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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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