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Regulatory and Rate Matters - PVNGS Leased Interest Abandonment Application (Details) | Apr. 02, 2021 lease MW | Nov. 13, 2020 MW | Jul. 29, 2020 MW
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Public Utilities, General Disclosures [Line Items] |  |  |
Regulatory time frame for proposed PPAs and battery storage agreements | 6 months |  |
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) |  |  | 650
Number of megawatts in battery storage facilities (in megawatts) |  |  | 300
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 | 200 |
Number of megawatts in battery storage facilities (in megawatts) | 40 | 100 |
Public Service Company of New Mexico | Replacement Resource Portfolio Two |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Solar distributed generation (in mw) |  | 100 |
Number of megawatts in battery storage facilities (in megawatts) | 100 | 30 |
Public Service Company of New Mexico | Replacement Resource Portfolio Three |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Solar distributed generation (in mw) | 300 |  |
Number of megawatts in battery storage facilities (in megawatts) | 150 |  |
NMPRC | Public Service Company of New Mexico |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Solar generation capacity, amount requested for approval to abandon, in megawatts | 114 |  |
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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