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Equity Method Investment - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($) MW
NMRD
Business Acquisition [Line Items]
Renewable energy capacity in operating (in mw) | MW	135.1
PNMR Development | NMRD
Business Acquisition [Line Items]
Contribution to construction activities | $	$ 11.5
PNMR Development | NMRD
Business Acquisition [Line Items]
Ownership	50.00%
AEP OnSite Partners | NMRD
Business Acquisition [Line Items]
Ownership	50.00%

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

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI https://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

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