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Revenue (Revenues Outside the Scope of Topic 606) (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] |  |  |  |
Leases | $ 14 | $ 12 | $ 29 | $ 26
Operating segments | Electric |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Alternative Revenue Program | 0 | 0 | 1 | 0
Other revenues | 5 | 5 | 10 | 9
Operating segments | Gas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Alternative Revenue Program | 0 | 2 | 0 | 8
Other revenues | 4 | 4 | 7 | 6
Operating segments | DTE Vantage |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Leases | 14 | 12 | 29 | 26
Operating segments | Energy Trading |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Derivatives | $ 966 | $ 586 | $ 2,465 | $ 1,245

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