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Related Party Transactions (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
NMRD |  |  |
Related Party Transaction [Line Items] |  |  |
Ownership percentage | 50.00% |  |
Services billings: | PNMR to PNM |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | $ 115,415 | $ 107,747 | $ 100,872
Services billings: | PNMR to TNMP |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 42,293 | 41,798 | 39,053
Services billings: | PNM to TNMP |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 411 | 404 | 383
Services billings: | TNMP to PNMR |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 141 | 141 | 141
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 | 308 | 221 | 260
Renewable energy purchases: | PNM from NMRD |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 11,795 | 11,879 | 9,638
Interconnection and facility study billings: | PNMR to PNM |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 0 | 0 | 0
Interconnection and facility study billings: | PNM to NMRD |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 0 | 225 | 350
Interconnection and facility study billings: | PNM to PNMR |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 0 | 0 | 0
Interconnection and facility study billings: | NMRD to PNM |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 0 | 1,276 | 0
Interest billings: | PNMR to PNM |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 13 | 31 | 6
Interest billings: | PNMR to TNMP |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 166 | 0 | 2
Interest billings: | PNM to PNMR |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 249 | 144 | 255
Income tax sharing payments: | PNMR to PNM |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | 0 | 19,492 | 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 | 8,341 | 12,842 | 15,820
Income tax sharing payments: | PNM to PNMR |  |  |
Related Party Transaction [Line Items] |  |  |
Amount of related party transaction | $ 11,602 | $ 0 | $ 0

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- Details
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