Equity Equity - Net Income (Loss) Attributable to The AES Corporation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Equity [Abstract]
Net income (loss) attributable to The AES Corporation	$ 249	$ (546)	$ (409)
Transfers from the noncontrolling interest:
Net transfers (to) from noncontrolling interest	109	0	(16)
Change from net income (loss) attributable to The AES Corporation and transfers (to) from noncontrolling interests	358	(546)	(425)
Additional Paid-in Capital [Member]
Transfers from the noncontrolling interest:
Increase (decrease) in The AES Corporation's paid-in capital for sale of subsidiary shares	85	78	(7)
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	$ 24	$ (78)	$ (9)