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Regulatory and Rate Matters - Meta Platforms, Inc. Data Center Project (Details) - MW		12 Months Ended
	Jul. 24, 2023	Dec. 31, 2023
PNMR Development
Public Utilities, General Disclosures [Line Items]
Ownership percentage		50.00%
PNM
Public Utilities, General Disclosures [Line Items]
Megawatts procured (in megawatts)		180
PNM | Solar Power
Public Utilities, General Disclosures [Line Items]
Megawatts procured (in megawatts)	140
PNM | Battery Storage
Public Utilities, General Disclosures [Line Items]
Megawatts procured (in megawatts)	50

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Public Utilities, Megawatts Procured

+ References

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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 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481687/323-10-50-3

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