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Construction Program and Jointly-Owned Electric Generating Plants - Summary of Budgeted Construction Expenditures (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2020 USD ($)
Summary of Budgeted Construction Expenditures [Line Items] |
2021 | $ 1,016.5
2022 | 765.1
2023 | 761.2
2024 | 713.0
2025 | 705.4
Total | 3,961.2
Public Service Company of New Mexico |
Summary of Budgeted Construction Expenditures [Line Items] |
2021 | 661.9
2022 | 396.6
2023 | 382.0
2024 | 388.5
2025 | 379.9
Total | 2,208.9
Anticipated expansion of transmission system | 277.0
Texas-New Mexico Power Company |
Summary of Budgeted Construction Expenditures [Line Items] |
2021 | 320.1
2022 | 342.0
2023 | 348.0
2024 | 298.0
2025 | 299.0
Total | 1,607.1
Corporate and Other |
Summary of Budgeted Construction Expenditures [Line Items] |
2021 | 34.5
2022 | 26.5
2023 | 31.2
2024 | 26.5
2025 | 26.5
Total | $ 145.2

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