Items]
Issued senior notes	37			$ 37
AES Clean Energy and sPower (co-borrowers) \| Revolving Credit Facilities, Joint and Several
Debt Instrument [Line Items]
Issued senior notes			2,500			$ 1,200
Line of Credit Facility, Increase (Decrease), Net			$ 1,300
Credit Facility, Commitments Used	$ 2,300