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v3.23.3

Rate Matters FERC (Details) - USD ($) $ in Millions | 9 Months Ended
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Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2021
FERC PJM Transmission Formula Rate Challenge [Member] |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Stand Alone Treatment of NOLCs Annual Revenue Increase | $ 60.0 | $ 69.0 | $ 78.0
FERC RTO Incentive Complaint [Member] |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Estimated Pretax Income Reduction | 20.0 |  |
Independence Energy Connection Project [Member] |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
AEP Share of Independence Energy Connection Capital Costs | $ 92.0 |  |
Ohio Power Co [Member] | Ohio Transmission Company [Member] | FERC RTO Incentive Complaint [Member] |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Basis Point RTO Incentive | 50.00% |  |

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