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Significant Accounting Policies (Details Textuals) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Jun. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Significant Accounting Policies [Line Items] |  |  |  |  |  |
Accounts receivable | $ 1,393,000,000 |  |  | $ 1,393,000,000 |  | $ 2,038,000,000
Unrecognized tax benefits decrease as a result of a settlement related to state exposures |  | $ 10,000,000 |  |  |  |
Reduction to income tax expense as a result of an audit settlement related to state exposures |  | 8,000,000 |  |  |  |
Unrecognized tax benefits decrease due to recognition of a federal tax claim | 5,000,000 |  |  |  |  |
Reduction to income tax expense as a result of recognition of a federal tax claim | 5,000,000 |  |  |  |  |
Unrecognized tax benefits | 0 |  |  | 0 |  |
Accrued interest pertaining to income taxes |  |  |  |  |  | 5,000,000
Unrecognized compensation cost | 77,000,000 |  |  | $ 77,000,000 |  |
Recognition period (in years) |  |  |  | 1 year 4 months 24 days |  |
Specific review of probable future collections based on receivable balances, threshold duration |  |  |  | 30 days |  |
Past due |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |
Financing receivables | 0 |  |  | $ 0 |  |
Notes receivable |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |
Financing receivables | $ 141,000,000 |  |  | $ 141,000,000 |  |
Notes receivable | Minimum |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |
Number of days after which receivable is considered delinquent | 60 days |  |  | 60 days |  |
Notes receivable | Maximum |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |
Number of days after which receivable is considered delinquent | 120 days |  |  | 120 days |  |
DTE Electric and DTE Gas |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |
Threshold period past due for write-off of trade accounts receivable |  |  |  | 150 days |  |
DTE Electric and DTE Gas | Accounts receivable |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |
Number of days after which receivable is considered delinquent | 21 days |  |  | 21 days |  |
DTE Electric |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |
Unrecognized tax benefits decrease as a result of a settlement related to state exposures |  | 13,000,000 |  |  |  |
Reduction to income tax expense as a result of an audit settlement related to state exposures |  | $ 10,000,000 |  |  |  |
Unrecognized tax benefits | $ 0 |  |  | $ 0 |  |
Accrued interest pertaining to income taxes |  |  |  |  |  | 8,000,000
DTE Electric | Notes receivable |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |
Financing receivables | 16,000,000 |  |  | 16,000,000 |  |
DTE Electric | DTE Energy |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |
Allocated costs | 7,000,000 |  | $ 9,000,000 | 27,000,000 | $ 30,000,000 |
DTE Electric | DTE Energy | Federal taxes |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |
Accounts receivable | $ 7,000,000 |  |  | $ 7,000,000 |  |
DTE Electric | DTE Energy | State taxes |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |
Accounts receivable |  |  |  |  |  | $ 1,000,000

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