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Related Party Transactions (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Related Party Transaction [Line Items] |  |  |
Ownership percentage | 50.00% |  |
Services billings: | PNMR to PNM |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | $ 100,872 | $ 96,327 | $ 95,637
Services billings: | PNMR to TNMP |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 39,053 | 36,554 | 33,493
Services billings: | PNM to TNMP |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 383 | 375 | 367
Services billings: | TNMP to PNMR |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 141 | 141 | 140
Services billings: | TNMP to PNM |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 0 | 0 | 0
Services billings: | PNMR to NMRD |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 260 | 238 | 183
Renewable energy purchases: | PNM from NMRD |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 9,638 | 3,124 | 2,924
Interconnection and facility study billings: | PNMR to PNM |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 0 | 68,820 | 0
Interconnection and facility study billings: | PNM to NMRD |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 350 | 650 | 2,108
Interconnection and facility study billings: | PNM to PNMR |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 0 | 0 | 68,820
Interest billings: | PNMR to PNM |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 6 | 3,365 | 2,585
Interest billings: | PNMR to TNMP |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 2 | 42 | 136
Interest billings: | PNM to PNMR |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 255 | 299 | 289
Income tax sharing payments: | PNMR to PNM |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 0 | 0 | 0
Income tax sharing payments: | PNMR to TNMP |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 0 | 0 | 0
Income tax sharing payments: | TNMP to PNMR |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 15,820 | 12,996 | 3,424
Income tax sharing payments: | PNM to PNMR |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | $ 0 | $ 0 | $ 134

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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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