Consolidated Statements of Comprehensive Income - PNMR - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net Earnings	$ 106,879	$ 185,180	$ 211,847
Unrealized Gains on Available-for-Sale Securities:
Unrealized holding gains (losses) arising during the period, net of income tax (expense) benefit of $(2,928), $490, and $478	8,601	(1,438)	(1,403)
Reclassification adjustment for (gains) included in net earnings, net of income tax expense of $1,828, $972, and $2,480	(5,371)	(2,855)	(7,285)
Pension Liability Adjustment:
Experience gains (losses), net of income tax (expense) benefit of $(353), $1,159, and $(3,076)	1,036	(3,406)	9,035
Reclassification adjustment for amortization of experience losses recognized as net periodic benefit cost, net of income tax (benefit) of $(1,212), $(1,804), and $(2,120)	3,564	5,300	6,228
Fair Value Adjustment for Cash Flow Hedges:
Change in fair market value, net of income tax (expense) of $3,933, $(3,121), and $(458)	(11,550)	9,164	1,346
Reclassification adjustment for (gains) losses included in net earnings, net of income tax expense (benefit) of $(2,359), $299, and $229	6,928	(877)	(674)
Total Other Comprehensive Income	3,208	5,888	7,247
Comprehensive Income	110,087	191,068	219,094
Comprehensive (Income) Attributable to Valencia Non-controlling Interest	(18,533)	(15,122)	(15,490)
Preferred Stock Dividends Requirements	(528)	(528)	(528)
Comprehensive Income Attributable to PNMR	$ 91,026	$ 175,418	$ 203,076