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Regulatory Matters (Schedule of Regulatory Assets) (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Mar. 17, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Regulatory Assets [Line Items] |  |  |
Regulatory assets | $ 4,336 |  | $ 3,677
Less amount included in Current Assets | (450) |  | (195)
Regulatory assets, noncurrent | 3,886 |  | 3,482
Securitized regulatory assets | 206 |  | 0
Pension |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 1,362 |  | 1,372
Other postretirement costs |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 172 |  | 53
Fermi 2 asset retirement obligation |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 972 |  | 613
Recoverable undepreciated costs on retired plants |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 594 |  | 667
Accrued PSCR/GCR revenue |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 450 |  | 160
Recoverable Michigan income taxes |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 148 |  | 163
Enhanced tree trimming program deferred costs |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 90 |  | 189
Energy Waste Reduction incentive |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 88 |  | 79
Recoverable income taxes related to AFUDC equity |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 76 |  | 68
Deferred pension costs |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 63 |  | 16
Deferred environmental costs |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 46 |  | 51
Unamortized loss on reacquired debt |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 45 |  | 51
Customer360 deferred costs |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 42 |  | 46
Non-service pension and other postretirement costs |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 32 |  | 25
Nuclear performance evaluation and review committee tracker |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 26 |  | 39
Removal costs asset |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 19 |  | 0
Advanced distribution management system costs |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 14 |  | 9
Other recoverable income taxes |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 14 |  | 16
Transitional Reconciliation Mechanism |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 13 |  | 8
Energy Waste Reduction |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 8 |  | 20
Other |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 62 |  | 32
DTE Electric |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 3,640 |  | 3,136
Less amount included in Current Assets | (421) |  | (168)
Regulatory assets, noncurrent | 3,219 |  | 2,968
Securitized regulatory assets | 206 | $ 230 | 0
DTE Electric | Pension |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 997 |  | 1,056
DTE Electric | Other postretirement costs |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 60 |  | 27
DTE Electric | Fermi 2 asset retirement obligation |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 972 |  | 613
DTE Electric | Recoverable undepreciated costs on retired plants |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 594 |  | 667
DTE Electric | Accrued PSCR/GCR revenue |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 421 |  | 142
DTE Electric | Recoverable Michigan income taxes |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 121 |  | 133
DTE Electric | Enhanced tree trimming program deferred costs |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 90 |  | 189
DTE Electric | Energy Waste Reduction incentive |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 71 |  | 63
DTE Electric | Recoverable income taxes related to AFUDC equity |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 68 |  | 61
DTE Electric | Deferred pension costs |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 41 |  | 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 | 34 |  | 38
DTE Electric | Customer360 deferred costs |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 42 |  | 46
DTE Electric | Non-service pension and other postretirement costs |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 0 |  | 0
DTE Electric | Nuclear performance evaluation and review committee tracker |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 26 |  | 39
DTE Electric | Removal costs asset |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 19 |  | 0
DTE Electric | Advanced distribution management system costs |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 14 |  | 9
DTE Electric | Other recoverable income taxes |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 14 |  | 16
DTE Electric | Transitional Reconciliation Mechanism |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 13 |  | 8
DTE Electric | Energy Waste Reduction |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | 0 |  | 0
DTE Electric | Other |  |  |
Regulatory Assets [Line Items] |  |  |
Regulatory assets | $ 43 |  | $ 29

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382 + Details
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