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Subsequent Events (Details) - Subsequent Event [Member] $ in Millions	3 Months Ended
	Jun. 30, 2020 USD ($)
Subsequent Event [Line Items]
Capital Contribution to Project	$ 335
Gener Subsidiary [Member]
Subsequent Event [Line Items]
Capital Contribution to Project	$ 500

X

- Definition

Capital Contribution to Project

+ References

No definition available.

+ Details

Name:	aes_CapitalContributiontoProject
Namespace Prefix:	aes_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	dei_LegalEntityAxis=aes_GenerSubsidiaryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: