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Regulatory and Rate Matters - FFPAC Continuation Application (Details)	12 Months Ended
	Dec. 31, 2018
Public Service Company of New Mexico
Public Utilities, General Disclosures [Line Items]
Frequency of FPPAC filings	4 years

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- Definition

Public Utilities, Frequency of FPPAC filings

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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