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Fair Value (Nonrecurring Unobservable Inputs) (Details) - USD ($) $ in Millions | 12 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019
Fair Value | Level 3 |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring | $ 2,225 |  |  |  |  |  |  |  |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Assets Liabilities Value | 101 |  |  |  |  |  |  |  |
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 |  | 2,043 |  |  |  |  |  |  |
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 |  | 17 |  |  |  |  |  |  |
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 |  | 2,339 |  |  |  |  |  |  |
Long Lived Assets Held For Sale [Member] | Level 3 | OPGC Affiliate [Member] |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  |  |  |  |  |  |  | $ 152 |
Long Lived Assets Held And Used [Member] | Fair Value | Buffalo Gap [Member] |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring | 29 |  |  |  |  |  |  |  |
Long Lived Assets Held And Used [Member] | Fair Value | buffalo gap II [Member] [Member] |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring | 73 |  |  |  |  |  |  |  |
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 |  |  | $ 78 |  |  |  |  |  |
Long Lived Assets Held And Used [Member] | Fair Value | Angamos [Member] |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  |  | 241 |  |  |  |  |  |
Long Lived Assets Held And Used [Member] | Fair Value | Ventanas 3 & 4 |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  |  | 661 |  |  |  |  |  |
Long Lived Assets Held And Used [Member] | Fair Value | buffalo gap III |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring | 91 |  |  |  |  |  |  |  |
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 |  | 0 |  |  |  |  |  |
Long Lived Assets Held And Used [Member] | Fair Value | Level 3 | Gener Subsidiary [Member] |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  |  |  | $ 73 |  |  |  |  |
Long Lived Assets Held And Used [Member] | Fair Value | Level 3 | AES Panama |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  |  |  |  | $ 14 |  |  |  |
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 |  |  | 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 |  | 86 | 86 |  | $ 306 | [1] | $ 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 | 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 |  | 0 |  |  |  |  |  |
Long Lived Assets Held And Used [Member] | Fair Value | Level 3 | Alto Maipo |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  |  | 2,043 |  |  |  |  |  |
Long Lived Assets Held And Used [Member] | Hawaii Subsidiary [Member] |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  |  |  |  |  |  |  |  | $ 103
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 |  |  | $ 12 |  |  |  |  |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Minimum | Buffalo Gap [Member] |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | (12.00%) |  |  |  |  |  |  |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Minimum | buffalo gap II [Member] [Member] |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | (10.00%) |  |  |  |  |  |  |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Minimum | Mountain View Power Partners |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | (69.00%) |  |  |  |  |  |  |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Minimum | Angamos [Member] |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | (8.00%) |  |  |  |  |  |  |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Minimum | AES PR |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | (80.00%) |  |  |  |  |  |  |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Minimum | Ventanas 3 & 4 |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | (18.00%) |  |  |  |  |  |  |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Minimum | buffalo gap III |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | (12.00%) |  |  |  |  |  |  |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Minimum | Alto Maipo |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | (14.00%) |  |  |  |  |  |  |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Maximum | Buffalo Gap [Member] |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 6.00% |  |  |  |  |  |  |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Maximum | buffalo gap II [Member] [Member] |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 6.00% |  |  |  |  |  |  |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Maximum | Mountain View Power Partners |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 54.00% |  |  |  |  |  |  |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Maximum | Angamos [Member] |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 58.00% |  |  |  |  |  |  |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Maximum | AES PR |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 8.00% |  |  |  |  |  |  |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Maximum | Ventanas 3 & 4 |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 23.00% |  |  |  |  |  |  |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Maximum | buffalo gap III |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 6.00% |  |  |  |  |  |  |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Maximum | Alto Maipo |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 14.00% |  |  |  |  |  |  |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Weighted Average | Buffalo Gap [Member] |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | (1.00%) |  |  |  |  |  |  |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Weighted Average | buffalo gap II [Member] [Member] |  |  |  |  |  |  |  |  |
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 | Mountain View Power Partners |  |  |  |  |  |  |  |  |
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 | Angamos [Member] |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 8.00% |  |  |  |  |  |  |  |
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Weighted Average | AES PR |  |  |  |  |  |  |  |  |
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 | Ventanas 3 & 4 |  |  |  |  |  |  |  |  |
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] | Weighted Average | buffalo gap III |  |  |  |  |  |  |  |  |
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 | Alto Maipo |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 2.00% |  |  |  |  |  |  |  |
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Minimum | Buffalo Gap [Member] |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | (45.00%) |  |  |  |  |  |  |  |
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Minimum | buffalo gap II [Member] [Member] |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | (26.00%) |  |  |  |  |  |  |  |
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Minimum | Mountain View Power Partners |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | (10.00%) |  |  |  |  |  |  |  |
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Minimum | Angamos [Member] |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | (8.00%) |  |  |  |  |  |  |  |
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Minimum | AES PR |  |  |  |  |  |  |  |  |
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] | Minimum | Ventanas 3 & 4 |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | (5.00%) |  |  |  |  |  |  |  |
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Minimum | buffalo gap III |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | (18.00%) |  |  |  |  |  |  |  |
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Minimum | Alto Maipo |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | (18.00%) |  |  |  |  |  |  |  |
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Maximum | Buffalo Gap [Member] |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 45.00% |  |  |  |  |  |  |  |
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Maximum | buffalo gap II [Member] [Member] |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 39.00% |  |  |  |  |  |  |  |
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Maximum | Mountain View Power Partners |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 56.00% |  |  |  |  |  |  |  |
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Maximum | Angamos [Member] |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 53.00% |  |  |  |  |  |  |  |
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Maximum | AES PR |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 97.00% |  |  |  |  |  |  |  |
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Maximum | Ventanas 3 & 4 |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 21.00% |  |  |  |  |  |  |  |
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Maximum | buffalo gap III |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 29.00% |  |  |  |  |  |  |  |
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Weighted Average | Buffalo Gap [Member] |  |  |  |  |  |  |  |  |
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 | buffalo gap II [Member] [Member] |  |  |  |  |  |  |  |  |
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] | Weighted Average | Mountain View Power Partners |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 46.00% |  |  |  |  |  |  |  |
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Weighted Average | Angamos [Member] |  |  |  |  |  |  |  |  |
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] | Weighted Average | AES PR |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 0.00% |  |  |  |  |  |  |  |
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Weighted Average | Ventanas 3 & 4 |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 6.00% |  |  |  |  |  |  |  |
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Weighted Average | buffalo gap III |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 2.00% |  |  |  |  |  |  |  |
Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Minimum | AES PR |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 18.00% |  |  |  |  |  |  |  |
Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Maximum | AES PR |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 0.00% |  |  |  |  |  |  |  |
Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Weighted Average | Buffalo Gap [Member] |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 11.00% |  |  |  |  |  |  |  |
Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Weighted Average | buffalo gap II [Member] [Member] |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 11.00% |  |  |  |  |  |  |  |
Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Weighted Average | Mountain View Power Partners |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 8.00% |  |  |  |  |  |  |  |
Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Weighted Average | Angamos [Member] |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 11.00% |  |  |  |  |  |  |  |
Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Weighted Average | Ventanas 3 & 4 |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 11.00% |  |  |  |  |  |  |  |
Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Weighted Average | buffalo gap III |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 11.00% |  |  |  |  |  |  |  |
Sale price per kilowatt (USD) | Valuation, Income Approach [Member] | Maximum | Alto Maipo |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 8.00% |  |  |  |  |  |  |  |
Sale price per kilowatt (USD) | Valuation, Income Approach [Member] | Weighted Average | Alto Maipo |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 2.00% |  |  |  |  |  |  |  |
Age of unit when sold | Valuation, Income Approach [Member] | Weighted Average | Alto Maipo |  |  |  |  |  |  |  |  |
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items] |  |  |  |  |  |  |  |  |
Fair Value Measurement Inputs, Nonrecurring | 7.00% |  |  |  |  |  |  |  |
[1] | See Note 22—Asset Impairment Expense for further information.(5)See Note 8—Investments In and Advances to Affiliates for further information.

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- Definition This element represents the aggregate carrying amount of the assets measured at fair value on a nonrecurring basis by the entity before the recognition of impairment charges. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition This element represents net derivative assets and liabilities measured at fair value using significant unobservable inputs (Level 3) which are required for reconciliation purposes of beginning and ending balances. + References No definition available. + Details
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