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Variable Interest Entities - Additional Information (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 USD ($) MW | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Jan. 31, 2016 USD ($)
Results of Operations |  |  |  |
Earnings attributable to non-controlling interest | $ 18,533 | $ 15,122 | $ 15,490 |
Financial Position |  |  |  |
Current assets | 475,543 | 410,978 |  |
Total assets | 10,252,605 | 9,257,377 | 8,666,885 |
Current liabilities | 1,230,760 | 890,370 |  |
Non-controlling interest in Valencia | 49,958 | 52,994 |  |
PNM |  |  |  |
Results of Operations |  |  |  |
Earnings attributable to non-controlling interest | 18,533 | 15,122 | 15,490 |
Financial Position |  |  |  |
Current assets | 377,837 | 345,645 |  |
Total assets | 6,813,065 | 6,272,166 |  |
Current liabilities | 839,194 | 692,155 |  |
Non-controlling interest in Valencia | $ 49,958 | 52,994 |  |
PNM | Valencia |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Number of megawatts purchased (in megawatts) | MW | 155 |  |  |
Payment for fixed charges | $ 20,300 | 19,500 | 19,800 |
Payment for variable charges | $ 5,200 | 1,900 | 1,900 |
Purchase price, percentage of the book value reduced by related indebtedness | 50.00% |  |  |
Purchase price, percentage of fair market value | 50.00% |  |  |
Results of Operations |  |  |  |
Operating revenues | $ 25,421 | 21,403 | 21,624 |
Operating expenses | 6,896 | 6,281 | 6,134 |
Other Misc (Income)/Expense | (8) | 0 | 0 |
Earnings attributable to non-controlling interest | 18,533 | 15,122 | $ 15,490 |
Financial Position |  |  |  |
Current assets | 3,422 | 3,429 |  |
Net property, plant and equipment | 47,253 | 50,094 |  |
Total assets | 50,675 | 53,523 |  |
Current liabilities | 717 | 529 |  |
Non-controlling interest in Valencia | $ 49,958 | $ 52,994 |  |
PNM | Maximum | Valencia |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Option to purchase a percentage of the plant or VIE (up to ) | 50.00% |  |  |
NM Capital | Coal Supply | San Juan Generating Station |  |  |  |
Financial Position |  |  |  |
Issuance in letters of credit | $ 30,300 |  |  | $ 30,300

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