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Variable Interest Entities - Schedule of Impact on Results of Operation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Variable Interest Entity [Line Items]
Depreciation and amortization			$ 361,095	$ 313,919
Interest Charges	$ 70,149	$ 59,664	205,713	169,254
Public Service Company of New Mexico
Variable Interest Entity [Line Items]
Depreciation and amortization			210,111	185,815
Interest Charges	33,805	27,852	95,596	78,848
Valencia | Public Service Company of New Mexico
Variable Interest Entity [Line Items]
Electric Operating Revenues	6,766	6,336	20,174	18,092
Depreciation and amortization	1,748	1,232	5,172	2,874
Interest Charges	4,922	5,014	14,840	15,078
Other	96	90	162	140
Net Earnings	$ 0	$ 0	$ 0	$ 0

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