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Regulatory Matters (2024 Electric Rate Case Filing) (Details) - MPSC - DTE Electric - USD ($) $ in Millions |  |  | 12 Months Ended
--- | --- | --- | ---
Jan. 23, 2025 | Mar. 28, 2024 | Dec. 31, 2024
Public Utilities, General Disclosures [Line Items] |  |  |
Approved return on equity, percent |  |  | 9.90%
2024 DTE Electric Rate Case Filing |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Requested rate increase |  | $ 456 |
Approved return on equity, percent |  | 9.90% |
Requested return on equity, percent |  | 10.50% |
2024 DTE Electric Rate Case Filing | Subsequent Event |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Approved return on equity, percent | 9.90% |  |
Approved revenue increase | $ 217 |  |
Disallowed capital expenditures | $ 12 |  |

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