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Regulatory Matters (Schedule of Regulatory Assets) (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Regulatory Assets [Line Items] |  |
Regulatory assets | $ 6,821 | $ 6,317
Less amount included in Current Assets | (50) | (108)
Regulatory assets, noncurrent | 6,771 | 6,209
Securitized regulatory assets | 690 | 758
Recoverable undepreciated costs on retiring plants |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 2,986 | 2,736
Pension |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 1,315 | 1,421
Other postretirement costs |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 91 | 163
Fermi 2 asset retirement obligation |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 951 | 952
Removal costs asset |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 501 | 223
Enhanced tree trimming program deferred costs |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 211 | 157
Recoverable Michigan income taxes |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 119 | 133
Recoverable income taxes related to AFUDC equity |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 116 | 89
Energy Waste Reduction incentive |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 102 | 90
Renewable ITC offset |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 89 | 0
Deferred environmental costs |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 43 | 46
Unamortized loss on reacquired debt |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 38 | 41
Customer360 deferred costs |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 34 | 38
Ludington contract dispute costs |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 31 | 10
Accrued PSCR/GCR revenue |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 0 | 55
Other |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 194 | 163
DTE Electric |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 6,226 | 5,695
Less amount included in Current Assets | (39) | (99)
Regulatory assets, noncurrent | 6,187 | 5,596
Securitized regulatory assets | 690 | 758
DTE Electric | Recoverable undepreciated costs on retiring plants |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 2,986 | 2,736
DTE Electric | Pension |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 971 | 1,045
DTE Electric | Other postretirement costs |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 0 | 67
DTE Electric | Fermi 2 asset retirement obligation |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 951 | 952
DTE Electric | Removal costs asset |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 501 | 223
DTE Electric | Enhanced tree trimming program deferred costs |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 211 | 157
DTE Electric | Recoverable Michigan income taxes |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 99 | 110
DTE Electric | Recoverable income taxes related to AFUDC equity |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 107 | 80
DTE Electric | Energy Waste Reduction incentive |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 82 | 72
DTE Electric | Renewable ITC offset |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 89 | 0
DTE Electric | Deferred environmental costs |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 0 | 0
DTE Electric | Unamortized loss on reacquired debt |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 29 | 31
DTE Electric | Customer360 deferred costs |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 34 | 38
DTE Electric | Ludington contract dispute costs |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 31 | 10
DTE Electric | Accrued PSCR/GCR revenue |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | 0 | 55
DTE Electric | Other |  |
Regulatory Assets [Line Items] |  |
Regulatory assets | $ 135 | $ 119

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- Definition Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are expected to be recovered through revenue sources within one year or the normal operating cycle, if longer. Such costs are capitalized if they meet both of the following criteria: a. It is probable that future revenue in an amount at least equal to the capitalized cost will result from inclusion of that cost in allowable costs for rate-making purposes. b. Based on available evidence, the future revenue will be provided to permit recovery of the previously incurred cost rather than to provide for expected levels of similar future costs. If the revenue will be provided through an automatic rate-adjustment clause, this criterion requires that the regulator's intent clearly be to permit recovery of the previously incurred cost. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 980 -SubTopic 340 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478742/980-340-50-1 + Details
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