Acquisitions and Dispositions (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Sep. 30, 2023
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Business Combination, Consideration Transferred				$ 28,000,000
Gain (Loss) on Disposition of Business		$ 134,000,000	$ (9,000,000)	(1,683,000,000)
Proceeds from Divestiture of Businesses and Interests in Affiliates		254,000,000	1,000,000	95,000,000
Income (loss) from continuing operations, net of tax		242,000,000	(546,000,000)	(413,000,000)
Dispositions and Held-for-Sales Businesses
Sale of Stock, Consideration Received on Transaction	$ 63,000,000
Asset Retirement Obligation, Revision of Estimate		(35,000,000)	35,000,000
Goodwill, Written off Related to Sale of Business Unit		2,000,000
Goodwill		348,000,000	362,000,000	1,177,000,000
Property, Plant and Equipment, Net		29,958,000,000	$ 23,039,000,000
Mong Duong held-dfor-sale [Member]
Dispositions and Held-for-Sales Businesses
Debt, Long-Term and Short-Term, Combined Amount		639,000,000
JORDAN
Dispositions and Held-for-Sales Businesses
Property, Plant and Equipment, Net		300,000,000
Debt, Long-Term and Short-Term, Combined Amount		176,000,000
JORDAN | AES Jordan
Dispositions and Held-for-Sales Businesses
Equity Method Investment, Ownership Percentage			10.00%
Disposal Group, Held-for-sale, Not Discontinued Operations [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income (Loss) from Individually Significant Component Disposed of or Held-for-sale, Excluding Discontinued Operations, Attributable to Parent, before Income Tax		61,000,000	$ 44,000,000	77,000,000
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Mong Duong Subsidiary [Member]
Dispositions and Held-for-Sales Businesses
Disposal Group Not Discontinued Operation Ownership Interest Sold			51.00%
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Mong Duong Finance Holdings B.V._Related Party [Member]
Dispositions and Held-for-Sales Businesses
Disposal Group Not Discontinued Operation Ownership Interest Sold			51.00%
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Mong Duong held-dfor-sale [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income (Loss) from Individually Significant Component Disposed of or Held-for-sale, Excluding Discontinued Operations, Attributable to Parent, before Income Tax		40,000,000	$ 50,000,000	56,000,000
Assets Carrying Amount Disclosure Nonrecurring		396,000,000
Dispositions and Held-for-Sales Businesses
long term Concession receivable		1,100,000,000
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | JORDAN
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income (Loss) from Individually Significant Component Disposed of or Held-for-sale, Excluding Discontinued Operations, Attributable to Parent, before Income Tax		21,000,000	$ (6,000,000)	21,000,000
Assets Carrying Amount Disclosure Nonrecurring		164,000,000
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Jordan (IPP1 & IPP4)
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Proceeds from Divestiture of Businesses		58,000,000
Dispositions and Held-for-Sales Businesses
Disposal Group Not Discontinued Operation Ownership Interest Sold			26.00%
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income (Loss) from Individually Significant Component Disposed of or Held-for-sale, Excluding Discontinued Operations, Attributable to Parent, before Income Tax		0	$ 0	40,000,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Itabo Disposal Group
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income (Loss) from Individually Significant Component Disposed of or Held-for-sale, Excluding Discontinued Operations, Attributable to Parent, before Income Tax		0	0	5,000,000
Proceeds from Divestiture of Businesses and Interests in Affiliates		$ 88,000,000
Dispositions and Held-for-Sales Businesses
Disposal Group Not Discontinued Operation Ownership Interest Sold		43.00%
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Estrella del Mar I
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Proceeds from Divestiture of Businesses and Interests in Affiliates		$ 6,000,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Alto Maipo
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income (Loss) from Individually Significant Component Disposed of or Held-for-sale, Excluding Discontinued Operations, Attributable to Parent, before Income Tax		0	$ 0	$ 35,000,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | AES Tiete Inova Solucoes
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Proceeds from Divestiture of Businesses and Interests in Affiliates		20,000,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Colon [Domain]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Proceeds from Divestiture of Businesses and Interests in Affiliates		51,000,000
Itabo Disposal Group | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Gain (Loss) on Disposition of Business		4,000,000
AES Tiete Inova Solucoes | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Gain (Loss) on Disposition of Business		(1,000,000)
Alto Maipo
Dispositions and Held-for-Sales Businesses
Goodwill					$ 868,000,000
Alto Maipo | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Gain (Loss) on Disposition of Business		2,100,000,000
Dispositions and Held-for-Sales Businesses
Goodwill, Written off Related to Sale of Business Unit		224,000,000
Colon [Domain] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Gain (Loss) on Disposition of Business		$ 6,000,000