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Retirement Benefits and Trusteed Assets (Details Textuals) - USD ($) | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Annual contributions per employee, percentage |  | 4.00% |  |
Defined contribution plan cost |  | $ 73,000,000 | $ 70,000,000 | $ 73,000,000
DTE Electric |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Defined contribution plan cost |  | $ 35,000,000 | 34,000,000 | 34,000,000
DTE Gas |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Annual contributions per employee, percentage |  | 8.00% |  |
Pension plan |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Company contributions |  | $ 9,000,000 | 12,000,000 |
Expected return on plan assets for next fiscal year |  | 7.60% |  |
Pension plan | Qualified Plan |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Company contributions |  |  |  | 92,000,000
Estimated future employer contributions in next fiscal year |  | $ 0 |  |
Pension plan | DTE Electric |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Allocated pension benefit costs |  | 101,000,000 | $ 107,000,000 | 106,000,000
Pension plan | DTE Electric | Qualified Plan |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Pension funds transferred to (from) plan |  | 50,000,000 |  |
Company contributions |  |  |  | $ 60,000,000
Pension plan | DTE Gas | Qualified Plan |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Pension funds transferred to (from) plan |  | $ (50,000,000) |  |
Pension plan | Maximum | DTE Electric | Qualified Plan | Forecast |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Pension funds transferred to (from) plan | $ 50,000,000 |  |  |
Pension plan | Maximum | DTE Gas | Qualified Plan | Forecast |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Pension funds transferred to (from) plan | $ (50,000,000) |  |  |
Other postretirement benefit plan |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Expected return on plan assets for next fiscal year |  | 7.20% |  |
Retiree health care allowance will increase at lower of the rate of medical inflation or a set percentage |  | 2.00% |  |

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