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Regulatory and Rate Matters - Advanced Metering Infrastructure Application and Facebook Data Center Project (Details) $ in Millions | Jul. 08, 2016 service_rate MW | Feb. 26, 2016 USD ($)
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Public Utilities, General Disclosures [Line Items] |  |
Number of requested service rates | service_rate | 2 |
Public Service Company of New Mexico [Member] | Advanced metering infrastructure [Member] |  |
Public Utilities, General Disclosures [Line Items] |  |
Application to seek recovery of costs of project | $ |  | $ 87.2
Application to seek recovery of undepreciated investment | $ |  | $ 33.0
PNMR Development [Member] |  |
Public Utilities, General Disclosures [Line Items] |  |
Solar distributed generation (in mw) | MW | 30 |
Solar capacity (in mw) | MW | 10 |

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