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Variable Interest Entities - Schedule of Impact on Balance Sheet (Details) - USD ($) | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Variable Interest Entity [Line Items] |  |
Regulatory assets | $ 73,046,000 | $ 20,265,000
Current maturities of long-term debt | 280,169,000 | 184,793,000
Long-Term Debt | 4,241,642,000 | 3,892,594,000
PNM |  |
Variable Interest Entity [Line Items] |  |
Regulatory assets | 72,996,000 | 18,333,000
Restricted Cash (included in Other Deferred Charges) | 0 | 0
Current maturities of long-term debt | 200,222,000 | 184,793,000
Long-Term Debt | 2,061,558,000 | $ 1,816,107,000
ETBC I | PNM |  |
Variable Interest Entity [Line Items] |  |
Regulatory assets | 2,724,000 |
Restricted Cash (included in Other Deferred Charges) | 1,728,000 |
Securitized Cost (included in Deferred Regulatory Assets) | 340,629,000 |
Current maturities of long-term debt | 2,529,000 |
Accrued Interest | 2,502,000 |
Long-Term Debt | $ 338,521,000 |

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- Definition Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are expected to be recovered through revenue sources within one year or the normal operating cycle, if longer. Such costs are capitalized if they meet both of the following criteria: a. It is probable that future revenue in an amount at least equal to the capitalized cost will result from inclusion of that cost in allowable costs for rate-making purposes. b. Based on available evidence, the future revenue will be provided to permit recovery of the previously incurred cost rather than to provide for expected levels of similar future costs. If the revenue will be provided through an automatic rate-adjustment clause, this criterion requires that the regulator's intent clearly be to permit recovery of the previously incurred cost. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 980 -SubTopic 340 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481878/980-340-50-1 + Details
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