Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

Retirement Benefits and Trusteed Assets (Details Textuals) - Pension plans - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2025
Defined Benefit Plan Disclosure [Line Items]
Pension credit	$ (16)	$ 4	$ (31)	$ 9
DTE Electric
Defined Benefit Plan Disclosure [Line Items]
Pension credit	$ 13	$ 2	$ 27	$ 3
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)