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- Definition

Contract With Customer, Liability, Net

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- Definition

Contract With Customer, Net Liability Position

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- Definition

Public Utilities, Number Of Megawatts Available In Purchase Power Agreement

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- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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- Definition

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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- Definition

Amount of obligation to return cash collateral under master netting arrangements that have not been offset against derivative assets.

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- Definition

Amount of right to receive cash collateral under master netting arrangements that have not been offset against derivative liabilities.

+ References

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- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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- Definition

The amount of cash or securities placed with a broker or counterparty as security for a trading or derivatives securities position which was partially obtained with funds provided by the broker dealer.

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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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Fair Value of Derivative and Other Financial Instruments - Narrative (Details)		4 Months Ended
	Apr. 23, 2024 MW	Sep. 30, 2023 MW	Sep. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Debt Securities, Available-for-sale [Line Items]
Obligations to return cash			$ 200,000	$ 200,000
PNM
Debt Securities, Available-for-sale [Line Items]
Amounts recognized for right to reclaim cash			0	0
Cash collateral under margin arrangements			100,000	200,000
Contractual liability			0	0
Cash collateral			0	0
Net liability position			0	0
Available-for-sale debt securities			71,262,000
PNM \| Recurring
Debt Securities, Available-for-sale [Line Items]
Available-for-sale debt securities			412,298,000
PNM \| Nuclear Decommissioning Trust \| Recurring
Debt Securities, Available-for-sale [Line Items]
Available-for-sale debt securities			386,800,000	361,000,000.0
PNM \| SJGS Decommissioning Trust \| Recurring
Debt Securities, Available-for-sale [Line Items]
Available-for-sale debt securities			5,900,000	12,300,000
PNM \| Mine Reclamation Trust \| Recurring
Debt Securities, Available-for-sale [Line Items]
Available-for-sale debt securities			60,800,000	71,100,000
PNM \| Commodity derivatives \| Designated as Hedging Instrument
Debt Securities, Available-for-sale [Line Items]
Other current assets			0	826,000
Other current liabilities			$ 0	0
PNM \| Portfolio One
Debt Securities, Available-for-sale [Line Items]
Number of megawatts available in purchase power agreement (in megawatts) \| MW	150	85
PNM \| Portfolio Two
Debt Securities, Available-for-sale [Line Items]
Number of megawatts available in purchase power agreement (in megawatts) \| MW	100	50
PNM \| Fuel and purchased power costs \| Commodity derivatives \| Designated as Hedging Instrument
Debt Securities, Available-for-sale [Line Items]
Other current assets				800,000
Other current liabilities				$ 0