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Significant Accounting Matters (Tables) | 9 Months Ended
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Sep. 30, 2024
Reconciliation of Cash, Cash Equivalents and Restricted Cash |
|  | September 30, 2024
|  | AEP |  | AEP Texas |  | APCo
|  | (in millions)
Cash and Cash Equivalents |  | $ | 245.8 |  |  | $ | 0.1 |  |  | $ | 6.5 |
Restricted Cash |  | 53.4 |  |  | 45.1 |  |  | 8.3 |
Total Cash, Cash Equivalents and Restricted Cash |  | $ | 299.2 |  |  | $ | 45.2 |  |  | $ | 14.8 |
|  | December 31, 2023
|  | AEP |  | AEP Texas |  | APCo
|  | (in millions)
Cash and Cash Equivalents |  | $ | 330.1 |  |  | $ | 0.1 |  |  | $ | 5.0 |
Restricted Cash |  | 48.9 |  |  | 34.0 |  |  | 14.9 |
Total Cash, Cash Equivalents and Restricted Cash |  | $ | 379.0 |  |  | $ | 34.1 |  |  | $ | 19.9 |
Earnings Per Share |
| Three Months Ended September 30,
| 2024 |  | 2023
| (in millions, except per share data)
|  |  | $/share |  |  |  | $/share
Earnings Attributable to AEP Common Shareholders | $ | 959.6 |  |  |  |  | $ | 953.7 |  |  |
Weighted-Average Number of Basic AEP Common Shares Outstanding | 532.2 |  |  | $ | 1.80 |  |  | 520.5 |  |  | $ | 1.83 |
Weighted-Average Dilutive Effect of Stock-Based Awards | 1.4 |  |  | — |  |  | 0.9 |  |  | — |
Weighted-Average Number of Diluted AEP Common Shares Outstanding | 533.6 |  |  | $ | 1.80 |  |  | 521.4 |  |  | $ | 1.83 |
| Nine Months Ended September 30,
| 2024 |  | 2023
| (in millions, except per share data)
|  |  | $/share |  |  |  | $/share
Earnings Attributable to AEP Common Shareholders | $ | 2,303.0 |  |  |  |  | $ | 1,871.9 |  |  |
Weighted-Average Number of Basic AEP Common Shares Outstanding | 529.2 |  |  | $ | 4.35 |  |  | 516.5 |  |  | $ | 3.62 |
Weighted-Average Dilutive Effect of Stock-Based Awards | 1.3 |  |  | (0.01) |  |  | 1.3 |  |  | — |
Weighted-Average Number of Diluted AEP Common Shares Outstanding | 530.5 |  |  | $ | 4.34 |  |  | 517.8 |  |  | $ | 3.62 |
Supplementary Information | Supplementary Cash Flow Information (Applies to AEP)
|  | Nine Months Ended September 30,
Cash Flow Information |  | 2024 |  | 2023
|  | (in millions)
Cash Paid (Received) for: |  |  |  |
Interest, Net of Capitalized Amounts |  | $ | 1,247.3 |  |  | $ | 1,148.7 |
Income Taxes |  | 87.9 |  |  | 26.7 |
Sale of Transferable Tax Credits |  | (163.7) |  |  | — |
Noncash Investing and Financing Activities: |  |  |  |
Acquisitions Under Finance Leases |  | 24.5 |  |  | 38.5 |
Construction Expenditures Included in Current Liabilities as of September 30, |  | 1,015.1 |  |  | 975.0 |
Acquisition of Nuclear Fuel Included in Current Liabilities as of September 30, |  | 8.2 |  |  | 9.5 |
Noncash Increase in Noncurrent Assets from the Sale of the Competitive Contracted Renewables Portfolio |  | — |  |  | 74.7 |

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