Financial Statement Presentation New Accounting Pronouncement Adopted (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($) agreement	Sep. 30, 2022 USD ($) Rate	Dec. 31, 2022 USD ($) agreement Rate	Dec. 31, 2021 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cash and Cash Equivalents, at Carrying Value	$ 1,765		$ 1,374
Restricted Cash and Cash Equivalents, Current	365		536
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	2,335	$ 2,034	2,087	$ 1,484
Accounts Receivable, Allowance for Credit Loss, Current	9		5
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease)	25	49
Accounts Receivable, Allowance for Credit Loss, Writeoff	(32)	(15)
Financing Receivable, Allowance for Credit Loss, Recovery	0	(1)
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation	(15)	(8)
Accounts and Financing Receivable, Allowance for Credit Loss	62	90	84	63
Loans and Leases Receivable, Allowance	24		26
Allowance for Doubtful Accounts, Premiums and Other Receivables		2
Preferred Stock, Value, Issued	838	838	838
Additional Paid in Capital	$ 6,449		6,688
Obligations Number Of Agreements	122
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 2,856
Secured Debt [Member] | Standby Letters of Credit [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Obligations Number Of Agreements | agreement	3
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 248
Accounts Payable and Accrued Liabilities
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Supplier Finance Program, Obligation, Current	$ 775		$ 662
Obligations Number Of Agreements | agreement	32		46
Accounts Payable and Accrued Liabilities | Supplier Finance Program [Domain]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Supplier Finance Program, Obligation, Current		607	$ 296
Accounts Payable and Accrued Liabilities | Minimum [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Supplier Finance Program, Obligation, Current			1
Accounts Payable and Accrued Liabilities | Maximum [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Supplier Finance Program, Obligation, Current		$ 69	$ 88
Accounts Payable and Accrued Liabilities | Weighted Average [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Debt, Weighted Average Interest Rate | Rate		7.37%	4.32%
Accounts Receivable [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts Receivable, Allowance for Credit Loss, Current	$ 8	$ 3	$ 4	3
Accounts Receivable, Allowance for Credit Loss, Writeoff	(12)	(9)
Financing Receivable, Allowance for Credit Loss, Recovery	(2)	(2)
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation	0	0
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	14	7
Mong Duong Subsidiary [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts Receivable, Allowance for Credit Loss, Current	26	29	28	30
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease)	0	0
Accounts Receivable, Allowance for Credit Loss, Writeoff	0	0
Financing Receivable, Allowance for Credit Loss, Recovery	(2)	(1)
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation	0	0
AES Argentina [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts Receivable, Allowance for Credit Loss, Current	16	37	31	23
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease)	0	22
Accounts Receivable, Allowance for Credit Loss, Writeoff	0	0
Financing Receivable, Allowance for Credit Loss, Recovery	0	0
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation	(15)	(8)
AES Southland [Domain] | Accounts Receivable [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts Receivable, Allowance for Credit Loss, Current	0	20
Other Entity [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts Receivable, Allowance for Credit Loss, Current	12	1	1	7
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease)	11	0
Accounts Receivable, Allowance for Credit Loss, Writeoff	0	(6)
Financing Receivable, Allowance for Credit Loss, Recovery	0	0
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation	0	0
AES Gilbert
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts Receivable, Allowance for Credit Loss, Current			$ 20	$ 0
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease)	0	20
Accounts Receivable, Allowance for Credit Loss, Writeoff	(20)	0
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation	$ 0	$ 0