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Financing - Schedule of Short-Term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Short-term Debt [Line Items]
Short-term debt	$ 409,400	$ 232,000
PNM
Short-term Debt [Line Items]
Short-term debt	210,900	185,900
Texas-New Mexico Power Company
Short-term Debt [Line Items]
Short-term debt	100,000	36,700
PNM Revolving Credit Facility | PNM
Short-term Debt [Line Items]
Short-term debt	170,900	145,900
PNM New Mexico Credit Facility | PNM
Short-term Debt [Line Items]
Short-term debt	40,000	40,000
TNMP Revolving Credit Facility | Texas-New Mexico Power Company
Short-term Debt [Line Items]
Short-term debt	100,000	36,700
PNMR Revolving Credit Facility
Short-term Debt [Line Items]
Short-term debt	$ 98,500	$ 9,400

X

- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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No definition available.

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