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Revenue (Disaggregation of Revenue by Segment) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disaggregation of Revenue [Line Items] |  |  |
Revenues | $ 12,457 | $ 12,745 | $ 19,228
Operating Segments | Electric |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 6,293 | 5,818 | 6,412
Operating Segments | Electric | Residential |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 3,045 | 2,847 | 2,911
Operating Segments | Electric | Commercial |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 2,263 | 2,114 | 1,958
Operating Segments | Electric | Industrial |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 715 | 732 | 659
Operating Segments | Electric | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 270 | 125 | 884
Operating Segments | Electric | Other | DTE Sustainable Generation |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 16 | 14 | 15
Operating Segments | Gas |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 1,798 | 1,748 | 1,924
Operating Segments | Gas | Gas sales |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 1,307 | 1,324 | 1,442
Operating Segments | Gas | End User Transportation |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 246 | 250 | 264
Operating Segments | Gas | Intermediate Transportation |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 83 | 85 | 81
Operating Segments | Gas | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 162 | 89 | 137
Operating Segments | DTE Vantage |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | 753 | 809 | 848
Operating Segments | Energy Trading segment |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues | $ 3,843 | $ 4,612 | $ 10,308

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