Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Mar. 31, 2022
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Preferred Stock , Convertible, Initial Conversion Rate				$ 31.5428
Preferred Stock, Convertible, Conversion Price				$ 31.70
Corporate Unit, Notional Value		$ 1,043,000,000		$ 1,043,000,000
Preferred Stock, Value, Issued	$ 0	$ 838,000,000	$ 838,000,000
Income from continuing operations attributable to The AES Corporation common stockholders, net of tax	$ 0.63	$ 0.22
Increase in redemption value of redeemable stock of subsidiaries, per basic share	$ (0.01)	$ 0
Increase in redemption value of redeemable stock of subsidiaries	$ (6,000,000)	$ 0
Net income (loss) available to common stockholders, basic per share	$ 0.62	$ 0.22
Net Income (Loss) Available to Common Stockholders, Basic	$ 426,000,000	$ 151,000,000
Weighted Average Number of Shares Outstanding, Basic	690	669
BASIC EARNINGS PER SHARE
Income from continuing operations attributable to The AES Corporation common stockholders (Income)	$ 432,000,000	$ 151,000,000
Income from continuing operations attributable to The AES Corporation common stockholders (Shares)	690	669
Income from continuing operations attributable to The AES Corporation common stockholders (Per Share)	$ 0.63	$ 0.22
DILUTED EARNINGS PER SHARE:
Income from continuing operations, diluted	$ 426,000,000	$ 151,000,000
Weighted average number of shares outstanding, diluted	712	712
Income from continuing operations, per diluted share	$ 0.60	$ 0.21
Share-based Payment Arrangement, Option
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dilutive Securities, Effect on Basic Earnings Per Share, Options and Restrictive Stock Units	$ 0	$ 0
Dilutive Securities Effect On Basic EPS, dilutive Stock Options, per diluted share	$ 0	$ 0
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	0	1
EFFECT OF DILUTIVE SECURITIES
Dilutive Securities, Effect on Basic Earnings Per Share, Options and Restrictive Stock Units	$ 0	$ 0
Dilutive Securities Effect On Basic EPS, dilutive Stock Options, per diluted share	$ 0	$ 0
Restricted stock units (Shares)	0	1
Restricted Stock Units (RSUs) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dilutive Securities, Effect on Basic Earnings Per Share, Options and Restrictive Stock Units	$ 0	$ 0
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	2	2
Dilutive Securities Effect On Basic EPS, dilutive Restricted Stock Units, per diluted share	$ 0	$ 0
EFFECT OF DILUTIVE SECURITIES
Dilutive Securities, Effect on Basic Earnings Per Share, Options and Restrictive Stock Units	$ 0	$ 0
Restricted stock units (Shares)	2	2
Dilutive Securities Effect On Basic EPS, dilutive Restricted Stock Units, per diluted share	$ 0	$ 0
Equity Unit Purchase Agreements
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Incremental Common Shares Attributable to Dilutive Effect of Equity Unit Purchase Agreements	20	40
Dilutive Securities Effect on Basic EPS, dilutive Equity Unit Purchase Agreements, per diluted share	$ (0.02)	$ (0.01)
Dilutive Securities, Effect on Basic Earnings Per Share, Dilutive Convertible Securities	$ 0	$ 0
EFFECT OF DILUTIVE SECURITIES
Dilutive Securities Effect on Basic EPS, dilutive Equity Unit Purchase Agreements, per diluted share	$ (0.02)	$ (0.01)
Incremental Common Shares Attributable to Dilutive Effect of Equity Unit Purchase Agreements	20	40
Dilutive Securities, Effect on Basic Earnings Per Share, Dilutive Convertible Securities	$ 0	$ 0
Share-based Payment Arrangement [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	2	1