Condensed Consolidated Statements of Earnings - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Electric Operating Revenues:
Contracts with customers	$ 400,023	$ 392,607	$ 1,042,033	$ 1,016,384
Revenues	422,666	419,900	1,092,857	1,112,398
Operating Expenses:
Administrative and general	49,969	44,130	141,607	132,509
Regulatory disallowances and restructuring costs	(1,645)	0	149	0
Depreciation and amortization	61,580	58,821	180,365	172,829
Transmission and distribution costs	19,394	16,801	54,800	50,309
Taxes other than income taxes	20,492	19,808	60,094	57,820
Total operating expenses	294,676	275,278	839,406	822,435
Operating income	127,990	144,622	253,451	289,963
Other Income and Deductions:
Interest income	3,400	3,582	11,862	12,348
Gains on investment securities	2,463	5,406	1,081	17,730
Other income	3,735	6,275	12,000	14,626
Other (deductions)	(2,624)	(6,709)	(9,867)	(17,372)
Net other income and deductions	6,974	8,554	15,076	27,332
Interest Charges	30,492	32,106	96,868	96,137
Earnings before Income Taxes	104,472	121,070	171,659	221,158
Income Taxes	12,899	42,743	18,838	75,154
Net Earnings	91,573	78,327	152,821	146,004
(Earnings) Attributable to Valencia Non-controlling Interest	(3,920)	(4,456)	(11,706)	(11,452)
Preferred Stock Dividend Requirements of Subsidiary	(132)	(132)	(396)	(396)
Net Earnings Available for PNM Common Stock	$ 87,521	$ 73,739	$ 140,719	$ 134,156
Net Earnings Attributable to PNMR per Common Share:
Basic (dollars per share)	$ 1.10	$ 0.92	$ 1.76	$ 1.68
Diluted (dollars per share)	1.09	0.92	1.76	1.67
Dividends Declared per Common Share (dollars per share)	$ 0.2650	$ 0.2425	$ 0.7950	$ 0.7275
Alternative revenue programs
Electric Operating Revenues:
Revenues	$ (8,050)	$ (1,908)	$ (1,466)	$ 11,591
Other electric operating revenue
Electric Operating Revenues:
Revenues	30,693	29,201	52,290	84,423
Electricity
Electric Operating Revenues:
Revenues	422,666	419,900	1,092,857	1,112,398
Operating Expenses:
Cost of energy and energy production costs	113,536	103,748	293,803	310,818
Electricity, Generation
Operating Expenses:
Cost of energy and energy production costs	31,350	31,970	108,588	98,150
Service
Operating Expenses:
Depreciation and amortization	61,580	58,821	180,365	172,829
PNM
Electric Operating Revenues:
Contracts with customers	306,019	300,604	783,310	769,069
Revenues	331,374	327,254	832,116	854,909
Operating Expenses:
Administrative and general	44,923	39,888	129,571	120,598
Regulatory disallowances and restructuring costs	(1,645)	0	149	0
Depreciation and amortization	38,474	36,764	113,314	109,228
Transmission and distribution costs	12,408	10,207	33,228	30,301
Taxes other than income taxes	10,964	10,668	34,033	32,837
Total operating expenses	228,858	211,864	648,430	637,749
Operating income	102,516	115,390	183,686	217,160
Other Income and Deductions:
Interest income	3,472	1,782	9,340	6,457
Gains on investment securities	2,463	5,406	1,081	17,730
Other income	2,137	3,762	6,821	10,270
Other (deductions)	(2,085)	(4,964)	(7,314)	(14,490)
Net other income and deductions	5,987	5,986	9,928	19,967
Interest Charges	18,063	20,451	58,881	62,393
Earnings before Income Taxes	90,440	100,925	134,733	174,734
Income Taxes	9,012	35,642	11,009	58,865
Net Earnings	81,428	65,283	123,724	115,869
(Earnings) Attributable to Valencia Non-controlling Interest	(3,920)	(4,456)	(11,706)	(11,452)
Net Earnings Attributable to PNMR	77,508	60,827	112,018	104,417
Preferred Stock Dividend Requirements of Subsidiary	(132)	(132)	(396)	(396)
Net Earnings Available for PNM Common Stock	77,376	60,695	111,622	104,021
PNM | Alternative revenue programs
Electric Operating Revenues:
Revenues	(5,338)	(2,551)	(3,484)	1,417
PNM | Other electric operating revenue
Electric Operating Revenues:
Revenues	30,693	29,201	52,290	84,423
PNM | Electricity
Operating Expenses:
Cost of energy and energy production costs	92,384	82,367	229,547	246,635
PNM | Electricity, Generation
Operating Expenses:
Cost of energy and energy production costs	31,350	31,970	108,588	98,150
Texas-New Mexico Power Company
Electric Operating Revenues:
Contracts with customers	94,004	92,003	258,723	247,315
Revenues	91,292	92,646	260,741	257,489
Operating Expenses:
Administrative and general	9,781	10,765	29,342	30,402
Depreciation and amortization	17,176	16,424	49,676	47,392
Transmission and distribution costs	6,986	6,594	21,572	20,008
Taxes other than income taxes	8,373	8,008	22,710	21,778
Total operating expenses	63,468	63,172	187,556	183,763
Operating income	27,824	29,474	73,185	73,726
Other Income and Deductions:
Other income	1,300	2,258	4,276	3,621
Other (deductions)	(149)	(1,030)	(1,209)	(1,229)
Net other income and deductions	1,151	1,228	3,067	2,392
Interest Charges	8,241	7,704	23,771	22,619
Earnings before Income Taxes	20,734	22,998	52,481	53,499
Income Taxes	4,634	8,271	11,602	18,964
Net Earnings Attributable to PNMR	$ 16,100	$ 14,727	40,879	34,535
Net Earnings Attributable to PNMR per Common Share:
Dividends Declared per Common Share (dollars per share)	$ 0.2650	$ 0.2425
Texas-New Mexico Power Company | Alternative revenue programs
Electric Operating Revenues:
Revenues	$ (2,712)	$ 643	2,018	10,174
Texas-New Mexico Power Company | Other electric operating revenue
Electric Operating Revenues:
Revenues	0		0
Texas-New Mexico Power Company | Electricity
Operating Expenses:
Cost of energy and energy production costs	$ 21,152	$ 21,381	$ 64,256	$ 64,183