Allowance for Credit Losses (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023	Dec. 31, 2022
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts Receivable, Allowance for Credit Loss, Current	$ 32		$ 15
Accounts and Financing Receivable, Allowance for Credit Loss	74	$ 62	64	$ 84
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease)	27	25
Accounts Receivable, Allowance for Credit Loss, Writeoff	(13)	(32)
Financing Receivable, Allowance for Credit Loss, Recovery	(1)	0
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation	(3)	(15)
Accounts Receivable
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts Receivable, Allowance for Credit Loss, Current	32	8	15	4
Accounts Receivable, Allowance for Credit Loss, Writeoff	(5)	(12)
Financing Receivable, Allowance for Credit Loss, Recovery	(1)	(2)
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation	(1)	0
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	22	14
Mong Duong Subsidiary [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts Receivable, Allowance for Credit Loss, Current	24	26	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	(2)	(2)
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation	0	0
AES Argentina [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts Receivable, Allowance for Credit Loss, Current	6	16	7	31
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)	(15)
AES Gilbert
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts Receivable, Allowance for Credit Loss, Current		0	20
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease)		0
Accounts Receivable, Allowance for Credit Loss, Writeoff		(20)
Financing Receivable, Allowance for Credit Loss, Recovery		0
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation		0
Other Entity [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts Receivable, Allowance for Credit Loss, Current	12	12	$ 16	$ 1
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease)	5	11
Accounts Receivable, Allowance for Credit Loss, Writeoff	(8)	0
Financing Receivable, Allowance for Credit Loss, Recovery	0	0
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation	$ (1)	$ 0

Amount of allowance for credit loss of accounts and financing receivables. Includes, but is not limited to, notes and loan receivable.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-4

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- Definition

Amount of allowance for credit loss on accounts receivable, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-4

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- Definition

Amount of increase (decrease) in allowance for credit loss on accounts receivable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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- Definition

Amount of increase in allowance for credit loss on accounts receivable, from recovery.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Amount of direct write-downs of accounts receivable charged against the allowance.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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- Definition

Amount of foreign currency translation gain (loss) which decreases (increases) allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

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- Definition

Amount of increase (decrease) in allowance for credit loss on financing receivable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11B
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-11B

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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