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Summary of Significant Accounting and Reporting Policies - Noncontrolling Interests (Details) - NEER [Member] $ in Millions | 12 Months Ended
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Dec. 31, 2024 USD ($) MW | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Summary of Significant Accounting Policies [Line Items] |  |  |
income associated with differential membership interests | $ | $ 1,329 | $ 1,135 | $ 987
Differential Membership Interests |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Noncontrolling Interests associated with Differential Membership Interests | $ | $ (9,062) | $ (8,857) |
Variable Interest Entity, Primary Beneficiary [Member] |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Wind Electric Generating Facility Capability | 11,258 |  |
Solar generating facility capability | 4,084 |  |
Battery Storage Facility Capability [Line Items] | 1,919 |  |

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- Definition Battery Storage Facility Capability + References No definition available. + Details
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- Definition income associated with differential membership interests + References No definition available. + Details
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- Definition Noncontrolling Interests associated with Differential Membership Interests + References No definition available. + Details
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- Definition Total capability of solar electric generating facilities + References No definition available. + Details
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- Definition Total capability of wind electric generating facilities. + References No definition available. + Details
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- Details
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- Details
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- Details
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