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Contingencies (Loss Contingencies) (Details) $ in Millions | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2022 USD ($) agreement | Dec. 31, 2022 USD ($) agreement | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Loss Contingencies [Line Items] |  |  |  |
Guarantor Obligations, Term |  | less than one year to no more than 16 years |  |
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 2,693 | $ 2,693 |  |
Obligations number of agreements | agreement | 140 | 140 |  |
Litigation Contingencies |  |  |  |
Commitments and Contingencies (see Notes 12 and 13) |  |  |  |
Environmental Remediation Contingency [Domain] |  |  |  |
Environmental Contingencies |  |  |  |
Liability recorded for projected environmental remediation costs | 10 | 10 | 4 |
Guarantee Obligations [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 2,406 | $ 2,406 |  |
Obligations number of agreements | agreement | 81 | 81 |  |
Litigation |  |  |  |
Litigation Contingencies |  |  |  |
Aggregate reserves for claims deemed both probable and reasonably estimable | $ 22 | $ 22 | $ 23 |
Parent Company [Member] | Guarantees [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 2,400 | $ 2,400 |  |
Obligations number of agreements | agreement | 81 | 81 |  |
AES Tiete [Domain] | Compensation from Concession Agreement |  |  |  |
Litigation Contingencies |  |  |  |
Deferred Compensation Arrangement with Individual, Requisite Service Period | 2 years 8 months 12 days |  |  |
AES Tiete | Compensation from Concession Agreement |  |  |  |
Litigation Contingencies |  |  |  |
Reversal of Cost of Goods Sold |  |  |  | $ 6
Other Intangible Assets, Net |  |  |  | 184
Commitments and Contingencies (see Notes 12 and 13) |  |  |  | $ 190
Unsecured Debt [Member] | Financial Standby Letter of Credit [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 128 | $ 128 |  |
Obligations number of agreements | agreement | 39 | 39 |  |
Secured Debt [Member] | Financial Standby Letter of Credit [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 34 | $ 34 |  |
Obligations number of agreements | agreement | 16 | 16 |  |
Secured Debt [Member] | Standby Letters of Credit [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 123 | $ 123 |  |
Obligations number of agreements | agreement | 2 | 2 |  |
Secured Debt [Member] | Surety Bond |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 2 | $ 2 |  |
Obligations number of agreements | agreement | 2 | 2 |  |
Minimum [Member] | Standby Letters of Credit [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage |  | 1.00% |  |
Minimum [Member] | Guarantee Obligations [Member] |  |  |  |
Environmental Contingencies |  |  |  |
Loss Contingency, Estimate of Possible Loss | $ 1 | $ 1 |  |
Minimum [Member] | Litigation |  |  |  |
Environmental Contingencies |  |  |  |
Loss Contingency, Estimate of Possible Loss | 51 | 51 |  |
Minimum [Member] | Unsecured Debt [Member] | Financial Standby Letter of Credit [Member] |  |  |  |
Environmental Contingencies |  |  |  |
Loss Contingency, Estimate of Possible Loss | 1 | 1 |  |
Minimum [Member] | Secured Debt [Member] | Financial Standby Letter of Credit [Member] |  |  |  |
Environmental Contingencies |  |  |  |
Loss Contingency, Estimate of Possible Loss | 1 | 1 |  |
Minimum [Member] | Secured Debt [Member] | Surety Bond |  |  |  |
Environmental Contingencies |  |  |  |
Loss Contingency, Estimate of Possible Loss | 1 | 1 |  |
Minimum [Member] | Line of Credit | Financial Standby Letter of Credit [Member] |  |  |  |
Environmental Contingencies |  |  |  |
Loss Contingency, Estimate of Possible Loss | 59 | $ 59 |  |
Maximum [Member] | Standby Letters of Credit [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage |  | 3.00% |  |
Maximum [Member] | Environmental Remediation Contingency [Domain] |  |  |  |
Environmental Contingencies |  |  |  |
Loss Contingency, Estimate of Possible Loss | 12 | $ 12 |  |
Maximum [Member] | Guarantee Obligations [Member] |  |  |  |
Environmental Contingencies |  |  |  |
Loss Contingency, Estimate of Possible Loss | 400 | 400 |  |
Maximum [Member] | Litigation |  |  |  |
Environmental Contingencies |  |  |  |
Loss Contingency, Estimate of Possible Loss | 88 | 88 |  |
Maximum [Member] | Unsecured Debt [Member] | Financial Standby Letter of Credit [Member] |  |  |  |
Environmental Contingencies |  |  |  |
Loss Contingency, Estimate of Possible Loss | 36 | 36 |  |
Maximum [Member] | Secured Debt [Member] | Financial Standby Letter of Credit [Member] |  |  |  |
Environmental Contingencies |  |  |  |
Loss Contingency, Estimate of Possible Loss | 15 | 15 |  |
Maximum [Member] | Secured Debt [Member] | Surety Bond |  |  |  |
Environmental Contingencies |  |  |  |
Loss Contingency, Estimate of Possible Loss | 1 | 1 |  |
Maximum [Member] | Line of Credit | Financial Standby Letter of Credit [Member] |  |  |  |
Environmental Contingencies |  |  |  |
Loss Contingency, Estimate of Possible Loss | $ 64 | $ 64 |  |

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