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Commitments and Contingencies - Texas Winter Storm (Details) - Texas-New Mexico Power Company $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 USD ($) lawsuit | Dec. 31, 2021 USD ($)
Loss Contingencies [Line Items] |  |
Regulatory asset, allowance for credit loss | $ | $ 0.8 | $ 0.8
Number of law suits | lawsuit | 2 |

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