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Goodwill (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Apr. 01, 2020	Apr. 01, 2018
Schedule of Goodwill and Other Intangible Assets [Line Items]
Goodwill	$ 278,297	$ 278,297	$ 278,297
Texas-New Mexico Power Company
Schedule of Goodwill and Other Intangible Assets [Line Items]
Goodwill	226,665	226,665		$ 226,700
Percentage of fair value in excess of carrying amount				38.00%
Public Service Company of New Mexico
Schedule of Goodwill and Other Intangible Assets [Line Items]
Goodwill	$ 51,632	$ 51,632			$ 51,600
Percentage of fair value in excess of carrying amount					19.00%

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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- Definition

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