Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
PNMR Development
Related Party Transaction [Line Items]
Ownership	50.00%
Services billings: \| PNMR to PNM
Related Party Transaction [Line Items]
Amount of related party transaction	$ 31,539	$ 27,693
Services billings: \| PNMR to TNMP
Related Party Transaction [Line Items]
Amount of related party transaction	12,413	10,304
Services billings: \| PNM to TNMP
Related Party Transaction [Line Items]
Amount of related party transaction	65	93
Services billings: \| TNMP to PNMR
Related Party Transaction [Line Items]
Amount of related party transaction	35	35
Services billings: \| PNMR to NMRD
Related Party Transaction [Line Items]
Amount of related party transaction	82	64
Renewable energy purchases: \| PNM from NMRD
Related Party Transaction [Line Items]
Amount of related party transaction	2,361	2,621
Interconnection and facility study billings: \| PNM from NMRD
Related Party Transaction [Line Items]
Amount of related party transaction	0	0
Interconnection and facility study billings: \| PNM to PNMR
Related Party Transaction [Line Items]
Amount of related party transaction	0	0
Interconnection and facility study billings: \| NMRD to PNM
Related Party Transaction [Line Items]
Amount of related party transaction	0	0
Interest billings: \| PNMR to PNM
Related Party Transaction [Line Items]
Amount of related party transaction	3	7
Interest billings: \| PNMR to TNMP
Related Party Transaction [Line Items]
Amount of related party transaction	11	45
Interest billings: \| PNM to PNMR
Related Party Transaction [Line Items]
Amount of related party transaction	130	23
Income tax sharing payments: \| PNMR to PNM
Related Party Transaction [Line Items]
Amount of related party transaction	0	0
Income tax sharing payments: \| TNMP to PNMR
Related Party Transaction [Line Items]
Amount of related party transaction	$ 0	$ 0

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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-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 3
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Amount of transactions with related party during the financial reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
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+ References

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