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Fair Value (Nonrecurring Measurements) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Other Asset Impairment Charges | $ 482 | $ 872 | $ 483 | $ 1,345
AES Puerto Rico |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | 73 |  | 73
Ventanas [Domain] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring | 12 |  | 12 |
Angamos [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring | 86 |  | 86 |
Maritza |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring | 452 |  | 452 |
Long Lived Assets Held And Used [Member] | AES Puerto Rico |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Other Asset Impairment Charges |  |  |  | 475
Long Lived Assets Held And Used [Member] | Ventanas [Domain] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Other Asset Impairment Charges |  |  |  | 67
Long Lived Assets Held And Used [Member] | Angamos [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Other Asset Impairment Charges | 0 | 155 | 0 | 155
Long Lived Assets Held And Used [Member] | Ventanas 3 & 4 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Other Asset Impairment Charges | 0 | 649 | 0 | 649
Long Lived Assets Held And Used [Member] | Maritza |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Other Asset Impairment Charges | $ 475 | 0 | $ 475 | 0
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | 452 |  | 452
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | AES Puerto Rico |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | 548 |  | 548
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | AES Puerto Rico | Level 1 [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | 0 |  | 0
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | AES Puerto Rico | Level 2 [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | 0 |  | 0
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | AES Puerto Rico | Level 3 [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | 73 |  | 73
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Ventanas [Domain] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | 78 |  | 78
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Ventanas [Domain] | Level 1 [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | 0 |  | 0
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Ventanas [Domain] | Level 2 [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | 0 |  | 0
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Ventanas [Domain] | Level 3 [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | 11 |  | 11
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Angamos [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | 241 |  | 241
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Angamos [Member] | Level 1 [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | 0 |  | 0
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Angamos [Member] | Level 2 [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | 0 |  | 0
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Angamos [Member] | Level 3 [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | 86 |  | 86
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Ventanas 3 & 4 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | 661 |  | 661
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Ventanas 3 & 4 | Level 1 [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | 0 |  | 0
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Ventanas 3 & 4 | Level 2 [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | 0 |  | 0
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Ventanas 3 & 4 | Level 3 [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | 12 |  | 12
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Maritza |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | 927 |  | 927
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Maritza | Level 1 [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | 0 |  | 0
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Maritza | Level 2 [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | 0 |  | 0
Long Lived Assets Held And Used [Member] | Estimate of Fair Value Measurement [Member] | Maritza | Level 3 [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | $ 452 |  | $ 452
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Property, Plant and Equipment [Member] | Weighted Average [Member] | Maritza |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Fair Value Measurement Inputs, Nonrecurring |  |  | (11.00%) |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Property, Plant and Equipment [Member] | Maximum [Member] | Maritza |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Fair Value Measurement Inputs, Nonrecurring |  |  | 11.00% |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Property, Plant and Equipment [Member] | Minimum [Member] | Maritza |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Fair Value Measurement Inputs, Nonrecurring |  |  | (66.00%) |
Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Property, Plant and Equipment [Member] | Weighted Average [Member] | Maritza |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Fair Value Measurement Inputs, Nonrecurring |  |  | 21.00% |
Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Property, Plant and Equipment [Member] | Maximum [Member] | Maritza |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Fair Value Measurement Inputs, Nonrecurring |  |  | 25.00% |
Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Property, Plant and Equipment [Member] | Minimum [Member] | Maritza |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Fair Value Measurement Inputs, Nonrecurring |  |  | 20.00% |
Measurement Input, Variable Margin | Valuation, Income Approach [Member] | Property, Plant and Equipment [Member] | Weighted Average [Member] | Maritza |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Fair Value Measurement Inputs, Nonrecurring |  |  | (1.00%) |
Measurement Input, Variable Margin | Valuation, Income Approach [Member] | Property, Plant and Equipment [Member] | Maximum [Member] | Maritza |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Fair Value Measurement Inputs, Nonrecurring |  |  | 23.00% |
Measurement Input, Variable Margin | Valuation, Income Approach [Member] | Property, Plant and Equipment [Member] | Minimum [Member] | Maritza |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Fair Value Measurement Inputs, Nonrecurring |  |  | (66.00%) |

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