Asset Acquisition, Percentage of Shares Acquired

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- Definition

Proceeds From Noncontrolling Interests, Gross

+ References

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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/2009/role/commonPracticeRef
-Topic 805
-SubTopic 50
-Name Accounting Standards Codification
-Section 15
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480123/805-50-15-3

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

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- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-2

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- Definition

The charge against earnings resulting from the write down of long lived assets other than goodwill due to the difference between the carrying value and lower fair value.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482099/360-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

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- Definition

The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 13
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-13

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ACQUISITIONS, DISPOSITIONS AND IMPAIRMENTS - Narrative (Details) $ in Millions	1 Months Ended	3 Months Ended			6 Months Ended
	Jan. 31, 2025 USD ($)	Jun. 30, 2026 USD ($)	Mar. 31, 2026 USD ($)	Jun. 30, 2025 USD ($) facility	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($) facility	May 31, 2026	May 31, 2025
Asset Acquisition, Contingent Consideration [Line Items]
Asset Impairments and Other Related Charges		$ 0		$ 0	$ 31	$ 0
AEP TRANSMISSION COMPANY, LLC \| Midwest Transmission Holdings
Asset Acquisition, Contingent Consideration [Line Items]
Ownership percentage selling	19.90%
Proceeds from noncontrolling interests, gross	$ 2,820
SOUTHWESTERN ELECTRIC POWER COMPANY
Asset Acquisition, Contingent Consideration [Line Items]
Asset Impairments and Other Related Charges		$ 0	$ 31	$ 0	$ 31	$ 0
Grover Hill Wind Project \| APPALACHIAN POWER COMPANY
Asset Acquisition, Contingent Consideration [Line Items]
Percentage of shares acquired							100.00%
Oregon Clean Energy Center \| INDIANA MICHIGAN POWER COMPANY
Asset Acquisition, Contingent Consideration [Line Items]
Percentage of shares acquired			100.00%
Pixley Solar Energy, LLC \| PUBLIC SERVICE COMPANY OF OKLAHOMA
Asset Acquisition, Contingent Consideration [Line Items]
Percentage of shares acquired								100.00%
Flat Ridge IV Wind, LLC \| PUBLIC SERVICE COMPANY OF OKLAHOMA
Asset Acquisition, Contingent Consideration [Line Items]
Percentage of shares acquired				100.00%		100.00%
Green Country Energy, LLC \| PUBLIC SERVICE COMPANY OF OKLAHOMA
Asset Acquisition, Contingent Consideration [Line Items]
Percentage of shares acquired				100.00%		100.00%
Three Electric Generation Facilities \| PUBLIC SERVICE COMPANY OF OKLAHOMA
Asset Acquisition, Contingent Consideration [Line Items]
Number of properties \| facility				3		3
Payments to acquire facilities						$ 1,400