Regulatory and Rate Matters - Schedule of PNM’s Revenues Recorded for the Renewable Energy Rider (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
May 28, 2026 |
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Public Utilities, General Disclosures [Line Items] | |||||
| Annual Revenue Collection | $ 53.0 | ||||
| Public Service Company of New Mexico | Renewable Energy Rider | NMPRC | |||||
| Public Utilities, General Disclosures [Line Items] | |||||
| Annual Revenue Collection | $ 54.3 | $ 58.7 | |||
| Revenues Recorded | $ 11.8 | $ 10.9 | $ 44.0 | $ 42.5 | |