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- Definition

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+ References

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- Definition

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- Definition

Other Costs Related To Regulatory Disallowance

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- Definition

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- Definition

Public Utilities, Annual Funding Post-Term Reclamation Trust, Remainder Of Year

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- Definition

Public Utilities, Annual Funding Post-Term Reclamation Trust, Year One

+ References

No definition available.

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- Definition

Public Utilities, Annual Funding Post-Term Reclamation Trust, Year Two

+ References

No definition available.

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- Definition

Public Utilities, Commitments And Contingencies [Line Items]

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No definition available.

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- Definition

Reclamation Costs, Redemption Percentage

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- Definition

Reclamation Trust Funding, Remainder Of The Year

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No definition available.

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- Definition

Reclamation Trust Funding, Year One

+ References

No definition available.

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- Definition

Reclamation Trust Funding, Year Two

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No definition available.

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- Definition

The increase (decrease) during the reporting period in regulated liabilities. Regulated liabilities are created when regulatory agency permits an entity to defer revenues to the balance sheet.

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- Definition

Amount of loss contingency liability.

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- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

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Commitments and Contingencies - Coal Supply (Details) - USD ($)	3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
San Juan Generating Station
Public Utilities, Commitments And Contingencies [Line Items]
Other costs	$ 900,000		$ 900,000
San Juan Generating Station \| Underground
Public Utilities, Commitments And Contingencies [Line Items]
Increase in regulatory liabilities	200,000		200,000
San Juan Generating Station \| Surface
Public Utilities, Commitments And Contingencies [Line Items]
Increase in regulatory liabilities	$ 200,000		$ 200,000
San Juan Generating Station \| Maximum
Public Utilities, Commitments And Contingencies [Line Items]
Reclamation costs percentage				9.755%
San Juan Generating Station \| Minimum
Public Utilities, Commitments And Contingencies [Line Items]
Reclamation costs percentage				9.096%
Public Service Company of New Mexico \| Four Corners CSA
Public Utilities, Commitments And Contingencies [Line Items]
Annual funding post-term reclamation trust				$ 0
Reclamation trust funding, 2026		$ 500,000
Reclamation trust funding, 2027		500,000
Reclamation trust funding, 2028		500,000
Public Service Company of New Mexico \| Underground \| Loss on long-term purchase commitment
Public Utilities, Commitments And Contingencies [Line Items]
Loss contingency accrual		56,900,000		55,200,000
Public Service Company of New Mexico \| Surface \| Loss on long-term purchase commitment
Public Utilities, Commitments And Contingencies [Line Items]
Loss contingency accrual		9,300,000		20,800,000
Public Service Company of New Mexico \| San Juan Generating Station \| Loss on long-term purchase commitment
Public Utilities, Commitments And Contingencies [Line Items]
Annual funding post-term reclamation trust				$ 7,000,000.0
Annual funding post-term reclamation trust, remainder of year		3,400,000
Annual funding post-term reclamation trust, year one		400,000
Annual funding post-term reclamation trust, year two		4,700,000
Public Service Company of New Mexico \| San Juan Generating Station and Four Corners \| Mine Reclamation Trust
Public Utilities, Commitments And Contingencies [Line Items]
Customer reclamation funding cost		100,000,000.0
San Juan Generating Station \| Public Service Company of New Mexico \| Underground \| Loss on long-term purchase commitment
Public Utilities, Commitments And Contingencies [Line Items]
Estimate of possible loss		63,100,000
San Juan Generating Station \| Public Service Company of New Mexico \| Surface \| Loss on long-term purchase commitment
Public Utilities, Commitments And Contingencies [Line Items]
Estimate of possible loss		17,500,000
San Juan Generating Station \| Coal supply
Public Utilities, Commitments And Contingencies [Line Items]
Cash used to support bank letter or credit arrangement		19,300,000
San Juan Generating Station \| Coal supply \| NM Capital
Public Utilities, Commitments And Contingencies [Line Items]
Requirement to post reclamation bonds		118,700,000
Cash used to support bank letter or credit arrangement		$ 19,300,000