Condensed Consolidated Statements of Earnings (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Electric Operating Revenues:
Contracts with customers	$ 343,075	$ 314,917	$ 666,057	$ 630,614
Alternative revenue programs	4,466	5,844	4,892	6,480
Other electric operating revenue	10,108	9,467	20,322	42,778
Total electric operating revenues	357,649	330,228	691,271	679,872
Operating Expenses:
Administrative and general	50,453	42,833	96,485	95,170
Regulatory disallowances and restructuring costs	0	149,254	0	150,599
Depreciation and amortization	70,022	66,065	138,995	131,421
Transmission and distribution costs	18,034	19,195	35,320	35,872
Taxes other than income taxes	20,782	19,809	42,047	40,317
Total operating expenses	286,499	423,843	572,383	736,764
Operating income (loss)	71,150	(93,615)	118,888	(56,892)
Other Income and Deductions:
Interest income	3,071	3,460	6,494	7,048
Gains (losses) on investment securities	21,620	4,599	(11,229)	18,613
Other income	4,390	3,350	6,706	6,795
Other (deductions)	(3,307)	(3,117)	(6,780)	(6,369)
Net other income and deductions	25,774	8,292	(4,809)	26,087
Interest Charges	31,088	29,791	61,522	61,425
Earnings (Loss) before Income Taxes	65,836	(115,114)	52,557	(92,230)
Income Taxes (Benefits)	4,275	(42,831)	2,395	(41,608)
Net Earnings (Loss)	61,561	(72,283)	50,162	(50,622)
(Earnings) Attributable to Valencia Non-controlling Interest	(3,940)	(3,499)	(7,669)	(6,328)
Preferred Stock Dividend Requirements of Subsidiary	(132)	(132)	(264)	(264)
Net Earnings (Loss) Available for PNM Common Stock	$ 57,489	$ (75,914)	$ 42,229	$ (57,214)
Net Earnings (Loss) Attributable to PNMR per Common Share:
Basic (dollars per share)	$ 0.72	$ (0.95)	$ 0.53	$ (0.72)
Diluted (dollars per share)	0.72	(0.95)	0.53	(0.72)
Dividends Declared per Common Share (dollars per share)	$ 0.308	$ 0.290	$ 0.615	$ 0.580
Cost of energy
Electric Operating Revenues:
Total electric operating revenues	$ 357,649	$ 330,228	$ 691,271	$ 679,872
Operating Expenses:
Energy costs	93,863	83,782	192,573	205,408
Energy production costs
Operating Expenses:
Energy costs	33,345	42,905	66,963	77,977
PNM
Electric Operating Revenues:
Contracts with customers	248,151	228,061	483,909	464,002
Alternative revenue programs	2,529	691	4,690	756
Other electric operating revenue	10,108	9,467	20,322	42,778
Total electric operating revenues	260,788	238,219	508,921	507,536
Operating Expenses:
Administrative and general	45,051	40,237	86,719	87,639
Regulatory disallowances and restructuring costs	0	149,254	0	150,599
Depreciation and amortization	41,763	39,811	83,212	79,036
Transmission and distribution costs	11,275	11,838	22,190	22,471
Taxes other than income taxes	11,886	11,285	24,241	23,295
Total operating expenses	211,204	354,196	425,733	599,221
Operating income (loss)	49,584	(115,977)	83,188	(91,685)
Other Income and Deductions:
Interest income	3,147	3,530	6,643	7,187
Gains (losses) on investment securities	21,620	4,599	(11,229)	18,613
Other income	1,758	1,920	3,267	4,552
Other (deductions)	(2,424)	(2,340)	(5,110)	(4,629)
Net other income and deductions	24,101	7,709	(6,429)	25,723
Interest Charges	19,178	18,526	36,807	36,886
Earnings (Loss) before Income Taxes	54,507	(126,794)	39,952	(102,848)
Income Taxes (Benefits)	4,895	(43,481)	2,536	(41,508)
Net Earnings (Loss)	49,612	(83,313)	37,416	(61,340)
(Earnings) Attributable to Valencia Non-controlling Interest	(3,940)	(3,499)	(7,669)	(6,328)
Preferred Stock Dividend Requirements of Subsidiary	(132)	(132)	(264)	(264)
Net Earnings (Loss) Attributable to PNMR	45,672	(86,812)	29,747	(67,668)
Net Earnings (Loss) Available for PNM Common Stock	45,540	(86,944)	29,483	(67,932)
PNM | Cost of energy
Operating Expenses:
Energy costs	67,884	58,866	142,408	158,204
PNM | Energy production costs
Operating Expenses:
Energy costs	33,345	42,905	66,963	77,977
Texas-New Mexico Power Company
Electric Operating Revenues:
Contracts with customers	94,924	86,856	182,148	166,612
Alternative revenue programs	1,937	5,153	202	5,724
Other electric operating revenue	0	0	0	0
Total electric operating revenues	96,861	92,009	182,350	172,336
Operating Expenses:
Administrative and general	10,757	9,097	21,530	20,655
Depreciation and amortization	22,368	20,502	44,204	40,716
Transmission and distribution costs	6,759	7,357	13,130	13,401
Taxes other than income taxes	7,823	7,559	15,801	15,197
Total operating expenses	73,686	69,431	144,830	137,173
Operating income (loss)	23,175	22,578	37,520	35,163
Other Income and Deductions:
Other income	2,029	1,191	2,699	1,940
Other (deductions)	(66)	(460)	(175)	(623)
Net other income and deductions	1,963	731	2,524	1,317
Interest Charges	7,361	6,560	14,533	15,361
Earnings (Loss) before Income Taxes	17,777	16,749	25,511	21,119
Income Taxes (Benefits)	1,603	1,482	2,245	1,754
Net Earnings (Loss) Attributable to PNMR	16,174	15,267	23,266	19,365
Texas-New Mexico Power Company | Cost of energy
Operating Expenses:
Energy costs	$ 25,979	$ 24,916	$ 50,165	$ 47,204