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Fair Value of Derivative and Other Financial Instruments - Schedule of Commodity Contract Volume Positions (Details) | 6 Months Ended | 12 Months Ended
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Jun. 30, 2022 MMBTU | Jun. 30, 2022 MWh | Dec. 31, 2021 MMBTU | Dec. 31, 2021 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) | 387,500 | 60,000 | 0 | 122,400

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