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Revenue (Disaggregation of Revenue By Segment) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 3,240 | $ 3,779
Operating segments | Electric |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 1,470 | 1,379
Operating segments | Electric | Residential |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 700 | 654
Operating segments | Electric | Commercial |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 556 | 495
Operating segments | Electric | Industrial |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 183 | 169
Operating segments | Electric | Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 31 | 61
Operating segments | Electric | Other | DTE Sustainable Generation |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 4 | 4
Operating segments | Gas |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 711 | 707
Operating segments | Gas | Gas sales |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 565 | 601
Operating segments | Gas | End User Transportation |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 82 | 86
Operating segments | Gas | Intermediate Transportation |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 29 | 31
Operating segments | Gas | Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 35 | (11)
Operating segments | DTE Vantage |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 184 | 184
Operating segments | Energy Trading |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 933 | $ 1,568

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