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v3.25.2

RATE MATTERS - ETT Rate Matters (Details) - USD ($) $ in Millions | 1 Months Ended | 2 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jun. 30, 2025 | Jan. 31, 2025 | May 31, 2025 | Jun. 30, 2025
ETT Interim Transmission Rates | ETT |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |
Aep share of ett cumulative revenues subject to review |  |  |  | $ 1,900
ETT Interim Transmission Rates | ETT |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |
Subsidiary, ownership percentage, parent | 50.00% |  |  | 50.00%
2025 ETT Base Rate Case |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |
Requested annual base rate increase | $ 20 | $ 57 |  |
Requested return on equity | 9.60% | 10.60% |  |
Requested debt capital structure | 59.00% | 55.00% |  |
Requested equity capital structure | 41.00% | 45.00% |  |
Requested rate increase related to depreciation rates |  |  | $ 37 |
Requested rate increase related to ROE and capital structure |  |  | $ 32 |

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- Definition Public Utilities, Requested Rate Increase (Decrease), Amount Related To Proposed ROE And Capital Structure + References No definition available. + Details
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- Definition Percentage of public utility's requested debt to capital, including debt and equity. + References No definition available. + Details
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- Details
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