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Regulatory and Rate Matters - PVNGS Leased Interest Abandonment Application (Details) |  |  |  |  |  | 6 Months Ended | 12 Months Ended |  |  |  |
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Dec. 05, 2022 MW | Sep. 08, 2022 | Aug. 23, 2022 | Apr. 02, 2021 lease MW | Nov. 15, 2015 power_purchase_agreement numberOfAMIMeter batteryStorageAgreement | Dec. 31, 2021 power_purchase_agreement | Dec. 31, 2021 power_purchase_agreement | Oct. 14, 2022 MW | Sep. 02, 2022 MW | Feb. 14, 2022 MW | Jul. 29, 2020 MW
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |
Regulatory time frame for proposed PPAs and battery storage agreements |  |  |  | 6 months |  |  |  |  |  |  |
Number of purchase power agreements | power_purchase_agreement |  |  |  |  |  | 3 |  |  |  |  |
Public Service Company of New Mexico |  |  |  |  |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of leases under which lease term was extended | lease |  |  |  | 5 |  |  |  |  |  |  |
Solar distributed generation (in mw) |  |  |  |  |  |  |  | 200 |  |  | 650
Number of purchase power agreements | power_purchase_agreement |  |  |  |  | 2 |  | 3 |  |  |  |
Number of battery storage agreements | batteryStorageAgreement |  |  |  |  | 3 |  |  |  |  |  |
Number of megawatts in battery storage facilities (in megawatts) |  |  |  |  |  |  |  | 100 |  |  | 300
Total number of agreements | numberOfAMIMeter |  |  |  |  | 5 |  |  |  |  |  |
Filing period, extension |  | 2 days | 45 days |  |  |  |  |  |  |  |
Filing period, with extension |  | 12 days |  |  |  |  |  |  |  |  |
Public Service Company of New Mexico | NM 2022 Rate Case |  |  |  |  |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |
Megawatt repurchase (in megawatts) | 64.1 |  |  |  |  |  |  |  |  |  |
Public Service Company of New Mexico | Leased Interest Termination On January 15, 2023 |  |  |  |  |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of leases under which lease term was extended | lease |  |  |  | 4 |  |  |  |  |  |  |
Public Service Company of New Mexico | Replacement Resource Portfolio One |  |  |  |  |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |
Solar distributed generation (in mw) |  |  |  | 150 |  |  |  |  |  | 150 |
Number of megawatts in battery storage facilities (in megawatts) |  |  |  | 40 |  |  |  |  |  | 40 |
Public Service Company of New Mexico | Replacement Resource Portfolio Two |  |  |  |  |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of megawatts in battery storage facilities (in megawatts) |  |  |  | 100 |  |  |  |  |  | 100 |
Public Service Company of New Mexico | Replacement Resource Portfolio Three |  |  |  |  |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |
Solar distributed generation (in mw) |  |  |  | 300 |  |  |  |  |  | 300 |
Number of megawatts in battery storage facilities (in megawatts) |  |  |  | 150 |  |  |  |  | 300 | 150 |
NMPRC | Public Service Company of New Mexico | Leased Interest Termination On January 15, 2023 |  |  |  |  |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |
Solar distributed generation (in mw) |  |  |  | 104 |  |  |  |  |  |  |
NMPRC | Public Service Company of New Mexico | Leased Interest Termination On January 15, 2024 |  |  |  |  |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |
Solar distributed generation (in mw) |  |  |  | 10 |  |  |  |  |  |  |

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