Financial Statement Presentation New Accounting Pronouncement Adopted (Details) $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($) agreement	Mar. 31, 2023 USD ($) Rate	Dec. 31, 2023 USD ($) agreement Rate	Dec. 31, 2022 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cash and Cash Equivalents, at Carrying Value	$ 1,994		$ 1,426
Restricted Cash and Cash Equivalents, Current	362		370
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	2,555	$ 2,077	1,990	$ 2,087
Accounts Receivable, Allowance for Credit Loss, Current	19		15
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease)	6	8
Accounts Receivable, Allowance for Credit Loss, Writeoff	(1)	(3)
Financing Receivable, Allowance for Credit Loss, Recovery	(2)	(2)
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation	(1)	(5)
Accounts and Financing Receivable, Allowance for Credit Loss	68	85	64	83
Preferred Stock, Value, Issued	0	838	838
Additional Paid in Capital	$ 7,068		6,355
Obligations Number Of Agreements	132
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 4,041
Secured Debt [Member] | Standby Letters of Credit [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Obligations Number Of Agreements | agreement	4
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 234
Accounts Payable and Accrued Liabilities
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Supplier Finance Program, Obligation, Current	$ 875		$ 974
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		725	$ 814
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		$ 96	$ 69
Accounts Payable and Accrued Liabilities | Weighted Average [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Debt, Weighted Average Interest Rate | Rate		7.60%	7.51%
Accounts Receivable [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts Receivable, Allowance for Credit Loss, Current	$ 19	$ 3	$ 15	3
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease)	4	2
Accounts Receivable, Allowance for Credit Loss, Writeoff	(1)	(3)
Financing Receivable, Allowance for Credit Loss, Recovery	(1)	(1)
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation	0	0
Mong Duong Subsidiary [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts Receivable, Allowance for Credit Loss, Current	25	29	26	28
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	(1)	(1)
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation	0	0
Accounts Receivable, Allowance for Credit Loss	25		26
AES Argentina [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts Receivable, Allowance for Credit Loss, Current	6	25	7	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	0	0
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation	(1)	(5)
Other Entity [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts Receivable, Allowance for Credit Loss, Current	18	8	$ 16	2
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease)	2	6
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	$ 0	0
AES Gilbert
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts Receivable, Allowance for Credit Loss, Current		20		$ 20
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease)		0
Accounts Receivable, Allowance for Credit Loss, Writeoff		0
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation		$ 0