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v3.23.3

Commitments, Guarantees and Contingencies (Details) $ in Millions | Sep. 30, 2023 USD ($)
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Maximum Potential Loss [Abstract] |
Max Potential Loss on Master Lease Agreements | $ 44.8
AEP Texas Inc. [Member] |
Maximum Potential Loss [Abstract] |
Max Potential Loss on Master Lease Agreements | 10.9
Appalachian Power Co [Member] |
Maximum Potential Loss [Abstract] |
Max Potential Loss on Master Lease Agreements | 5.6
Indiana Michigan Power Co [Member] |
Maximum Potential Loss [Abstract] |
Max Potential Loss on Master Lease Agreements | 4.2
Ohio Power Co [Member] |
Maximum Potential Loss [Abstract] |
Max Potential Loss on Master Lease Agreements | 6.9
Public Service Co Of Oklahoma [Member] |
Maximum Potential Loss [Abstract] |
Max Potential Loss on Master Lease Agreements | 4.7
Southwestern Electric Power Co [Member] |
Maximum Potential Loss [Abstract] |
Max Potential Loss on Master Lease Agreements | 5.3
Letters of Credit [Member] |
Maximum Future Payments for Letters of Credit [Abstract] |
Maximum Future Payments for Letters of Credit Issued Under the Uncommitted Facility | 249.1
Commitments, Guarantees and Contingencies (Textuals) [Abstract] |
Letters of Credit Limit | 1,200.0
Uncommitted Facility | 450.0
Letters of Credit [Member] | AEP Texas Inc. [Member] |
Maximum Future Payments for Letters of Credit [Abstract] |
Maximum Future Payments for Letters of Credit Issued Under the Uncommitted Facility | 1.8
Letters of Credit [Member] | Appalachian Power Co [Member] |
Maximum Future Payments for Letters of Credit [Abstract] |
Maximum Future Payments for Letters of Credit Issued Under the Uncommitted Facility | 6.3
Letters of Credit [Member] | Indiana Michigan Power Co [Member] |
Maximum Future Payments for Letters of Credit [Abstract] |
Maximum Future Payments for Letters of Credit Issued Under the Uncommitted Facility | 2.9
March 2027 | Letters of Credit [Member] |
Commitments, Guarantees and Contingencies (Textuals) [Abstract] |
Revolving Credit Facilities | 4,000.0
March 2024 | Letters of Credit [Member] |
Commitments, Guarantees and Contingencies (Textuals) [Abstract] |
Revolving Credit Facilities | $ 1,000.0

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- Definition Commitments, Guarantees and Contingencies. + References No definition available. + Details
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- Definition Amount of revolving credit facilities. + References No definition available. + Details
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- Definition Maximum future payments for Letters of Credit issued under the uncommitted facility. + References No definition available. + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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