Consolidated Statements of Comprehensive Income - PNMR - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net Earnings	$ 185,180	$ 211,847	$ 187,316
Unrealized Gains on Available-for-Sale Securities:
Unrealized holding gains (losses) arising during the period, net of income tax (expense) benefit of $490, $478, and $(5,736)	(1,438)	(1,403)	16,850
Reclassification adjustment for (gains) included in net earnings, net of income tax expense of $972, $2,480, and $2,412	(2,855)	(7,285)	(7,085)
Pension Liability Adjustment:
Experience gains (losses), net of income tax (expense) benefit of $1,159, $(3,076), and $(1,562)	(3,406)	9,035	4,587
Reclassification adjustment for amortization of experience losses recognized as net periodic benefit cost, net of income tax (benefit) of $(1,804), $(2,120), and $(2,108)	5,300	6,228	6,192
Fair Value Adjustment for Cash Flow Hedges:
Change in fair market value, net of income tax (expense) of $(3,121), $(458), and $(323)	9,164	1,346	948
Reclassification adjustment for (gains) included in net earnings, net of income tax expense of $299, $229, and $442	(877)	(674)	(1,298)
Total Other Comprehensive Income	5,888	7,247	20,194
Comprehensive Income	191,068	219,094	207,510
Comprehensive (Income) Attributable to Valencia Non-controlling Interest	(15,122)	(15,490)	(14,013)
Preferred Stock Dividends Requirements	(528)	(528)	(528)
Comprehensive Income Attributable to PNMR	$ 175,418	$ 203,076	$ 192,969