Fair Value of Derivative and Other Financial Instruments - Schedule of Commodity Contract Volume Positions (Details)	3 Months Ended	9 Months Ended
Mar. 31, 2022 MMBTU	Mar. 31, 2022 MWh	Sep. 30, 2022 MMBTU	Sep. 30, 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	122,400	0	302,880

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.

No definition available.

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