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Debt - Non-Recourse Debt Narrative (Details)	1 Months Ended	3 Months Ended		6 Months Ended
	Feb. 28, 2017 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)
Debt Instrument [Line Items]
Debt defaults at risk of causing cross default		0		0
Gain (loss) on extinguishment of debt		$ (12,000,000)	$ 0	$ 5,000,000	$ 4,000,000
Proceeds from Issuance of Debt	$ 75,000,000
AES Southland [Domain]
Debt Instrument [Line Items]
Issued new debt		$ 2,000,000,000		$ 2,000,000,000
Senior Notes [Member] | AES Southland [Domain]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		4.50%		4.50%
Nonrecourse Debt [Member]
Debt Instrument [Line Items]
Gain (loss) on extinguishment of debt				$ 58,000,000
Issued new debt		$ 1,963,000,000		1,963,000,000
Repayments of Long-term Debt				(1,157,000,000)
Nonrecourse Debt [Member] | Eletropaulo [Domain]
Debt Instrument [Line Items]
Gain (loss) on extinguishment of debt				0
Issued new debt		103,000,000		103,000,000
Repayments of Long-term Debt				(86,000,000)
Nonrecourse Debt [Member] | MCAC - Generation [Member]
Debt Instrument [Line Items]
Gain (loss) on extinguishment of debt				0
Issued new debt		150,000,000		150,000,000
Repayments of Long-term Debt				0
Nonrecourse Debt [Member] | AES Southland [Domain]
Debt Instrument [Line Items]
Gain (loss) on extinguishment of debt				0
Issued new debt		188,000,000		188,000,000
Repayments of Long-term Debt				0
Nonrecourse Debt [Member] | AES Tiete [Domain]
Debt Instrument [Line Items]
Gain (loss) on extinguishment of debt				5,000,000
Issued new debt		585,000,000		585,000,000
Repayments of Long-term Debt				(293,000,000)
Nonrecourse Debt [Member] | Andes - Generation [Member]
Debt Instrument [Line Items]
Gain (loss) on extinguishment of debt				65,000,000
Issued new debt		307,000,000		307,000,000
Repayments of Long-term Debt				(181,000,000)
Nonrecourse Debt [Member] | Los Mina [Member]
Debt Instrument [Line Items]
Gain (loss) on extinguishment of debt				2,000,000
Issued new debt		193,000,000		193,000,000
Repayments of Long-term Debt				(175,000,000)
Nonrecourse Debt [Member] | Other Subsidiaries [Member]
Debt Instrument [Line Items]
Gain (loss) on extinguishment of debt				0
Issued new debt		194,000,000		194,000,000
Repayments of Long-term Debt				(343,000,000)
Nonrecourse Debt [Member] | Gener Subsidiary [Member]
Debt Instrument [Line Items]
Gain (loss) on extinguishment of debt				0
Issued new debt		243,000,000		243,000,000
Repayments of Long-term Debt				(79,000,000)
Senior Secured Note through 2040 [Member] | AES Southland [Domain]
Debt Instrument [Line Items]
Issued new debt		1,500,000,000		1,500,000,000
Senior Secured Term Loan through 2027 [Member] | AES Southland [Domain]
Debt Instrument [Line Items]
Issued new debt		500,000,000		500,000,000
7.75% Senior Notes Due 2024 [Member] | Nonrecourse Debt [Member] | Andes - Generation [Member]
Debt Instrument [Line Items]
Issued new debt		$ 300,000,000		$ 300,000,000

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debt defaults at risk of causing cross default

+ References

No definition available.

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Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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-Section 45
-Paragraph 28
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
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-Section 40
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12355-112629

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The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
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