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Significant Accounting Policies (Uncollectible Expense) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Uncollectible expense | $ 13 | $ 14 | $ 35 | $ 34
DTE Electric |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Uncollectible expense | $ 9 | $ 8 | $ 17 | $ 16

X
- Definition Financing Receivable, Credit Loss, Expense (Reversal), Adjusted For Regulatory Deferrals + References No definition available. + Details
Name: | dte_FinancingReceivableCreditLossExpenseReversalAdjustedForRegulatoryDeferrals
Namespace Prefix: | dte_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | dei_LegalEntityAxis=dte_DTEElectricMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |