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Fair Value of Derivative and Other Financial Instruments - Schedule of Commodity Contract Volume Positions (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2023 MMBTU	Mar. 31, 2023 MWh	Dec. 31, 2022 MMBTU	Dec. 31, 2022 MWh
Commodity derivatives | Designated as Hedging Instrument | Public Service Company of New Mexico
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Economic Hedges (in mmbtu and mwh)	0	651,375	0	432,200

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Nominal energy measure used to calculate payments on a derivative instrument.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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