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Regulatory Matters (Details) - DTE Electric - USD ($) $ in Millions |  |  |  | 1 Months Ended | 30 Months Ended
--- | --- | --- | --- | --- | ---
Apr. 24, 2025 | Apr. 23, 2025 | Feb. 27, 2025 | Mar. 31, 2023 | Sep. 30, 2025
2022 Electric PSCR Reconciliation | Recovery Mechanism, Power Supply Costs |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Recovery of cost rate |  |  |  | $ 421 | $ 416
2022 Electric PSCR Reconciliation | MPSC |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Cost recovery approved rate |  |  | $ 387 |  |
Amount of disallowed costs |  |  | $ 33 |  |
2025 DTE Electric Rate Case Filing | MPSC |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Requested rate increase | $ 574 |  |  |  |
Return on equity requested percent | 10.75% | 9.90% |  |  |

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