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Variable Interest Entities (Narrative) (Details) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2023 USD ($) MW | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Variable Interest Entity [Line Items] |  |  |
Investments | $ | $ 76 | $ 71 | $ 71
Newport Solar Holdings |  |  |
Variable Interest Entity [Line Items] |  |  |
Sale of membership interest in VIE to tax equity investor | $ | $ 86 |  |
Nameplate capacity (in MW) | MW | 180 |  |
NWO Holdco, L.L.C |  |  |
Variable Interest Entity [Line Items] |  |  |
Nameplate capacity (in MW) | MW | 100 |  |
Variable Interest Entity, Primary Beneficiary | Aviator Wind |  |  |
Variable Interest Entity [Line Items] |  |  |
Nameplate capacity (in MW) | MW | 525 |  |
Ownership interest | 51.00% |  |
Variable Interest Entity, Primary Beneficiary | Aviator Wind Class B Membership |  |  |
Variable Interest Entity [Line Items] |  |  |
Noncontrolling ownership interest | 49.00% |  |
Variable Interest Entity, Not Primary Beneficiary |  |  |
Variable Interest Entity [Line Items] |  |  |
Investments | $ | $ 74 | $ 71 |
Variable Interest Entity, Not Primary Beneficiary | T.E.S. Filer City |  |  |
Variable Interest Entity [Line Items] |  |  |
Ownership interest | 50.00% |  |
Variable Interest Entity, Not Primary Beneficiary | Grayling |  |  |
Variable Interest Entity [Line Items] |  |  |
Ownership interest | 50.00% |  |
Variable Interest Entity, Not Primary Beneficiary | Genesee |  |  |
Variable Interest Entity [Line Items] |  |  |
Ownership interest | 50.00% |  |
Variable Interest Entity, Not Primary Beneficiary | Craven |  |  |
Variable Interest Entity [Line Items] |  |  |
Ownership interest | 50.00% |  |

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