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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2022
Income Tax Disclosure [Abstract] |
Schedule of Effective Income Tax Rate Reconciliation | The Registrants' total Income Tax Expense varied from the statutory federal income tax rate for the following reasons:
| 2022 |  | 2021 |  | 2020
DTE Energy | (In millions)
Income Before Income Taxes | $ | 1,112 |  |  | $ | 656 |  |  | $ | 1,082 |
Income tax expense at 21% statutory rate | $ | 234 |  |  | $ | 138 |  |  | $ | 227 |
TCJA regulatory liability amortization | (155) |  |  | (103) |  |  | (76) |
Production tax credits | (91) |  |  | (138) |  |  | (121) |
Net operating loss carryback | (5) |  |  | — |  |  | (34) |
State deferred tax remeasurement due to separation of DT Midstream, net of federal benefit | — |  |  | (85) |  |  | — |
Enactment of West Virginia income tax legislation, net of federal benefit | — |  |  | 8 |  |  | — |
Deferred intercompany gain | — |  |  | 9 |  |  | — |
Valuation allowance on charitable contribution carryforwards | 9 |  |  | 18 |  |  | 3 |
State and local income taxes, excluding items above, net of federal benefit | 42 |  |  | 30 |  |  | 47 |
Other, net | (5) |  |  | (7) |  |  | (9) |
Income Tax Expense (Benefit) | $ | 29 |  |  | $ | (130) |  |  | $ | 37 |
Effective income tax rate | 2.6 | % |  | (19.9) | % |  | 3.4 | %
| 2022 |  | 2021 |  | 2020
DTE Electric | (In millions)
Income Before Income Taxes | $ | 981 |  |  | $ | 970 |  |  | $ | 887 |
Income tax expense at 21% statutory rate | $ | 206 |  |  | $ | 204 |  |  | $ | 186 |
TCJA regulatory liability amortization | (145) |  |  | (73) |  |  | (62) |
Production tax credits | (83) |  |  | (70) |  |  | (55) |
State and local income taxes, excluding items above, net of federal benefit | 56 |  |  | 54 |  |  | 50 |
Other, net | (8) |  |  | (11) |  |  | (10) |
Income Tax Expense | $ | 26 |  |  | $ | 104 |  |  | $ | 109 |
Effective income tax rate | 2.7 | % |  | 10.7 | % |  | 12.3 | %
Schedule of Components of Income Tax Expense (Benefit) | Components of the Registrants' Income Tax Expense were as follows:
| 2022 |  | 2021 |  | 2020
DTE Energy | (In millions)
Current income tax expense (benefit) |  |  |  |  |
Federal | $ | (13) |  |  | $ | (33) |  |  | $ | (249) |
State and other income tax | (2) |  |  | (12) |  |  | 4 |
Total current income taxes | (15) |  |  | (45) |  |  | (245) |
Deferred income tax expense (benefit) |  |  |  |  |
Federal | (13) |  |  | (42) |  |  | 227 |
State and other income tax | 57 |  |  | (43) |  |  | 55 |
Total deferred income taxes | 44 |  |  | (85) |  |  | 282 |
| $ | 29 |  |  | $ | (130) |  |  | $ | 37 |
| 2022 |  | 2021 |  | 2020
DTE Electric | (In millions)
Current income tax expense (benefit) |  |  |  |  |
Federal | $ | 1 |  |  | $ | (11) |  |  | $ | 15 |
State and other income tax | — |  |  | (7) |  |  | 5 |
Total current income taxes | 1 |  |  | (18) |  |  | 20 |
Deferred income tax expense (benefit) |  |  |  |  |
Federal | (46) |  |  | 47 |  |  | 30 |
State and other income tax | 71 |  |  | 75 |  |  | 59 |
Total deferred income taxes | 25 |  |  | 122 |  |  | 89 |
| $ | 26 |  |  | $ | 104 |  |  | $ | 109 |
Schedule of Deferred Tax Assets and Liabilities | The Registrants' deferred tax assets (liabilities) were comprised of the following at December 31:
| DTE Energy |  | DTE Electric
| 2022 |  | 2021 |  | 2022 |  | 2021
| (In millions)
Property, plant, and equipment | $ | (3,897) |  |  | $ | (3,826) |  |  | $ | (3,188) |  |  | $ | (3,164) |
Regulatory assets and liabilities | (493) |  |  | (124) |  |  | (589) |  |  | (230) |
Tax credit carry-forwards | 1,378 |  |  | 1,260 |  |  | 487 |  |  | 379 |
Pension and benefits | 111 |  |  | 102 |  |  | 103 |  |  | 127 |
Federal net operating loss carry-forward | 266 |  |  | 199 |  |  | 58 |  |  | 5 |
State and local net operating loss carry-forwards | 97 |  |  | 73 |  |  | 38 |  |  | 15 |
Investments in equity method investees | 65 |  |  | 59 |  |  | — |  |  | (1) |
Other | 137 |  |  | 145 |  |  | 145 |  |  | 128 |
| (2,336) |  |  | (2,112) |  |  | (2,946) |  |  | (2,741) |
Less: Valuation allowance | (58) |  |  | (51) |  |  | — |  |  | — |
Long-term deferred income tax liabilities | $ | (2,394) |  |  | $ | (2,163) |  |  | $ | (2,946) |  |  | $ | (2,741) |
Deferred income tax assets | $ | 2,317 |  |  | $ | 2,224 |  |  | $ | 1,081 |  |  | $ | 988 |
Deferred income tax liabilities | (4,711) |  |  | (4,387) |  |  | (4,027) |  |  | (3,729) |
| $ | (2,394) |  |  | $ | (2,163) |  |  | $ | (2,946) |  |  | $ | (2,741) |
Schedule of Unrecognized Tax Benefits Roll Forward | A reconciliation of the beginning and ending amount of unrecognized tax benefits for the Registrants is as follows:
| 2022 |  | 2021 |  | 2020
DTE Energy | (In millions)
Balance at January 1 | $ | 10 |  |  | $ | 10 |  |  | $ | 10 |
Additions for tax positions of prior years | 5 |  |  | — |  |  | — |
Reductions for tax positions of prior years | (2) |  |  | — |  |  | — |
Balance at December 31 | $ | 13 |  |  | $ | 10 |  |  | $ | 10 |
| 2022 |  | 2021 |  | 2020
DTE Electric | (In millions)
Balance at January 1 | $ | 13 |  |  | $ | 13 |  |  | $ | 13 |
Additions for tax positions of prior years | — |  |  | — |  |  | — |
Reductions for tax positions of prior years | — |  |  | — |  |  | — |
Balance at December 31 | $ | 13 |  |  | $ | 13 |  |  | $ | 13 |

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