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v3.23.3

Long-Term Debt (Schedule of Debt Redeemed) (Details) - USD ($) $ in Millions | 1 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Jun. 30, 2023 | May 31, 2023 | Apr. 30, 2023 | Sep. 30, 2023 | Sep. 30, 2022
Debt Instrument, Redemption [Line Items] |  |  |  |  |  |
Amount |  |  |  |  | $ 1,146 | $ 316
Term Loan Facility | June 2022 Unsecured Term Loan |  |  |  |  |  |
Debt Instrument, Redemption [Line Items] |  |  |  |  |  |
Amount |  | $ 200 | $ 800 |  |  |
DTE Gas | Senior Notes | 2008 Series C 6.44% Senior Notes |  |  |  |  |  |
Debt Instrument, Redemption [Line Items] |  |  |  |  |  |
Interest rate |  |  |  | 6.44% |  |
Amount |  |  |  | $ 25 |  |
DTE Electric |  |  |  |  |  |
Debt Instrument, Redemption [Line Items] |  |  |  |  |  |
Amount |  |  |  |  | $ 121 | $ 316
DTE Electric | Securitization Bonds | 2.64% Securitization Bonds |  |  |  |  |  |
Debt Instrument, Redemption [Line Items] |  |  |  |  |  |
Interest rate |  | 2.64% |  |  |  |
Amount |  | $ 19 |  |  |  |
DTE Electric | Mortgage Bonds | 4.31% Mortgage Bonds |  |  |  |  |  |
Debt Instrument, Redemption [Line Items] |  |  |  |  |  |
Interest rate | 4.31% |  |  |  | 4.31% |
Amount | $ 102 |  |  |  |  |

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