Related Party Transactions (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Related Party Transaction [Line Items]
Dividends declared	$ 859	$ 800	$ 710
Dividends paid	810	752	685
DTE Electric
Related Party Transaction [Line Items]
Dividends declared	776	1,002	763
Dividends paid	776	1,002	763
DTE Electric \| DTE Energy
Related Party Transaction [Line Items]
Dividends declared	776	1,002	763
Dividends paid	776	1,002	763
Capital contribution from DTE Energy	$ 634	$ 759	600
DTE Electric \| Affiliates
Related Party Transaction [Line Items]
Weighted average interest rate	4.70%	5.60%
DTE Electric \| Energy sales
Related Party Transaction [Line Items]
Revenues and Other Income/ Costs	$ 11	$ 11	8
DTE Electric \| Other services and interest
Related Party Transaction [Line Items]
Revenues and Other Income/ Costs	0	3	0
DTE Electric \| Shared capital assets
Related Party Transaction [Line Items]
Revenues and Other Income/ Costs	58	58	57
DTE Electric \| Fuel and purchased power
Related Party Transaction [Line Items]
Revenues and Other Income/ Costs	65	50	58
DTE Electric \| Other services and interest
Related Party Transaction [Line Items]
Revenues and Other Income/ Costs	4	2	1
DTE Electric \| Corporate expenses
Related Party Transaction [Line Items]
Revenues and Other Income/ Costs	$ 342	$ 299	$ 379

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- Definition

Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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Amount of transactions with related party during the financial reporting period.

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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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