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Summary of Significant Accounting Policies Property - Summary of Property Plant and Equipment (Parenthetical) (Details) - OG&E [Member] - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Electric Generation Equipment [Member] |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Amount of Acquisition Adjustments | $ 148.3 | $ 148.3
Public Utilities, Property, Plant and Equipment, Amount of Acquisition Adjustments, Related Accumulated Depreciation | 83.8 | 78.3
Electric Transmission [Member] |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Amount of Acquisition Adjustments | 3.3 | 3.3
Public Utilities, Property, Plant and Equipment, Amount of Acquisition Adjustments, Related Accumulated Depreciation | $ 1.1 | $ 1.0

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- Definition Amount of acquisition adjustments included in property, plant and equipment (PPE) for utilities. + References No definition available. + Details
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- Definition Amount of increase (decrease) for acquisition adjustments on accumulated depreciation included in long-lived, physical assets used to produce goods and services and not intended for resale for utilities. + 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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- Details
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- Details
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- Details
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