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Short-Term Credit Arrangements and Borrowings (Details Textuals) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
--- | --- | ---
Short-term Debt [Line Items] |  |
Maximum borrowing capacity | $ 3,200,000,000 |
Weighted average interest rate | 4.70% | 5.60%
Dividend restriction | $ 2,500,000,000 |
Retained earnings | 4,946,000,000 | $ 4,404,000,000
Effective limitations | 0 |
DTE Electric |  |
Short-term Debt [Line Items] |  |
Maximum borrowing capacity | $ 925,000,000 |
Total funded debt to capitalization ratio | 0.52 |
Weighted average interest rate | 4.70% | 5.60%
Retained earnings | $ 3,159,000,000 | $ 2,863,000,000
DTE Electric | Maximum |  |
Short-term Debt [Line Items] |  |
Total funded debt to capitalization ratio | 0.65 |
DTE Gas |  |
Short-term Debt [Line Items] |  |
Maximum borrowing capacity | $ 300,000,000 |
Total funded debt to capitalization ratio | 0.49 |
DTE Gas | Maximum |  |
Short-term Debt [Line Items] |  |
Total funded debt to capitalization ratio | 0.65 |
DTE Energy |  |
Short-term Debt [Line Items] |  |
Maximum borrowing capacity | $ 1,975,000,000 |
Total funded debt to capitalization ratio | 0.65 |
DTE Energy | Maximum |  |
Short-term Debt [Line Items] |  |
Total funded debt to capitalization ratio | 0.70 |
DTE Energy | Demand financing agreement |  |
Short-term Debt [Line Items] |  |
Maximum borrowing capacity | $ 200,000,000 |
Amount outstanding | 49,000,000 | $ 152,000,000
DTE Energy | DTE Energy Revolver | Letters of credit |  |
Short-term Debt [Line Items] |  |
Maximum borrowing capacity | $ 500,000,000 |

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