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Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Services billings: | TXNM to PNM
Related Party Transaction [Line Items]
Amount of related party transaction	$ 35,317	$ 31,023	$ 67,404	$ 66,430
Services billings: | TXNM to TNMP
Related Party Transaction [Line Items]
Amount of related party transaction	14,109	12,885	27,485	27,121
Services billings: | PNM to TNMP
Related Party Transaction [Line Items]
Amount of related party transaction	86	109	165	190
Services billings: | TNMP to TXNM
Related Party Transaction [Line Items]
Amount of related party transaction	28	0	56	10
Services billings: | TXNM to NMRD
Related Party Transaction [Line Items]
Amount of related party transaction	0	0	0	66
Renewable energy purchases: | PNM from NMRD
Related Party Transaction [Line Items]
Amount of related party transaction	0	0	0	1,523
Interest billings: | TXNM to PNM
Related Party Transaction [Line Items]
Amount of related party transaction	76	25	84	39
Interest billings: | TXNM to TNMP
Related Party Transaction [Line Items]
Amount of related party transaction	41	22	186	179
Interest billings: | PNM to TXNM
Related Party Transaction [Line Items]
Amount of related party transaction	$ 132	$ 154	$ 265	$ 309

X

- Definition

Amount of transactions with related party during the financial reporting period.

+ References

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-Topic 850
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