XML 90 R74.htm IDEA: XBRL DOCUMENT
v3.23.2

Financing - Schedule of Hedging Arrangements (Details) - Designated as Hedging Instrument - Interest rate contract $ in Thousands | Jun. 30, 2023 USD ($)
--- | ---
Variable Rate Debt, 4.57%, Due September 2023 |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |
Derivative asset, notional amount | $ 150,000
Fixed interest rate | 4.57%
Variable Rate Debt, 4.65%, Due December 2023 |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |
Derivative asset, notional amount | $ 100,000
Fixed interest rate | 4.65%
Variable Rate Debt, 4.66%, Due December 2023 |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |
Derivative asset, notional amount | $ 100,000
Fixed interest rate | 4.66%
Variable Rate Debt, 4.17% Due December 2023 |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |
Derivative asset, notional amount | $ 100,000
Fixed interest rate | 4.17%
Variable Rate Debt, 4.18%, Due December 2023 |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |
Derivative asset, notional amount | $ 100,000
Fixed interest rate | 4.18%
Variable Rate Debt, 2.52%, Due December 2023 |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |
Derivative asset, notional amount | $ 100,000
Fixed interest rate | 2.52%
Variable Rate Debt, 2.65% Due December 2023 (1) |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |
Derivative asset, notional amount | $ 150,000
Fixed interest rate | 2.65%
Variable Rate Debt, 2.65%, Due December 2023 (2) |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |
Derivative asset, notional amount | $ 200,000
Fixed interest rate | 2.65%
Variable Rate Debt, 3.32%, Due December 2024 (1) |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |
Derivative asset, notional amount | $ 100,000
Fixed interest rate | 3.32%
Variable Rate Debt, 3.32%, Due December 2024 (2) |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |
Derivative asset, notional amount | $ 100,000
Fixed interest rate | 3.32%
Variable Rate Debt, 3.38%, Due December 2024 |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |
Derivative asset, notional amount | $ 100,000
Fixed interest rate | 3.38%
Variable Rate Debt, 3.62%, Due December 2024 |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |
Derivative asset, notional amount | $ 150,000
Fixed interest rate | 3.62%
Variable Rate Debt, 3.57%, Due December 2024 |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |
Derivative asset, notional amount | $ 150,000
Fixed interest rate | 3.57%

X
- Definition Nominal or face amount used to calculate payments on the derivative asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 5 -Subparagraph (SX 210.12-13(Column A)(Footnote 3)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480032/946-320-S99-5 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 5C -Subparagraph (SX 210.12-13C(Column E)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480032/946-320-S99-5C Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 5A -Subparagraph (SX 210.12-13A(Column D)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480032/946-320-S99-5A Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 5B -Subparagraph (SX 210.12-13B(Column B)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480032/946-320-S99-5B Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-1B Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-1A Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-1A + Details
Name: | us-gaap_DerivativeAssetNotionalAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fixed interest rate related to the interest rate derivative. + References No definition available. + Details
Name: | us-gaap_DerivativeFixedInterestRate
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pnm_VariableRateDebt457DueSeptember2023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pnm_VariableRateDebt465DueDecember2023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pnm_VariableRateDebt466DueDecember2023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pnm_VariableRateDebt417DueDecember2023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pnm_VariableRateDebt418DueDecember2023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pnm_VariableRateDebt252DueDecember2023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pnm_VariableRateDebt265DueDecember20231Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pnm_VariableRateDebt265DueDecember20232Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pnm_VariableRateDebt332DueDecember20241Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pnm_VariableRateDebt332DueDecember20242Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pnm_VariableRateDebt338DueDecember2024Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pnm_VariableRateDebt362DueDecember2024Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pnm_VariableRateDebt357DueDecember2024Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |