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DERIVATIVES AND HEDGING - Schedule of Offsetting Assets and Liabilities (Details) - USD ($) $ in Millions | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Assets: |  |
Gross Amounts Recognized | $ 1,317.5 | $ 1,039.1
Derivative Asset, Current | 309.4 | 210.4
Long-term Risk Management Assets, Net | 246.5 | 289.1
Total Assets | 555.9 | 499.5
Liabilities: |  |
Gross Amounts Recognized | 993.8 | 780.4
Current Risk Management Liabilities, Net | 132.6 | 100.0
Long-term Risk Management Liabilities, Net | 198.3 | 224.4
Total Liabilities | 330.9 | 324.4
Total MTM Derivative Contract Net Assets (Liabilities) | 225.0 | 175.1
Current Risk Management Assets |  |
Assets: |  |
Gross Amounts Recognized | 742.7 | 479.1
Gross Amounts Offset | (433.3) | (268.7)
Long-term Risk Management Assets |  |
Assets: |  |
Gross Amounts Recognized | 574.8 | 560.0
Gross Amounts Offset | (328.3) | (270.9)
Current Risk Management Liabilities |  |
Liabilities: |  |
Gross Amounts Recognized | 540.4 | 351.7
Gross Amounts Offset | (407.8) | (251.7)
Long-term Risk Management Liabilities |  |
Liabilities: |  |
Gross Amounts Recognized | 453.4 | 428.7
Gross Amounts Offset | (255.1) | (204.3)
AEP Texas |  |
Assets: |  |
Gross Amounts Recognized | 0.0 | 0.0
Derivative Asset, Current | 0.0 | 0.0
Long-term Risk Management Assets, Net | 0.0 | 0.0
Total Assets | 0.0 | 0.0
Liabilities: |  |
Gross Amounts Recognized | 0.2 | 0.3
Current Risk Management Liabilities, Net | 0.0 | 0.0
Long-term Risk Management Liabilities, Net | 0.0 | 0.0
Total Liabilities | 0.0 | 0.0
Total MTM Derivative Contract Net Assets (Liabilities) | 0.0 | 0.0
AEP Texas | Current Risk Management Assets |  |
Assets: |  |
Gross Amounts Recognized | 0.0 | 0.0
Gross Amounts Offset | 0.0 | 0.0
AEP Texas | Long-term Risk Management Assets |  |
Assets: |  |
Gross Amounts Recognized | 0.0 | 0.0
Gross Amounts Offset | 0.0 | 0.0
AEP Texas | Current Risk Management Liabilities |  |
Liabilities: |  |
Gross Amounts Recognized | 0.2 | 0.3
Gross Amounts Offset | (0.2) | (0.3)
AEP Texas | Long-term Risk Management Liabilities |  |
Liabilities: |  |
Gross Amounts Recognized | 0.0 | 0.0
Gross Amounts Offset | 0.0 | 0.0
APCo |  |
Assets: |  |
Gross Amounts Recognized | 34.9 | 42.2
Derivative Asset, Current | 28.3 | 35.7
Long-term Risk Management Assets, Net | 3.2 | 1.4
Total Assets | 31.5 | 37.1
Liabilities: |  |
Gross Amounts Recognized | 6.4 | 7.4
Current Risk Management Liabilities, Net | 2.9 | 2.0
Long-term Risk Management Liabilities, Net | 0.0 | 0.2
Total Liabilities | 2.9 | 2.2
Total MTM Derivative Contract Net Assets (Liabilities) | 28.6 | 34.9
APCo | Current Risk Management Assets |  |
Assets: |  |
Gross Amounts Recognized | 30.9 | 40.2
Gross Amounts Offset | (2.6) | (4.5)
APCo | Long-term Risk Management Assets |  |
Assets: |  |
Gross Amounts Recognized | 4.0 | 2.0
Gross Amounts Offset | (0.8) | (0.6)
APCo | Current Risk Management Liabilities |  |
Liabilities: |  |
Gross Amounts Recognized | 5.6 | 6.6
Gross Amounts Offset | (2.7) | (4.6)
APCo | Long-term Risk Management Liabilities |  |
Liabilities: |  |
Gross Amounts Recognized | 0.8 | 0.8
Gross Amounts Offset | (0.8) | (0.6)
I&M |  |
Assets: |  |
Gross Amounts Recognized | 12.2 | 29.7
Derivative Asset, Current | 3.9 | 18.4
Long-term Risk Management Assets, Net | 0.0 | 0.0
Total Assets | 3.9 | 18.4
Liabilities: |  |
Gross Amounts Recognized | 29.5 | 12.6
Current Risk Management Liabilities, Net | 3.2 | 0.3
Long-term Risk Management Liabilities, Net | 0.0 | 0.4
Total Liabilities | 3.2 | 0.7
Total MTM Derivative Contract Net Assets (Liabilities) | 0.7 | 17.7
I&M | Current Risk Management Assets |  |
Assets: |  |
Gross Amounts Recognized | 12.2 | 28.5
Gross Amounts Offset | (8.3) | (10.1)
I&M | Long-term Risk Management Assets |  |
Assets: |  |
Gross Amounts Recognized | 0.0 | 1.2
Gross Amounts Offset | 0.0 | (1.2)
I&M | Current Risk Management Liabilities |  |
Liabilities: |  |
Gross Amounts Recognized | 29.5 | 10.5
Gross Amounts Offset | (26.3) | (10.2)
I&M | Long-term Risk Management Liabilities |  |
Liabilities: |  |
Gross Amounts Recognized | 0.0 | 2.1
Gross Amounts Offset | 0.0 | (1.7)
OPCo |  |
Assets: |  |
Gross Amounts Recognized | 0.0 |
Derivative Asset, Current | 0.0 | 0.0
Long-term Risk Management Assets, Net | 0.0 | 0.0
Total Assets | 0.0 | 0.0
Liabilities: |  |
Gross Amounts Recognized | 51.3 | 47.7
Current Risk Management Liabilities, Net | 5.1 | 7.3
Long-term Risk Management Liabilities, Net | 46.1 | 40.2
Total Liabilities | 51.2 | 47.5
Total MTM Derivative Contract Net Assets (Liabilities) | (51.2) | (47.5)
OPCo | Current Risk Management Assets |  |
Assets: |  |
Gross Amounts Recognized | 0.0 | 0.0
Gross Amounts Offset | 0.0 | 0.0
OPCo | Long-term Risk Management Assets |  |
Assets: |  |
Gross Amounts Recognized | 0.0 | 0.0
Gross Amounts Offset | 0.0 | 0.0
OPCo | Current Risk Management Liabilities |  |
Liabilities: |  |
Gross Amounts Recognized | 5.2 | 7.5
Gross Amounts Offset | (0.1) | (0.2)
OPCo | Long-term Risk Management Liabilities |  |
Liabilities: |  |
Gross Amounts Recognized | 46.1 | 40.2
Gross Amounts Offset | 0.0 | 0.0
PSO |  |
Assets: |  |
Gross Amounts Recognized | 36.4 | 23.9
Derivative Asset, Current | 33.8 | 20.6
Long-term Risk Management Assets, Net | 0.4 | 1.4
Total Assets | 34.2 | 22.0
Liabilities: |  |
Gross Amounts Recognized | 3.3 | 7.8
Current Risk Management Liabilities, Net | 0.4 | 5.8
Long-term Risk Management Liabilities, Net | 0.7 | 0.0
Total Liabilities | 1.1 | 5.8
Total MTM Derivative Contract Net Assets (Liabilities) | 33.1 | 16.2
PSO | Current Risk Management Assets |  |
Assets: |  |
Gross Amounts Recognized | 34.6 | 22.3
Gross Amounts Offset | (0.8) | (1.7)
PSO | Long-term Risk Management Assets |  |
Assets: |  |
Gross Amounts Recognized | 1.8 | 1.6
Gross Amounts Offset | (1.4) | (0.2)
PSO | Current Risk Management Liabilities |  |
Liabilities: |  |
Gross Amounts Recognized | 1.2 | 7.6
Gross Amounts Offset | (0.8) | (1.8)
PSO | Long-term Risk Management Liabilities |  |
Liabilities: |  |
Gross Amounts Recognized | 2.1 | 0.2
Gross Amounts Offset | (1.4) | (0.2)
SWEPCo |  |
Assets: |  |
Gross Amounts Recognized | 18.8 | 19.1
Derivative Asset, Current | 17.9 | 18.1
Long-term Risk Management Assets, Net | 0.0 | 0.0
Total Assets | 17.9 | 18.1
Liabilities: |  |
Gross Amounts Recognized | 1.4 | 3.4
Current Risk Management Liabilities, Net | 0.0 | 2.3
Long-term Risk Management Liabilities, Net | 0.4 | 0.0
Total Liabilities | 0.4 | 2.3
Total MTM Derivative Contract Net Assets (Liabilities) | 17.5 | 15.8
SWEPCo | Current Risk Management Assets |  |
Assets: |  |
Gross Amounts Recognized | 18.3 | 19.1
Gross Amounts Offset | (0.4) | (1.0)
SWEPCo | Long-term Risk Management Assets |  |
Assets: |  |
Gross Amounts Recognized | 0.5 | 0.0
Gross Amounts Offset | (0.5) | 0.0
SWEPCo | Current Risk Management Liabilities |  |
Liabilities: |  |
Gross Amounts Recognized | 0.5 | 3.4
Gross Amounts Offset | (0.5) | (1.1)
SWEPCo | Long-term Risk Management Liabilities |  |
Liabilities: |  |
Gross Amounts Recognized | 0.9 | 0.0
Gross Amounts Offset | $ (0.5) | $ 0.0

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