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Fair Value (Nonrecurring Unobservable Inputs) (Details) - USD ($) $ in Millions | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021 | Sep. 30, 2021
Fair Value | Level 3 |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring | $ 1,195 |  |  |  |  |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Assets Liabilities Value | 17 |  |  |  |  |
AES PR |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  |  |  | $ 73 |  |
Long Lived Assets Held For Sale [Member] | Fair Value | Level 3 | AES Panama |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | $ 0 |  |  |  |
Long Lived Assets Held For Sale [Member] | Fair Value | Level 3 | Alto Maipo |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | 0 |  |  |  |
Long Lived Assets Held For Sale [Member] | AES Panama |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | 216 |  |  |  |
Long Lived Assets Held For Sale [Member] | Alto Maipo |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring | 190 |  |  |  |  |
Long Lived Assets Held And Used [Member] | Fair Value | Mountain View Power Partners |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  |  | $ 504 |  |  |
Long Lived Assets Held And Used [Member] | Fair Value | Level 3 | Buffalo Gap [Member] |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring | 0 |  |  |  | $ 0 |
Long Lived Assets Held And Used [Member] | Fair Value | Level 3 | buffalo gap II [Member] [Member] |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  |  |  |  | 0 |
Long Lived Assets Held And Used [Member] | Fair Value | Level 3 | Mountain View Power Partners |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  |  | $ 311 |  | 11 |
Long Lived Assets Held And Used [Member] | Fair Value | Level 3 | Angamos [Member] |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring | 311 | 86 |  |  | 73 | $ 306
Long Lived Assets Held And Used [Member] | Fair Value | Level 3 | Ventanas 3 & 4 |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | $ 12 |  |  |  |
Long Lived Assets Held And Used [Member] | Fair Value | Level 3 | buffalo gap III |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  |  |  |  | $ 0 |
Long Lived Assets Held And Used [Member] | Fair Value | Level 3 | AES Bulgaria |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  |  |  |  |  | $ 452
Long Lived Assets Held And Used [Member] | Level 3 | Hawaii Subsidiary [Member] |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring | 452 |  |  |  |  |
Equity Method Investments [Member] | Fair Value | Level 3 | sPower [Member] |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring | 432 |  |  |  |  |
Equity Method Investments [Member] | sPower [Member] |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring | 607 |  |  |  |  |
Equity Method Investments [Member] | Level 3 | sPower [Member] |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring | $ 432 |  |  |  |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Minimum | TEG TEP |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | (15.00%) |  |  |  |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Minimum | AES Bulgaria |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | (66.00%) |  |  |  |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Maximum | TEG TEP |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 2.00% |  |  |  |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Maximum | AES Bulgaria |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 11.00% |  |  |  |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Weighted Average | TEG TEP |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 0.00% |  |  |  |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Weighted Average | AES Bulgaria |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | (11.00%) |  |  |  |  |
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Minimum | TEG TEP |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 36.00% |  |  |  |  |
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Minimum | AES Bulgaria |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | (66.00%) |  |  |  |  |
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Maximum | TEG TEP |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 43.00% |  |  |  |  |
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Maximum | AES Bulgaria |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 23.00% |  |  |  |  |
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Weighted Average | TEG TEP |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 37.00% |  |  |  |  |
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Weighted Average | AES Bulgaria |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | (1.00%) |  |  |  |  |
Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Minimum | TEG TEP |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 13.00% |  |  |  |  |
Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Minimum | AES Bulgaria |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 20.00% |  |  |  |  |
Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Maximum | sPower [Member] |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 7.00% |  |  |  |  |
Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Maximum | TEG TEP |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 20.00% |  |  |  |  |
Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Maximum | AES Bulgaria |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 25.00% |  |  |  |  |
Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Weighted Average | TEG TEP |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 15.00% |  |  |  |  |
Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Weighted Average | AES Bulgaria |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 21.00% |  |  |  |  |
Measurement Input, Expected Dividend Rate | Valuation, Income Approach [Member] | Long Lived Assets Held And Used [Member] | Minimum | sPower [Member] |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | (36.00%) |  |  |  |  |
Measurement Input, Expected Dividend Rate | Valuation, Income Approach [Member] | Long Lived Assets Held And Used [Member] | Maximum | sPower [Member] |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 41.00% |  |  |  |  |
Measurement Input, Expected Dividend Rate | Valuation, Income Approach [Member] | Long Lived Assets Held And Used [Member] | Weighted Average | sPower [Member] |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 2.00% |  |  |  |  |

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