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SIGNIFICANT ACCOUNTING MATTERS (Tables) | 6 Months Ended
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Jun. 30, 2025
Accounting Policies [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted | The following table presents AEP’s basic and diluted EPS calculations included on the statements of income:
| Three Months Ended June 30,
| 2025 |  | 2024
| (in millions, except per share data)
|  |  | $/share |  |  |  | $/share
Earnings Attributable to AEP Common Shareholders | $ | 1,225.8 |  |  |  |  | $ | 340.3 |  |  |
Weighted-Average Number of Basic AEP Common Shares Outstanding | 534.3 |  |  | $ | 2.29 |  |  | 528.9 |  |  | $ | 0.64 |
Weighted-Average Dilutive Effect | 2.1 |  |  | — |  |  | 1.2 |  |  | — |
Weighted-Average Number of Diluted AEP Common Shares Outstanding | 536.4 |  |  | $ | 2.29 |  |  | 530.1 |  |  | $ | 0.64 |
| Six Months Ended June 30,
| 2025 |  | 2024
| (in millions, except per share data)
|  |  | $/share |  |  |  | $/share
Earnings Attributable to AEP Common Shareholders | $ | 2,026.0 |  |  |  |  | $ | 1,343.4 |  |  |
Weighted-Average Number of Basic AEP Common Shares Outstanding | 533.8 |  |  | $ | 3.80 |  |  | 527.7 |  |  | $ | 2.55 |
Weighted-Average Dilutive Effect | 1.7 |  |  | (0.02) |  |  | 1.2 |  |  | (0.01) |
Weighted-Average Number of Diluted AEP Common Shares Outstanding | 535.5 |  |  | $ | 3.78 |  |  | 528.9 |  |  | $ | 2.54 |
Schedule of Cash and Cash Equivalents | The following tables provide a reconciliation of Cash, Cash Equivalents and Restricted Cash reported within the balance sheets that sum to the total of the same amounts shown on the statements of cash flows:
|  | June 30, 2025
|  | AEP |  | AEP Texas |  | APCo |  | SWEPCo
|  | (in millions)
Cash and Cash Equivalents |  | $ | 227.3 |  |  | $ | 0.1 |  |  | $ | 6.2 |  |  | $ | 3.7 |
Restricted Cash |  | 51.3 |  |  | 13.3 |  |  | 18.2 |  |  | 16.7 |
Total Cash, Cash Equivalents and Restricted Cash |  | $ | 278.6 |  |  | $ | 13.4 |  |  | $ | 24.4 |  |  | $ | 20.4 |
|  | December 31, 2024
|  | AEP |  | AEP Texas |  | APCo |  | SWEPCo
|  | (in millions)
Cash and Cash Equivalents |  | $ | 202.9 |  |  | $ | 0.1 |  |  | $ | 3.9 |  |  | $ | 1.2 |
Restricted Cash |  | 43.1 |  |  | 23.5 |  |  | 16.2 |  |  | 3.4 |
Total Cash, Cash Equivalents and Restricted Cash |  | $ | 246.0 |  |  | $ | 23.6 |  |  | $ | 20.1 |  |  | $ | 4.6 |
Restrictions on Cash and Cash Equivalents | The following tables provide a reconciliation of Cash, Cash Equivalents and Restricted Cash reported within the balance sheets that sum to the total of the same amounts shown on the statements of cash flows:
|  | June 30, 2025
|  | AEP |  | AEP Texas |  | APCo |  | SWEPCo
|  | (in millions)
Cash and Cash Equivalents |  | $ | 227.3 |  |  | $ | 0.1 |  |  | $ | 6.2 |  |  | $ | 3.7 |
Restricted Cash |  | 51.3 |  |  | 13.3 |  |  | 18.2 |  |  | 16.7 |
Total Cash, Cash Equivalents and Restricted Cash |  | $ | 278.6 |  |  | $ | 13.4 |  |  | $ | 24.4 |  |  | $ | 20.4 |
|  | December 31, 2024
|  | AEP |  | AEP Texas |  | APCo |  | SWEPCo
|  | (in millions)
Cash and Cash Equivalents |  | $ | 202.9 |  |  | $ | 0.1 |  |  | $ | 3.9 |  |  | $ | 1.2 |
Restricted Cash |  | 43.1 |  |  | 23.5 |  |  | 16.2 |  |  | 3.4 |
Total Cash, Cash Equivalents and Restricted Cash |  | $ | 246.0 |  |  | $ | 23.6 |  |  | $ | 20.1 |  |  | $ | 4.6 |

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