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v3.25.1

Retirement Benefits and Trusteed Assets (Details Textuals) - Pension plans - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2025
Defined Benefit Plan Disclosure [Line Items] |  |  |
Pension credit | $ (15) | $ 5 |
DTE Electric |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Pension credit | $ 14 | $ 1 |
DTE Electric | Forecast |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Pension funds transferred to (from) plan (up to) |  |  | $ 25
DTE Gas | Forecast |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Pension funds transferred to (from) plan (up to) |  |  | $ (25)

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