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Related Party Transactions (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021
Related Party Transaction [Line Items] |  |
Ownership | 50.00% |
Services billings: | PNMR to PNM |  |
Related Party Transaction [Line Items] |  |
Amount of related party transaction | $ 27,693 | $ 26,225
Services billings: | PNMR to TNMP |  |
Related Party Transaction [Line Items] |  |
Amount of related party transaction | 10,304 | 10,365
Services billings: | PNM to TNMP |  |
Related Party Transaction [Line Items] |  |
Amount of related party transaction | 93 | 118
Services billings: | TNMP to PNMR |  |
Related Party Transaction [Line Items] |  |
Amount of related party transaction | 35 | 12
Services billings: | PNMR to NMRD |  |
Related Party Transaction [Line Items] |  |
Amount of related party transaction | 64 | 55
Renewable energy purchases: | PNM from NMRD |  |
Related Party Transaction [Line Items] |  |
Amount of related party transaction | 2,621 | 2,585
Interconnection and facility study billings: | PNM from NMRD |  |
Related Party Transaction [Line Items] |  |
Amount of related party transaction | 0 | 0
Interconnection and facility study billings: | PNM to PNMR |  |
Related Party Transaction [Line Items] |  |
Amount of related party transaction | 0 | 0
Interconnection and facility study billings: | NMRD to PNM |  |
Related Party Transaction [Line Items] |  |
Amount of related party transaction | 0 | 1,276
Interest billings: | PNMR to PNM |  |
Related Party Transaction [Line Items] |  |
Amount of related party transaction | 7 | 0
Interest billings: | PNMR to TNMP |  |
Related Party Transaction [Line Items] |  |
Amount of related party transaction | 45 | 0
Interest billings: | PNM to PNMR |  |
Related Party Transaction [Line Items] |  |
Amount of related party transaction | 23 | 36
Income tax sharing payments: | PNMR to PNM |  |
Related Party Transaction [Line Items] |  |
Amount of related party transaction | 0 | 0
Income tax sharing payments: | TNMP to PNMR |  |
Related Party Transaction [Line Items] |  |
Amount of related party transaction | $ 0 | $ 0

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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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- Definition Amount of transactions with related party during the financial reporting period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864 + Details
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- 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
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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