XML 107 R91.htm IDEA: XBRL DOCUMENT
v3.23.2

Lease Commitments - Narrative (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jan. 31, 2023 USD ($) | Apr. 30, 2022 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2022 USD ($) | Dec. 31, 2022 USD ($) | Apr. 02, 2021 lease | Jan. 15, 2016 lease | Jan. 15, 2015 lease
Operating Leased Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Proceeds from sale of productive assets |  |  |  |  | $ 28,372 | $ 0 |  |  |  |
Reduction to inventories |  |  |  |  | 14,283 | 10,353 |  |  |  |
Operating lease, payments to lessor upon occurrence of certain events |  |  | $ 13,800 |  | 13,800 |  |  |  |  |
Unamortized cost, right-of-way lease payments |  |  | 57,500 |  | 57,500 |  | $ 54,600 |  |  |
Operating lease, right-of-use asset, amortization expense |  |  | 900 | $ 900 | 1,800 | 2,000 |  |  |  |
Lessee, operating lease, unguaranteed residual value |  |  | 25,100 |  | 25,100 |  |  |  |  |
Lease to be executed, fixed consideration |  |  | $ 1,300,000 |  | $ 1,300,000 |  |  |  |  |
Lease to be executed, term of contract |  |  | 20 years |  | 20 years |  |  |  |  |
Materials, Supplies, and Fuel Stock |  |  |  |  |  |  |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Reduction to inventories |  |  |  |  | $ (5,300) |  |  |  |  |
PNM |  |  |  |  |  |  |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Number of leases under which lease term was extended | lease |  |  |  |  |  |  |  | 5 |  |
Proceeds from sale of productive assets |  |  |  |  | 28,372 | 0 |  |  |  |
Reduction to inventories |  |  |  |  | 11,334 | 9,076 |  |  |  |
Lessee, operating lease, unguaranteed residual value |  |  | $ 13,100 |  | 13,100 |  |  |  |  |
PNM | Palo Verde Nuclear Generating Station, Unit 1 and 4 Leases |  |  |  |  |  |  |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Number of leases, expiring | lease |  |  |  |  |  |  |  |  |  | 4
Number of leases under which lease term was extended | lease |  |  |  |  |  |  |  |  |  | 4
PNM | Palo Verde Nuclear Generating Station, Unit 2 Leases |  |  |  |  |  |  |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Number of leases, expiring | lease |  |  |  |  |  |  |  |  | 4 |
Number of leases under which lease term was extended | lease |  |  |  |  |  |  |  |  | 1 |
Annual lease payments during renewal period |  |  |  |  | 1,600 |  |  |  |  |
PNM | Navajo Nation |  |  |  |  |  |  |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Annual lease payments |  |  |  |  | 6,000 |  |  |  |  |
Right-of-way lease payments |  | $ 8,300 |  |  |  |  |  |  |  |
TNMP |  |  |  |  |  |  |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Reduction to inventories |  |  |  |  | 2,949 | $ 1,277 |  |  |  |
Lessee, operating lease, unguaranteed residual value |  |  | 12,000 |  | 12,000 |  |  |  |  |
Equipment |  |  |  |  |  |  |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Operating lease, residual value of leased asset |  |  | 2,000 |  | 2,000 |  |  |  |  |
Equipment | PNM |  |  |  |  |  |  |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Operating lease, residual value of leased asset |  |  | 900 |  | 900 |  |  |  |  |
Equipment | TNMP |  |  |  |  |  |  |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Operating lease, residual value of leased asset |  |  | $ 1,100 |  | $ 1,100 |  |  |  |  |
PNM Owned Assets |  |  |  |  |  |  |  |  |  |
Operating Leased Assets [Line Items] |  |  |  |  |  |  |  |  |  |
Proceeds from sale of productive assets | $ 33,700 |  |  |  |  |  |  |  |  |

X
- Definition Annual Lease Payments During Renewal Period + References No definition available. + Details
Name: | pnm_AnnualLeasePaymentsDuringRenewalPeriod
Namespace Prefix: | pnm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Lessee, Operating Lease, Lease Not Yet Commenced, Fixed Consideration + References No definition available. + Details
Name: | pnm_LesseeOperatingLeaseLeaseNotYetCommencedFixedConsideration
Namespace Prefix: | pnm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Lessee, Operating Lease, Payments To Lessor Upon Occurrence Of Certain Events + References No definition available. + Details
Name: | pnm_LesseeOperatingLeasePaymentsToLessorUponOccurrenceOfCertainEvents
Namespace Prefix: | pnm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Lessee, Operating Lease, Unguaranteed Residual Value + References No definition available. + Details
Name: | pnm_LesseeOperatingLeaseUnguaranteedResidualValue
Namespace Prefix: | pnm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Annual lease payments + References No definition available. + Details
Name: | pnm_LesseeRightOfWayLeaseAnnualPayments
Namespace Prefix: | pnm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Right-Of-Way Lease Payments + References No definition available. + Details
Name: | pnm_LesseeRightOfWayLeasePayments
Namespace Prefix: | pnm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number Of Leases, Expiring + References No definition available. + Details
Name: | pnm_NumberOfLeasesExpiring
Namespace Prefix: | pnm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Public Utilities, Number Of Leases Under Which Lease Term Was Extended + References No definition available. + Details
Name: | pnm_PublicUtilitiesNumberOfLeasesUnderWhichLeaseTermWasExtended
Namespace Prefix: | pnm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Unamortized Cost Of Prepaid Right-Of-Way Agreements + References No definition available. + Details
Name: | pnm_UnamortizedCostOfPrepaidRightOfWayAgreements
Namespace Prefix: | pnm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_IncreaseDecreaseInInventories
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Term of lessee's operating lease not yet commenced, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-3 + Details
Name: | us-gaap_LesseeOperatingLeaseLeaseNotYetCommencedTermOfContract1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of residual asset covered by residual value guarantee under operating lease. Excludes guarantee considered to be lease payments for lessor. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479773/842-30-50-3 + Details
Name: | us-gaap_OperatingLeaseResidualValueOfLeasedAsset
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of periodic reduction over lease term of carrying amount of right-of-use asset from operating lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_OperatingLeasedAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 12 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-12 + Details
Name: | us-gaap_ProceedsFromSaleOfProductiveAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_PublicUtilitiesInventoryAxis=pnm_MaterialsSuppliesAndFuelStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=pnm_PublicServiceCompanyOfNewMexicoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilityAxis=pnm_PaloVerdeNuclearGeneratingStationUnits1And4Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilityAxis=pnm_PaloVerdeNuclearGeneratingStationUnit2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilityAxis=pnm_NavajoNationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=pnm_TexasNewMexicoPowerCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_EquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=pnm_PNMOwnedAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |