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Regulatory and Rate Matters - San Juan Generating Station Unit 1 Outage (Details) - San Juan Generating Station $ in Millions | Jun. 30, 2021 USD ($)
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San Juan Generating Station Owners | Insurance Deductible |
Public Utilities, Commitments And Contingencies [Line Items] |
Estimate of possible loss | $ 2.0
Public Service Company of New Mexico | Insurance Deductible |
Public Utilities, Commitments And Contingencies [Line Items] |
Estimate of possible loss | $ 1.0
Public Service Company of New Mexico | San Juan Generating Station Unit 1 |
Public Utilities, Commitments And Contingencies [Line Items] |
Noncontrolling interest, ownership percentage by noncontrolling owners | 50.00%

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