Accumulated Other Comprehensive Income (Loss) (Tables)

6 Months Ended

Jun. 30, 2022

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss)

Information regarding accumulated other comprehensive income (loss) for the six months ended June 30, 2022 and 2021 is as follows:

	Accumulated Other Comprehensive Income (Loss)
	PNM						Corporate and Other		PNMR Consolidated
	Unrealized Gains on Available-for-Sale Debt Securities		Pension Liability Adjustment				Fair Value Adjustment for Cash Flow Hedges
					Total				Total
	(In thousands)
Balance at December 31, 2021	$	11,715	$	(83,651)	$	(71,936)	$	—	$	(71,936)
Amounts reclassified from AOCI (pre-tax)	(2,917)		3,552		635		(1,185)		(550)
Income tax impact of amounts reclassified	741		(902)		(161)		301		140
Other OCI changes (pre-tax)	(9,452)		—		(9,452)		3,448		(6,004)
Income tax impact of other OCI changes	2,401		—		2,401		(876)		1,525
Net after-tax change	(9,227)		2,650		(6,577)		1,688		(4,889)
Balance at June 30, 2022	$	2,488	$	(81,001)	$	(78,513)	$	1,688	$	(76,825)

Balance at December 31, 2020	$	20,403	$	(98,914)	$	(78,511)	$	(672)	$	(79,183)
Amounts reclassified from AOCI (pre-tax)	(5,632)		4,174		(1,458)		(903)		(2,361)
Income tax impact of amounts reclassified	1,430		(1,060)		370		229		599
Other OCI changes (pre-tax)	329		—		329		1,804		2,133
Income tax impact of other OCI changes	(83)		—		(83)		(458)		(541)
Net after-tax change	(3,956)		3,114		(842)		672		(170)
Balance at June 30, 2021	$	16,447	$	(95,800)	$	(79,353)	$	—	$	(79,353)