XML 146 R124.htm IDEA: XBRL DOCUMENT v3.22.4

Regulatory and Rate Matters - Schedule of Change in Balance Sheet Related to Discontinued Services (Details) - USD ($) $ in Thousands		12 Months Ended
	Sep. 29, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Current Assets:
Inventory	$ (6,430)	$ 8,528	$ (1,356)	$ (11,512)
Utility Plant:
Net utility plant	(382,798)
Deferred Charges and Other Assets:
Regulatory assets - ETA	289,381
Regulatory assets - Non-ETA	22,593
Deferred Credits and Other Liabilities:
Regulatory liabilities	(77,254)
Net increase (decrease)	$ 0
Undepreciated investments		274,900
Investments, plant decommissioning		14,500
Obsolete inventory		6,400
Inventory, plant decommissioning		$ 16,200

X

- Definition

Increase (Decrease) In Assets And Liabilities, Net

+ References

No definition available.

+ Details

Name:	pnm_IncreaseDecreaseInAssetsAndLiabilitiesNet
Namespace Prefix:	pnm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Increase (Decrease) In Regulatory Assets, ETA

+ References

No definition available.

+ Details

Name:	pnm_IncreaseDecreaseInRegulatoryAssetsETA
Namespace Prefix:	pnm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Increase (Decrease) In Regulatory Assets, Non-ETA

+ References

No definition available.

+ Details

Name:	pnm_IncreaseDecreaseInRegulatoryAssetsNonETA
Namespace Prefix:	pnm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Public Utilities, Increase (Decrease) Property Plant And Equipment In Service, Net

+ References

No definition available.

+ Details

Name:	pnm_PublicUtilitiesIncreaseDecreasePropertyPlantAndEquipmentInServiceNet
Namespace Prefix:	pnm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Public Utilities, Inventory, Plant Decommissioning

+ References

No definition available.

+ Details

Name:	pnm_PublicUtilitiesInventoryPlantDecommissioning
Namespace Prefix:	pnm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Public Utilities, Investments, Plant Decommissioning

+ References

No definition available.

+ Details

Name:	pnm_PublicUtilitiesInvestmentsPlantDecommissioning
Namespace Prefix:	pnm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Public Utilities, Investments, Undepreciated

+ References

No definition available.

+ Details

Name:	pnm_PublicUtilitiesInvestmentsUndepreciated
Namespace Prefix:	pnm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Public Utilities, Obsolete Inventory

+ References

No definition available.

+ Details

Name:	pnm_PublicUtilitiesObsoleteInventory
Namespace Prefix:	pnm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Utility Plant

+ References

No definition available.

+ Details

Name:	pnm_UtilityPlantAbstract
Namespace Prefix:	pnm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_AssetsCurrentAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

+ Details

Name:	us-gaap_IncreaseDecreaseInInventories
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The increase (decrease) during the reporting period in regulated liabilities. Regulated liabilities are created when regulatory agency permits an entity to defer revenues to the balance sheet.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

+ Details

Name:	us-gaap_IncreaseDecreaseInRegulatoryLiabilities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_RegulatoryAssetAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_RegulatoryLiabilityAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration