A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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- Definition

Amount before tax and reclassification adjustments of other comprehensive income (loss).

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- Definition

Amount of tax expense (benefit) allocated to other comprehensive income (loss) before reclassification adjustment from accumulated other comprehensive income (loss).

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Amount before tax of reclassification adjustments of other comprehensive income (loss).

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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income (loss).

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- Definition

Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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Amount of stockholders' equity including the portion attributable to noncontrolling interests, after the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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Amount of increase (decrease) in accumulated other comprehensive income (AOCI) for reclassification to retained earnings of tax effect from remeasurement of deferred tax pursuant to Tax Cuts and Jobs Act.

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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2018	Jan. 01, 2017
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	$ 1,752,594	$ 1,761,448	$ 1,744,872
Cumulative effect adjustment				$ 0	$ 10,382
Balance at January 1, 2018, as adjusted				1,761,448	1,755,254
Total Other Comprehensive Income (Loss)	9,307	(1,536)	14,097
Reclassification of stranded income taxes to retained earnings			17,600
Ending Balance	1,741,750	1,752,594	1,761,448
Public Service Company of New Mexico
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	1,461,571	1,488,369	1,466,792
Cumulative effect adjustment				0
Balance at January 1, 2018, as adjusted				1,488,369
Total Other Comprehensive Income (Loss)	11,367	(2,121)	13,129
Ending Balance	1,512,431	1,461,571	1,488,369
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(108,684)	(95,940)	(92,451)
Cumulative effect adjustment				(11,208)
Balance at January 1, 2018, as adjusted				(107,148)	$ (92,451)
Amounts reclassified from AOCI (pre-tax)	(5,926)	3,965	(10,534)
Income tax impact of amounts reclassified	1,506	(1,008)	4,087
Other OCI changes (pre-tax)	18,400	(6,022)	32,778
Income tax impact of other OCI changes	(4,673)	1,529	(12,234)
Total Other Comprehensive Income (Loss)	9,307	(1,536)	14,097
Reclassification of stranded income taxes to retained earnings			(17,586)
Ending Balance	(99,377)	(108,684)	(95,940)
Total \| Public Service Company of New Mexico
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(110,422)	(97,093)	(92,428)
Cumulative effect adjustment				(11,208)
Balance at January 1, 2018, as adjusted				(108,301)
Amounts reclassified from AOCI (pre-tax)	(6,659)	3,749	(11,115)
Income tax impact of amounts reclassified	1,692	(952)	4,312
Other OCI changes (pre-tax)	21,895	(6,592)	31,778
Income tax impact of other OCI changes	(5,561)	1,674	(11,846)
Total Other Comprehensive Income (Loss)	11,367	(2,121)	13,129
Reclassification of stranded income taxes to retained earnings			(17,794)
Ending Balance	(99,055)	(110,422)	(97,093)
Unrealized Gains on Available-for-Sale Securities \| Public Service Company of New Mexico
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	1,939	13,169	4,320
Cumulative effect adjustment				(11,208)
Balance at January 1, 2018, as adjusted				1,961
Amounts reclassified from AOCI (pre-tax)	(14,063)	(3,819)	(17,567)
Income tax impact of amounts reclassified	3,572	970	6,816
Other OCI changes (pre-tax)	25,724	3,790	28,160
Income tax impact of other OCI changes	(6,534)	(963)	(10,927)
Total Other Comprehensive Income (Loss)	8,699	(22)	6,482
Reclassification of stranded income taxes to retained earnings			2,367
Ending Balance	10,638	1,939	13,169
Pension Liability Adjustment \| Public Service Company of New Mexico
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(112,361)	(110,262)	(96,748)
Cumulative effect adjustment				0
Balance at January 1, 2018, as adjusted				(110,262)
Amounts reclassified from AOCI (pre-tax)	7,404	7,568	6,452
Income tax impact of amounts reclassified	(1,880)	(1,922)	(2,504)
Other OCI changes (pre-tax)	(3,829)	(10,382)	3,618
Income tax impact of other OCI changes	973	2,637	(919)
Total Other Comprehensive Income (Loss)	2,668	(2,099)	6,647
Reclassification of stranded income taxes to retained earnings			(20,161)
Ending Balance	(109,693)	(112,361)	(110,262)
Fair Value Adjustment for Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance		1,153	(23)
Cumulative effect adjustment				0
Balance at January 1, 2018, as adjusted				$ 1,153
Amounts reclassified from AOCI (pre-tax)		216	581
Income tax impact of amounts reclassified		(56)	(225)
Other OCI changes (pre-tax)		570	1,000
Income tax impact of other OCI changes		(145)	(388)
Total Other Comprehensive Income (Loss)		585	968
Reclassification of stranded income taxes to retained earnings			208
Ending Balance			$ 1,153
Fair Value Adjustment for Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	1,738
Amounts reclassified from AOCI (pre-tax)	733
Income tax impact of amounts reclassified	(186)
Other OCI changes (pre-tax)	(3,495)
Income tax impact of other OCI changes	888
Total Other Comprehensive Income (Loss)	(2,060)
Ending Balance	$ (322)	$ 1,738