Condensed Consolidated Statements of Changes in Equity - PNM - USD ($) $ in Thousands	Total	Total PNMR Common Stockholders’ Equity	Common Stock	AOCI	Retained Earnings	Non- controlling Interest in Valencia	PNM	PNM Total PNMR Common Stockholders’ Equity	PNM Common Stock	PNM AOCI	PNM Retained Earnings	PNM Non- controlling Interest in Valencia
Beginning balance at Dec. 31, 2020	$ 2,108,474	$ 2,049,465	$ 1,429,941	$ (79,183)	$ 698,707	$ 59,009	$ 1,863,752	$ 1,804,743	$ 1,494,918	$ (78,511)	$ 388,336	$ 59,009
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Earnings	21,205	17,711			17,711	3,494	22,162	18,668			18,668	3,494
Total other comprehensive income (loss)	(3,159)	(3,159)		(3,159)			(3,623)	(3,623)		(3,623)
Dividends declared on preferred stock							(132)	(132)			(132)
Valencia’s transactions with its owner	(5,243)					(5,243)	(5,243)					(5,243)
Ending balance at Mar. 31, 2021	2,088,226	2,030,966	1,425,133	(82,342)	688,175	57,260	1,876,916	1,819,656	1,494,918	(82,134)	406,872	57,260
Beginning balance at Dec. 31, 2021	2,222,929	2,167,524	1,429,257	(71,936)	810,203	55,405	2,015,264	1,959,859	1,547,918	(71,936)	483,877	55,405
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Earnings	19,218	16,123			16,123	3,095	7,538	4,443			4,443	3,095
Total other comprehensive income (loss)	(4,644)	(4,644)		(4,644)			(4,644)	(4,644)		(4,644)
Dividends declared on preferred stock							(132)	(132)			(132)
Valencia’s transactions with its owner	(4,232)					(4,232)	(4,232)					(4,232)
Ending balance at Mar. 31, 2022	$ 2,169,800	$ 2,115,532	$ 1,425,574	$ (76,580)	$ 766,538	$ 54,268	$ 2,013,794	$ 1,959,526	$ 1,547,918	$ (76,580)	$ 488,188	$ 54,268