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Related Party Transactions (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Related Party Transaction [Line Items] |  |  |
Dividends declared | $ 800,000,000 | $ 710,000,000 | $ 752,000,000
Dividends paid | 752,000,000 | 685,000,000 | 791,000,000
DTE Electric |  |  |
Related Party Transaction [Line Items] |  |  |
Dividends declared | 1,002,000,000 | 763,000,000 | 588,000,000
Dividends paid | 1,002,000,000 | 763,000,000 | 588,000,000
DTE Electric | DTE Energy |  |  |
Related Party Transaction [Line Items] |  |  |
Dividends declared | 1,002,000,000 | 763,000,000 | 588,000,000
Dividends paid | 1,002,000,000 | 763,000,000 | 588,000,000
Capital contribution from DTE Energy | $ 759,000,000 | $ 600,000,000 | 555,000,000
DTE Electric | Affiliates |  |  |
Related Party Transaction [Line Items] |  |  |
Weighted average interest rate | 5.60% | 4.40% |
DTE Electric | DTE Energy Foundation |  |  |
Related Party Transaction [Line Items] |  |  |
Charitable contributions to foundation | $ 0 | $ 0 | 2,000,000
DTE Electric | Energy sales |  |  |
Related Party Transaction [Line Items] |  |  |
Revenues and Other Income/ Costs | 11,000,000 | 8,000,000 | 9,000,000
DTE Electric | Other services and interest |  |  |
Related Party Transaction [Line Items] |  |  |
Revenues and Other Income/ Costs | 3,000,000 | 0 | 2,000,000
DTE Electric | Shared capital assets |  |  |
Related Party Transaction [Line Items] |  |  |
Revenues and Other Income/ Costs | 58,000,000 | 57,000,000 | 49,000,000
DTE Electric | Fuel and purchased power |  |  |
Related Party Transaction [Line Items] |  |  |
Revenues and Other Income/ Costs | 50,000,000 | 58,000,000 | 13,000,000
DTE Electric | Other services and interest |  |  |
Related Party Transaction [Line Items] |  |  |
Revenues and Other Income/ Costs | 2,000,000 | 1,000,000 | 0
DTE Electric | Corporate expenses |  |  |
Related Party Transaction [Line Items] |  |  |
Revenues and Other Income/ Costs | $ 299,000,000 | $ 379,000,000 | $ 391,000,000

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