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Short-Term Credit Arrangements and Borrowings (Details Textuals) | Oct. 30, 2025 USD ($) | Sep. 30, 2025 USD ($) | Dec. 31, 2024 USD ($)
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Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity |  | $ 3,200,000,000 |
DTE Electric |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity |  | $ 950,000,000 |
Ratio of indebtedness to net capital |  | 0.54 |
DTE Gas |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity |  | $ 300,000,000 |
Ratio of indebtedness to net capital |  | 0.51 |
Maximum | DTE Electric |  |  |
Short-term Debt [Line Items] |  |  |
Ratio of indebtedness to net capital |  | 0.65 |
Maximum | DTE Gas |  |  |
Short-term Debt [Line Items] |  |  |
Ratio of indebtedness to net capital |  | 0.65 |
Unsecured revolving credit facility, expiring October 2029 | Revolving credit facility |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity |  | $ 2,600,000,000 |
Unsecured revolving credit facility, expiring October 2029 | DTE Electric | Revolving credit facility |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity |  | 800,000,000 |
Unsecured revolving credit facility, expiring October 2029 | DTE Gas | Revolving credit facility |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity |  | 300,000,000 |
Unsecured Revolving Credit Facility Expiring In October 2030 | Revolving credit facility | Subsequent Event |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity | $ 2,800,000,000 |  |
Unsecured Revolving Credit Facility Expiring In October 2030 | DTE Electric | Revolving credit facility | Subsequent Event |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity | 1,000,000,000 |  |
$150 Million Unsecured Letter Of Credit Facility | Letters of credit |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity |  | 150,000,000 |
$150 Million Unsecured Letter Of Credit Facility | DTE Electric | Letters of credit |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity |  | 150,000,000 |
$150 Million Unsecured Letter Of Credit Facility | DTE Gas | Letters of credit |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity |  | 0 |
$175 Million Unsecured Letter Of Credit Facility | DTE Electric | Letters of credit | Subsequent Event |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity | $ 175,000,000 |  |
DTE Energy |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity |  | $ 1,950,000,000 |
Ratio of indebtedness to net capital |  | 0.65 |
DTE Energy | Demand financing agreement |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity, financing agreement |  | $ 200,000,000 |
Amount outstanding |  | $ 105,000,000 | $ 49,000,000
DTE Energy | Maximum |  |  |
Short-term Debt [Line Items] |  |  |
Ratio of indebtedness to net capital |  | 0.70 |
DTE Energy | DTE Energy Revolver | Letters of credit |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity |  | $ 500,000,000 |
DTE Energy | Unsecured revolving credit facility, expiring October 2029 | Revolving credit facility |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity |  | 1,500,000,000 |
DTE Energy | $150 Million Unsecured Letter Of Credit Facility | Letters of credit |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity |  | $ 0 |

X
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- Definition Maximum borrowing capacity under the financing agreement without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the agreement. + References No definition available. + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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