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Regulatory Matters (Integrated Resource Plan) (Details) - USD ($) $ in Millions |  | 1 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jul. 26, 2023 | Nov. 30, 2022 | Dec. 31, 2023 | Sep. 30, 2023 | Dec. 31, 2022
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Reclassification to long-term regulatory assets |  |  | $ 6,209 |  | $ 3,886
Reclassification from property, plant, and equipment |  |  | (28,169) |  | (28,767)
DTE Electric |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Reclassification to long-term regulatory assets |  |  | 5,596 |  | 3,219
Reclassification from property, plant, and equipment |  |  | $ (21,366) |  | $ (22,496)
Integrated Resource Plan | MPSC | DTE Electric |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Period over which to meet the needs of customers |  | 20 years |  |  |
Authorized securitization of plant costs | $ 1,050 |  |  |  |
Committed total donations | 38 |  |  |  |
Integrated Resource Plan | MPSC | DTE Electric | Organizations providing energy support to low-income customers |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Committed annual donations | 2 |  |  |  |
Integrated Resource Plan | MPSC | DTE Electric | Organizations providing customers with bill assistance |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Committed total donations | 30 |  |  |  |
Integrated Resource Plan | MPSC | DTE Electric | Organizations providing customers with bill assistance | Minimum |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Committed annual donations | 1 |  |  |  |
Integrated Resource Plan | MPSC | DTE Electric | Belle River coal handling assets |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Authorized securitization of plant costs | 200 |  |  |  |
Integrated Resource Plan | MPSC | DTE Electric | Monroe assets |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Authorized securitization of plant costs | 845 |  |  |  |
Integrated Resource Plan | MPSC | DTE Electric | Monroe assets | Recoverable undepreciated costs on retiring plants |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Requested regulatory asset | $ 1,600 |  |  |  |
Requested return on equity, percent | 9.00% |  |  |  |
Amortization period for regulatory asset | 15 years |  |  |  |
Integrated Resource Plan | MPSC | DTE Electric | Adjustment |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Reclassification to long-term regulatory assets |  |  |  | $ 2,700 |
Reclassification from property, plant, and equipment |  |  |  | $ 2,700 |

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