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Revenue (Disaggregation of Revenue By Segment) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | $ 2,684 | $ 4,924 | $ 6,463 | $ 9,501
Electric |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 1,329 | 1,570 | 2,708 | 3,060
Electric | Residential |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 658 | 691 | 1,312 | 1,391
Electric | Commercial |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 524 | 487 | 1,019 | 964
Electric | Industrial |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 186 | 170 | 355 | 331
Electric | Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | (39) | 222 | 22 | 374
Electric | Other | DTE Sustainable Generation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 3 | 4 | 7 | 8
Gas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 311 | 362 | 1,018 | 1,128
Gas | Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 25 | 60 | 14 | 103
Gas | Gas sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 216 | 231 | 817 | 827
Gas | End User Transportation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 54 | 55 | 140 | 153
Gas | Intermediate Transportation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 16 | 16 | 47 | 45
DTE Vantage |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 189 | 220 | 373 | 399
Energy Trading |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | $ 904 | $ 2,832 | $ 2,472 | $ 5,035

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