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Revenue (Disaggregation of Revenue By Segment) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | $ 3,419 | $ 2,875 | $ 7,859 | $ 6,115
Operating segments | Electric |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 1,686 | 1,616 | 3,145 | 3,086
Operating segments | Electric | Residential |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 733 | 744 | 1,453 | 1,444
Operating segments | Electric | Commercial |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 536 | 571 | 1,065 | 1,127
Operating segments | Electric | Industrial |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 164 | 187 | 324 | 370
Operating segments | Electric | Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 253 | 114 | 303 | 145
Operating segments | Electric | Other | DTE Sustainable Generation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 4 | 5 | 9 | 9
Operating segments | Gas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 316 | 289 | 1,192 | 1,000
Operating segments | Gas | Gas sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 229 | 201 | 921 | 766
Operating segments | Gas | End User Transportation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 51 | 53 | 142 | 135
Operating segments | Gas | Intermediate Transportation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 16 | 16 | 47 | 45
Operating segments | Gas | Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 20 | 19 | 82 | 54
Operating segments | DTE Vantage |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 169 | 181 | 357 | 365
Operating segments | Energy Trading |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | $ 1,324 | $ 837 | $ 3,350 | $ 1,770

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