AEP's share of ETT's cumulative revenues, subject to review, based upon interim rate increases.

No definition available.

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- Definition

Public Utilities, Requested Rate Increase (Decrease), Amount Related To Depreciation Rates

+ References

No definition available.

+ Details

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- Definition

Public Utilities, Requested Rate Increase (Decrease), Amount Related To Proposed ROE And Capital Structure

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Percentage of public utility's requested debt to capital, including debt and equity.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
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Period Type:	duration

- Definition

Percentage of public utility's requested equity to capital, including debt and equity.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
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Period Type:	duration

- Definition

Amount of public utility's requested rate increase (decrease) with regulatory agency.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Percentage of public utility's requested return on equity.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
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- Details

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Namespace Prefix:
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- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
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- Details

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RATE MATTERS - ETT Rate Matters (Details) - USD ($) $ in Millions	1 Months Ended		3 Months Ended
	Apr. 30, 2025	Jan. 31, 2025	Mar. 31, 2025
ETT Interim Transmission Rates \| ETT
Public Utilities, General Disclosures [Line Items]
Aep share of ett cumulative revenues subject to review			$ 1,900
ETT Interim Transmission Rates \| ETT
Public Utilities, General Disclosures [Line Items]
Subsidiary, ownership percentage, parent			50.00%
2025 ETT Base Rate Case
Public Utilities, General Disclosures [Line Items]
Requested annual base rate increase		$ 57
Requested return on equity		10.60%
Requested debt capital structure		55.00%
Requested equity capital structure		45.00%
2025 ETT Base Rate Case \| Subsequent Event
Public Utilities, General Disclosures [Line Items]
Requested rate increase related to depreciation rates	$ 37
Requested rate increase related to ROE and capital structure	$ 32