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Regulatory and Rate Matters - Application for Certificate of Convenience and Necessity (Details) - San Juan Generating Station Units 2 and 3 [Member] - Clean Air Act, SNCR [Member] - Public Service Company of New Mexico [Member] - MW | Apr. 26, 2016 | Jun. 30, 2015
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Public Utilities, General Disclosures [Line Items] |  |
Newly-identified replacement gas plant (in mw) | 80 | 187
Additional peaking capacity (in mw) | 40 |

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- Definition Public Utilities, Newly Identified Replacement Gas-fired Aeroderivative Generation, per Unit, in Megawatts + References No definition available. + Details
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