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Commitments, Guarantees and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2023
Contractual Commitments |
Contractual Commitments - AEP |  | Less Than 1 Year |  | 2-3 Years |  | 4-5 Years |  | After 5 Years |  | Total
|  | (in millions)
Fuel Purchase Contracts (a) |  | $ | 1,126.7 |  |  | $ | 1,260.7 |  |  | $ | 313.5 |  |  | $ | 256.1 |  |  | $ | 2,957.0 |
Energy and Capacity Purchase Contracts |  | 186.4 |  |  | 412.3 |  |  | 308.8 |  |  | 419.8 |  |  | 1,327.3 |
Total |  | $ | 1,313.1 |  |  | $ | 1,673.0 |  |  | $ | 622.3 |  |  | $ | 675.9 |  |  | $ | 4,284.3 |
Contractual Commitments - APCo |  | Less Than 1 Year |  | 2-3 Years |  | 4-5 Years |  | After 5 Years |  | Total
|  | (in millions)
Fuel Purchase Contracts (a) |  | $ | 595.2 |  |  | $ | 626.1 |  |  | $ | 99.5 |  |  | $ | — |  |  | $ | 1,320.8 |
Energy and Capacity Purchase Contracts |  | 40.1 |  |  | 80.2 |  |  | 65.5 |  |  | 75.9 |  |  | 261.7 |
Total |  | $ | 635.3 |  |  | $ | 706.3 |  |  | $ | 165.0 |  |  | $ | 75.9 |  |  | $ | 1,582.5 |
Contractual Commitments - I&M |  | Less Than 1 Year |  | 2-3 Years |  | 4-5 Years |  | After 5 Years |  | Total
|  | (in millions)
Fuel Purchase Contracts (a) |  | $ | 144.4 |  |  | $ | 232.3 |  |  | $ | 130.8 |  |  | $ | 241.6 |  |  | $ | 749.1 |
Energy and Capacity Purchase Contracts |  | 127.0 |  |  | 253.8 |  |  | 236.6 |  |  | 182.2 |  |  | 799.6 |
Total |  | $ | 271.4 |  |  | $ | 486.1 |  |  | $ | 367.4 |  |  | $ | 423.8 |  |  | $ | 1,548.7 |
Contractual Commitments - OPCo |  | Less Than 1 Year |  | 2-3 Years |  | 4-5 Years |  | After 5 Years |  | Total
|  | (in millions)
Energy and Capacity Purchase Contracts |  | $ | 33.4 |  |  | $ | 66.6 |  |  | $ | 66.3 |  |  | $ | 102.6 |  |  | $ | 268.9 |
Contractual Commitments - PSO |  | Less Than 1 Year |  | 2-3 Years |  | 4-5 Years |  | After 5 Years |  | Total
|  | (in millions)
Fuel Purchase Contracts (a) |  | $ | 31.5 |  |  | $ | 36.6 |  |  | $ | — |  |  | $ | — |  |  | $ | 68.1 |
Energy and Capacity Purchase Contracts |  | 56.6 |  |  | 139.3 |  |  | 88.0 |  |  | 56.3 |  |  | 340.2 |
Total |  | $ | 88.1 |  |  | $ | 175.9 |  |  | $ | 88.0 |  |  | $ | 56.3 |  |  | $ | 408.3 |
Contractual Commitments - SWEPCo |  | Less Than 1 Year |  | 2-3 Years |  | 4-5 Years |  | After 5 Years |  | Total
|  | (in millions)
Fuel Purchase Contracts (a) |  | $ | 109.2 |  |  | $ | 48.1 |  |  | $ | — |  |  | $ | — |  |  | $ | 157.3 |
Energy and Capacity Purchase Contracts |  | 16.4 |  |  | 26.2 |  |  | 2.2 |  |  | — |  |  | 44.8 |
Total |  | $ | 125.6 |  |  | $ | 74.3 |  |  | $ | 2.2 |  |  | $ | — |  |  | $ | 202.1 |
(a)Represents contractual commitments to purchase coal, natural gas, uranium and other consumables as fuel for electric generation along with related transportation of the fuel.
Maximum Future Payments for Letters of Credit Issued Under the Uncommitted Facilities |
Company |  | Amount |  | Maturity
|  | (in millions) |  |
AEP |  | $ | 257.0 |  |  | January 2024 to November 2024
AEP Texas |  | 1.8 |  |  | July 2024
APCo |  | 6.3 |  |  | September 2024
I&M |  | 2.9 |  |  | September 2024

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