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Regulatory Matters (Regulation and Assets and Liabilities) (Details) | Dec. 31, 2023 | Dec. 01, 2023
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Other postretirement costs | DTE Electric |  |
Public Utilities, General Disclosures [Line Items] |  |
Amortization period for regulatory liability |  | 7 years
Customer360 deferred costs |  |
Public Utilities, General Disclosures [Line Items] |  |
Amortization period for regulatory asset | 15 years |
Advanced distribution management system costs |  |
Public Utilities, General Disclosures [Line Items] |  |
Amortization period for regulatory asset | 15 years |
Nuclear performance evaluation and review committee tracker |  |
Public Utilities, General Disclosures [Line Items] |  |
Amortization period for regulatory asset | 5 years |
Securitized regulatory asset, tree trim surge costs | Maximum |  |
Public Utilities, General Disclosures [Line Items] |  |
Amortization period for regulatory asset | 5 years |
Securitized regulatory asset, River Rouge costs | Maximum |  |
Public Utilities, General Disclosures [Line Items] |  |
Amortization period for regulatory asset | 14 years |
Securitized regulatory asset, St Clair and Trenton Channel costs | Maximum |  |
Public Utilities, General Disclosures [Line Items] |  |
Amortization period for regulatory asset | 15 years |
Deferred environmental costs |  |
Public Utilities, General Disclosures [Line Items] |  |
Amortization period for regulatory asset | 10 years |

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