Fair Value (Nonrecurring Measurements) (Details) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2024 ARS ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Asset Impairment Charges	$ 230		$ 174		$ 276		$ 194
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs	(175)	$ (175)	(290)	$ (67)	(175)		(290)	$ (220)	$ (31)
Corporate, Non-Segment \| Corporate Other And Other Eliminations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Adjusted EBITDA	12		13		20		12
Operating Segments [Member] \| Renewables
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Adjusted EBITDA	142		166		244		290
Operating Segments [Member] \| Utilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Adjusted EBITDA	214		148		396		310
Operating Segments [Member] \| Energy Infrastructure
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Adjusted EBITDA	310		282		670		645
Operating Segments [Member] \| New Energy Technologies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Adjusted EBITDA	(14)		(13)		(31)		(39)
Commodity Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs	(71)	(79)	(78)	(69)	(71)		(78)	$ (110)	$ (47)
Other Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs	4				4
Commodity Option
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs	(75)				(75)
Jordan (IPP1 & IPP4)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Selling Expense				5			6
Mong Duong held-for-sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Selling Expense					5
AES Brasil [Domain]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Selling Expense					13
Weighted Average [Member] \| Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, Commodity prices						$ 62.15
Maximum [Member] \| Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, Commodity prices						121.53
Minimum [Member] \| Commodity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, Commodity prices						$ 12.39
Long Lived Assets Held And Used [Member] \| Maritza
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Asset Impairment Charges							137
Long Lived Assets Held And Used [Member] \| Jordan (IPP1 & IPP4)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Asset Impairment Charges	0		15	14	0		29
Long Lived Assets Held And Used [Member] \| Norgener
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Asset Impairment Charges	0		137		0		137
Long Lived Assets Held And Used [Member] \| AES Renewable Holdings
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Asset Impairment Charges	0		18		0		18
Long Lived Assets Held And Used [Member] \| Mong Duong held-for-sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Asset Impairment Charges	6	37
Long Lived Assets Held And Used [Member] \| AES Brasil [Domain]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Asset Impairment Charges		217
Long Lived Assets Held And Used [Member] \| Renewables
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Asset Impairment Charges							18
Long Lived Assets Held And Used [Member] \| Estimate of Fair Value Measurement [Member] \| Maritza
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring			196				196
Long Lived Assets Held And Used [Member] \| Estimate of Fair Value Measurement [Member] \| Maritza \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring			0				0
Long Lived Assets Held And Used [Member] \| Estimate of Fair Value Measurement [Member] \| Maritza \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring			0				0
Long Lived Assets Held And Used [Member] \| Estimate of Fair Value Measurement [Member] \| Maritza \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring			24				24
Long Lived Assets Held And Used [Member] \| Estimate of Fair Value Measurement [Member] \| Jordan (IPP1 & IPP4)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring			179	179			179
Long Lived Assets Held And Used [Member] \| Estimate of Fair Value Measurement [Member] \| Jordan (IPP1 & IPP4) \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring			0	0			0
Long Lived Assets Held And Used [Member] \| Estimate of Fair Value Measurement [Member] \| Jordan (IPP1 & IPP4) \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring			170	170			170
Long Lived Assets Held And Used [Member] \| Estimate of Fair Value Measurement [Member] \| Jordan (IPP1 & IPP4) \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring			0	$ 0			0
Long Lived Assets Held And Used [Member] \| Estimate of Fair Value Measurement [Member] \| Mong Duong held-for-sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring	390	450			390
Long Lived Assets Held And Used [Member] \| Estimate of Fair Value Measurement [Member] \| Mong Duong held-for-sale \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring	0	0			0
Long Lived Assets Held And Used [Member] \| Estimate of Fair Value Measurement [Member] \| Mong Duong held-for-sale \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring	389	413			389
Long Lived Assets Held And Used [Member] \| Estimate of Fair Value Measurement [Member] \| Mong Duong held-for-sale \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring	0	0			0
Long Lived Assets Held And Used [Member] \| Estimate of Fair Value Measurement [Member] \| AES Brasil [Domain]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring		1,556
Long Lived Assets Held And Used [Member] \| Estimate of Fair Value Measurement [Member] \| AES Brasil [Domain] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring		0
Long Lived Assets Held And Used [Member] \| Estimate of Fair Value Measurement [Member] \| AES Brasil [Domain] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring		1,352
Long Lived Assets Held And Used [Member] \| Estimate of Fair Value Measurement [Member] \| AES Brasil [Domain] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring		$ 0
Long Lived Assets Held And Used [Member] \| Estimate of Fair Value Measurement [Member] \| Renewables
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring			29				29
Long Lived Assets Held And Used [Member] \| Estimate of Fair Value Measurement [Member] \| Renewables \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring			0				0
Long Lived Assets Held And Used [Member] \| Estimate of Fair Value Measurement [Member] \| Renewables \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring			0				0
Long Lived Assets Held And Used [Member] \| Estimate of Fair Value Measurement [Member] \| Renewables \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring			11				11
Long Lived Assets held and Used \| Estimate of Fair Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring	35				35
Long Lived Assets held and Used \| Estimate of Fair Value Measurement [Member] \| Norgener \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring	24		24		24		24
Long Lived Assets held and Used \| Estimate of Fair Value Measurement [Member] \| AES Renewable Holdings \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring	$ 11				$ 11
Long Lived Assets held and Used \| Estimate of Fair Value Measurement [Member] \| Renewables \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Carrying Amount Disclosure Nonrecurring			$ 11				$ 11
Measurement Input, Long-term Revenue Growth Rate [Member] \| Valuation, Income Approach [Member] \| Property, Plant and Equipment [Member] \| Weighted Average [Member] \| Norgener
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurement Inputs, Nonrecurring					85.00%	85.00%
Measurement Input, Long-term Revenue Growth Rate [Member] \| Valuation, Income Approach [Member] \| Property, Plant and Equipment [Member] \| Weighted Average [Member] \| Renewables
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurement Inputs, Nonrecurring					1.00%	1.00%
Measurement Input, Long-term Revenue Growth Rate [Member] \| Valuation, Income Approach [Member] \| Property, Plant and Equipment [Member] \| Maximum [Member] \| Norgener
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurement Inputs, Nonrecurring					994.00%	994.00%
Measurement Input, Long-term Revenue Growth Rate [Member] \| Valuation, Income Approach [Member] \| Property, Plant and Equipment [Member] \| Maximum [Member] \| Renewables
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurement Inputs, Nonrecurring					44.00%	44.00%
Measurement Input, Long-term Revenue Growth Rate [Member] \| Valuation, Income Approach [Member] \| Property, Plant and Equipment [Member] \| Minimum [Member] \| Norgener
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurement Inputs, Nonrecurring					(90.00%)	(90.00%)
Measurement Input, Long-term Revenue Growth Rate [Member] \| Valuation, Income Approach [Member] \| Property, Plant and Equipment [Member] \| Minimum [Member] \| Renewables
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurement Inputs, Nonrecurring					(42.00%)	(42.00%)
Measurement Input, Discount Rate [Member] \| Valuation, Income Approach [Member] \| Property, Plant and Equipment [Member] \| Weighted Average [Member] \| Renewables
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurement Inputs, Nonrecurring					9.00%	9.00%
Measurement Input, Variable Margin \| Valuation, Income Approach [Member] \| Property, Plant and Equipment [Member] \| Weighted Average [Member] \| Norgener
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurement Inputs, Nonrecurring					16.00%	16.00%
Measurement Input, Variable Margin \| Valuation, Income Approach [Member] \| Property, Plant and Equipment [Member] \| Maximum [Member] \| Norgener
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurement Inputs, Nonrecurring					276.00%	276.00%
Measurement Input, Variable Margin \| Valuation, Income Approach [Member] \| Property, Plant and Equipment [Member] \| Minimum [Member] \| Norgener
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurement Inputs, Nonrecurring					(75.00%)	(75.00%)