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Property, Plant and Equipment (Regulated and Non-Regulated Generation and Distribution PP&E) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Electric generation, distribution assets and other	$ 30,459us-gaap_PropertyPlantAndEquipmentOther	$ 30,596us-gaap_PropertyPlantAndEquipmentOther
Accumulated depreciation	(9,962)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	(9,604)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Net electric generation and distribution assets and other	20,497aes_PropertyPlantAndEquipmentElectricGenerationDistributionAssetsAndOtherNetHeldForSale	20,992aes_PropertyPlantAndEquipmentElectricGenerationDistributionAssetsAndOtherNetHeldForSale
Regulated
Property, Plant and Equipment [Line Items]
Electric generation, distribution assets and other	13,103us-gaap_PropertyPlantAndEquipmentOther / aes_PropertyPlantAndEquipmentByRegulatedNonregulatedAxis = aes_RegulatedMember	13,031us-gaap_PropertyPlantAndEquipmentOther / aes_PropertyPlantAndEquipmentByRegulatedNonregulatedAxis = aes_RegulatedMember
Accumulated depreciation	(4,841)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / aes_PropertyPlantAndEquipmentByRegulatedNonregulatedAxis = aes_RegulatedMember	(4,732)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / aes_PropertyPlantAndEquipmentByRegulatedNonregulatedAxis = aes_RegulatedMember
Net electric generation and distribution assets and other	8,262aes_PropertyPlantAndEquipmentElectricGenerationDistributionAssetsAndOtherNetHeldForSale / aes_PropertyPlantAndEquipmentByRegulatedNonregulatedAxis = aes_RegulatedMember	8,299aes_PropertyPlantAndEquipmentElectricGenerationDistributionAssetsAndOtherNetHeldForSale / aes_PropertyPlantAndEquipmentByRegulatedNonregulatedAxis = aes_RegulatedMember
Non Regulated
Property, Plant and Equipment [Line Items]
Electric generation, distribution assets and other	17,356us-gaap_PropertyPlantAndEquipmentOther / aes_PropertyPlantAndEquipmentByRegulatedNonregulatedAxis = aes_NonRegulatedMember	17,565us-gaap_PropertyPlantAndEquipmentOther / aes_PropertyPlantAndEquipmentByRegulatedNonregulatedAxis = aes_NonRegulatedMember
Accumulated depreciation	(5,121)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / aes_PropertyPlantAndEquipmentByRegulatedNonregulatedAxis = aes_NonRegulatedMember	(4,872)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / aes_PropertyPlantAndEquipmentByRegulatedNonregulatedAxis = aes_NonRegulatedMember
Net electric generation and distribution assets and other	$ 12,235aes_PropertyPlantAndEquipmentElectricGenerationDistributionAssetsAndOtherNetHeldForSale / aes_PropertyPlantAndEquipmentByRegulatedNonregulatedAxis = aes_NonRegulatedMember	$ 12,693aes_PropertyPlantAndEquipmentElectricGenerationDistributionAssetsAndOtherNetHeldForSale / aes_PropertyPlantAndEquipmentByRegulatedNonregulatedAxis = aes_NonRegulatedMember

X

- Definition

This element represents capitalized assets classified as property, plant and equipment not otherwise defined in the taxonomy, net of accumulated depreciation, included in noncurrent assets of discontinued and held for sale businesses.

+ References

No definition available.

+ Details

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Namespace Prefix:	aes_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.14)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 14

-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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Balance Type:	na
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X

- Definition

Amount before accumulated depreciation, depletion and amortization of other physical assets used in the normal conduct of business to produce goods and services and not intended for resale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

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Namespace Prefix:
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X

- Details

Name:	aes_PropertyPlantAndEquipmentByRegulatedNonregulatedAxis=aes_RegulatedMember
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