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Revenue (Disaggregation of Revenue by Segment) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disaggregation of Revenue [Line Items] |  |  |
Revenues | $ 12,745 | $ 19,228 | $ 14,964
Operating Segments | Electric |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 5,818 | 6,412 | 5,821
Operating Segments | Electric | Residential |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 2,847 | 2,911 | 2,926
Operating Segments | Electric | Commercial |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 2,114 | 1,958 | 1,908
Operating Segments | Electric | Industrial |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 732 | 659 | 628
Operating Segments | Electric | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 125 | 884 | 359
Operating Segments | Electric | Other | DTE Sustainable Generation |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 14 | 15 | 12
Operating Segments | Gas |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 1,748 | 1,924 | 1,553
Operating Segments | Gas | Gas sales |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 1,324 | 1,442 | 1,058
Operating Segments | Gas | End User Transportation |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 250 | 264 | 233
Operating Segments | Gas | Intermediate Transportation |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 85 | 81 | 82
Operating Segments | Gas | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 89 | 137 | 180
Operating Segments | DTE Vantage |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 809 | 848 | 1,482
Operating Segments | Energy Trading |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | $ 4,612 | $ 10,308 | $ 6,831

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