Class Of Warrant Or Right, Amount Of Investment Called By Warrants Or Rights

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- Definition

This item represents the ownership percentage of all cost-method investments.

+ References

No definition available.

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- Definition

Equity Method Investment, Number Of Additional Investments

+ References

No definition available.

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- Definition

Equity Method Investment, Number Of Board Members

+ References

No definition available.

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- Definition

Equity Method Investment, Ownership, Shares

+ References

No definition available.

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- Definition

Equity Method Investment, Right To Designate, Number Of Board Members

+ References

No definition available.

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- Definition

Equity Method Investments, Commitment, Maximum

+ References

No definition available.

+ Details

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- Definition

Equity Method Investments, Number Of Performance-Based Milestones

+ References

No definition available.

+ Details

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- Definition

Payments To Acquire Equity Method Investments, Per Investment

+ References

No definition available.

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- Definition

Power participation ratio

+ 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
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- Definition

Carrying value of the regulatory asset that represents capitalized stranded costs that have been securitized (financed with debt) and are expected to be recoverable through a transition charge after one year (or beyond the operating cycle if longer). A transition charge is a charge approved by a regulator that allows deregulated utilities to recover investments in certain assets, such as power plants, over a transition period leading into a deregulated market.

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VARIABLE INTEREST ENTITIES AND EQUITY METHOD INVESTMENTS - Narrative (Details) shares in Millions, $ in Millions	1 Months Ended
	Aug. 31, 2025 USD ($) milestone investment	Sep. 30, 2026 USD ($) boardMember shares	Dec. 31, 2025 USD ($)	Nov. 30, 2025
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Securitized assets		$ 2,221	$ 933
Equity method investments		1,404	1,252
Gigawatt.AI
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Payments to acquire equity method investments	$ 100
Maximum commitment	$ 100
Number of separate performance-based milestones \| milestone	4,000,000
Number of investments \| investment	4,000,000
Each additional investments, specified performance milestones	$ 25
Equity method investments		$ 200
Number of shares of voting common stock (in shares) \| shares		20
Ownership percentage		21.00%
Equity method investment, right to designate, number of board members \| boardMember		1
Equity method investment, number of board members \| boardMember		3
Gigawatt.AI \| Gigawatt AI Warrant
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Amount of investment called by warrant	$ 50
APPALACHIAN POWER COMPANY
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Securitized assets		$ 1,406	$ 78
Variable Interest Entity, Primary Beneficiary \| APPALACHIAN POWER COMPANY
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Securitized assets		1,300
Variable Interest Entity, Primary Beneficiary \| APPALACHIAN POWER COMPANY \| Location, Statement of Financial Position, Balance [Axis]: us-gaap:LongTermDebtCurrent
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Securitization bonds		35
Variable Interest Entity, Primary Beneficiary \| APPALACHIAN POWER COMPANY \| Location, Statement of Financial Position, Balance [Axis]: us-gaap:LongTermDebtNoncurrent
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Securitization bonds		$ 1,300
Variable Interest Entity, Not Primary Beneficiary \| OHIO POWER COMPANY
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Cost method investment ownership percentage			4.30%	4.30%
Power participation ratio			19.93%	19.93%