XML 156 R122.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Benefit Plans (Impact of One Point Change in Assumptions) (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 USD ($)
Defined Benefit Plan Assumptions Sensitivity To Changes [Abstract] |
Increase of 1% in the discount rate | $ (12)
Decrease of 1% in the discount rate | 12
Increase of 1% in the long-term rate of return on plan assets | (16)
Decrease of 1% in the long-term rate of return on plan assets | $ 16

X
- Definition -- None. No documentation exists for this element. -- + References No definition available. + Details
Name: | aes_DefinedBenefitPlanAssumptionsSensitivityToChangesAbstract
Namespace Prefix: | aes_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the impact on pension expense that would result from a one percentage point decrease in the discount rate assumptions for defined benefit pension plans + References No definition available. + Details
Name: | aes_DefinedBenefitPlanEffectOfOnePercentDecreaseInDiscountRateOnPensionExpense
Namespace Prefix: | aes_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the impact on pension expense that would result from a one percentage point decrease in the long-term rate of return on plan asset assumptions for defined benefit pension plans + References No definition available. + Details
Name: | aes_DefinedBenefitPlanEffectOfOnePercentDecreaseInRateOfReturnOnPensionExpense
Namespace Prefix: | aes_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the impact on pension expense that would result from a one percentage point increase in the discount rate assumptions for defined benefit pension plans + References No definition available. + Details
Name: | aes_DefinedBenefitPlanEffectOfOnePercentIncreaseInDiscountRateOnPensionExpense
Namespace Prefix: | aes_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the impact on pension expense that would result from a one percentage point increase in the long-term rate of return on plan asset assumptions for defined benefit pension plans + References No definition available. + Details
Name: | aes_DefinedBenefitPlanEffectOfOnePercentIncreaseInRateOfReturnOnPensionExpense
Namespace Prefix: | aes_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration