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Regulatory and Rate Matters - FERC Compliance (Details) $ in Millions			3 Months Ended
	Nov. 21, 2022 USD ($)	May 17, 2022 delegatedLetterOrder	Dec. 31, 2022 USD ($)
Public Utilities, General Disclosures [Line Items]
Number of delegated letter orders | delegatedLetterOrder		2
PNM
Public Utilities, General Disclosures [Line Items]
Time-value refunds	$ 8.1
Payment of time-value refunds			$ 8.1

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- Definition

Number Of Delegated Letter Orders

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- Definition

Public Utilities, Payment Of Time-Value Refunds

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- Definition

Public Utilities, Time-Value Refunds

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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.

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No definition available.

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- Details

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