Credit Losses (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
Accounts Receivable, Allowance for Credit Loss, Current	$ 19		$ 15
Accounts and Financing Receivable, Allowance for Credit Loss	68	$ 85	64	$ 83
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)
Mong Duong Subsidiary [Member]
Financing Receivable, Allowance for Credit Loss [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
AES Argentina [Member]
Financing Receivable, Allowance for Credit Loss [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)
AES Gilbert
Financing Receivable, Allowance for Credit Loss [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
Other Entity [Member]
Financing Receivable, Allowance for Credit Loss [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
Accounts Receivable [Member]
Financing Receivable, Allowance for Credit Loss [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