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CONTINGENCIES, COMMITMENTS, AND GUARANTEES - SPC Litigation (Details) $ in Millions | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jul. 31, 2023 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Jul. 31, 2021 project
Loss Contingencies [Line Items] |  |  |  |  |
Total operating revenues |  | $ 25,253 | $ 29,279 | $ 23,113 |
Net loss attributable to noncontrolling interests |  | (127) | (107) | (99) |
Other revenues |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Total operating revenues |  | 949 | 732 | 708 |
Southern Power |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Total operating revenues |  | 2,189 | 3,369 | 2,216 |
Net loss attributable to noncontrolling interests |  | (127) | (107) | (99) |
Southern Power | Other revenues |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Total operating revenues |  | 55 | $ 36 | $ 30 |
Southern Power | Southern Power vs First Solar | Settled Litigation |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Number of solar projects | project |  |  |  |  | 5
Proceeds from legal settlements | $ 36 |  |  |  |
Litigation settlement |  | 18 |  |  |
Decrease in operating expense, maintenance and operations |  | 11 |  |  |
Net loss attributable to noncontrolling interests |  | 6 |  |  |
Southern Power | Southern Power vs First Solar | Settled Litigation | Other revenues |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Total operating revenues |  | $ 7 |  |  |

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