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v3.25.2

Significant Accounting Policies (Tables) | 6 Months Ended
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Jun. 30, 2025
Accounting Policies [Abstract] |
Schedule of Other Income | The following is a summary of DTE Energy's Other income:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
| (In millions)
Allowance for equity funds used during construction | $ | 22 |  |  | $ | 20 |  |  | $ | 46 |  |  | $ | 38 |
Contract services | 11 |  |  | 6 |  |  | 20 |  |  | 13 |
Equity earnings of equity method investees | 4 |  |  | 32 |  |  | 11 |  |  | 24 |
Investment income(a) | 7 |  |  | 3 |  |  | 8 |  |  | 9 |
Other | 5 |  |  | 4 |  |  | 8 |  |  | 8 |
| $ | 49 |  |  | $ | 65 |  |  | $ | 93 |  |  | $ | 92 |
_______________________________________ (a)Investment losses are recorded separately to Other expenses on the Consolidated Statements of Operations. The following is a summary of DTE Electric's Other income:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
| (In millions)
Allowance for equity funds used during construction | $ | 22 |  |  | $ | 19 |  |  | $ | 46 |  |  | $ | 37 |
Contract services | 11 |  |  | 7 |  |  | 20 |  |  | 13 |
Investment income(a) | 6 |  |  | 2 |  |  | 7 |  |  | 7 |
Other | 3 |  |  | 4 |  |  | 5 |  |  | 7 |
| $ | 42 |  |  | $ | 32 |  |  | $ | 78 |  |  | $ | 64 |
_______________________________________ (a)Investment losses are recorded separately to Other expenses on the Consolidated Statements of Operations.
Schedule of Effective Income Tax Rate Reconciliation | The tables below summarize how the Registrants' effective income tax rates have varied from the statutory federal income tax rate:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
DTE Energy |  |  |  |  |  |  |
Statutory federal income tax rate | 21.0 | % |  | 21.0 | % |  | 21.0 | % |  | 21.0 | %
Increase (decrease) due to: |  |  |  |  |  |  |
State and local income taxes, net of federal benefit | 4.2 |  |  | 3.9 |  |  | 4.2 |  |  | 4.0 |
Investment tax credits | (13.7) |  |  | (2.7) |  |  | (13.2) |  |  | (2.9) |
Production tax credits | (10.2) |  |  | (7.1) |  |  | (10.4) |  |  | (7.7) |
TCJA regulatory liability amortization | (4.8) |  |  | (4.2) |  |  | (4.6) |  |  | (4.5) |
AFUDC equity | (2.0) |  |  | (1.0) |  |  | (1.6) |  |  | (1.1) |
Enactment of Illinois income tax legislation, net of federal benefit | 5.9 |  |  | — |  |  | 2.1 |  |  | — |
Other | — |  |  | 0.2 |  |  | (0.1) |  |  | (0.6) |
Effective income tax rate | 0.4 | % |  | 10.1 | % |  | (2.6) | % |  | 8.2 | %
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
DTE Electric |  |  |  |  |  |  |
Statutory federal income tax rate | 21.0 | % |  | 21.0 | % |  | 21.0 | % |  | 21.0 | %
Increase (decrease) due to: |  |  |  |  |  |  |
State and local income taxes, net of federal benefit | 5.6 |  |  | 5.3 |  |  | 5.6 |  |  | 5.3 |
Investment tax credits | (16.3) |  |  | (0.2) |  |  | (16.2) |  |  | (0.2) |
Production tax credits | (6.6) |  |  | (8.4) |  |  | (6.8) |  |  | (8.9) |
TCJA regulatory liability amortization | (4.7) |  |  | (4.4) |  |  | (4.6) |  |  | (4.6) |
AFUDC equity | (2.1) |  |  | (1.2) |  |  | (2.0) |  |  | (1.3) |
Other | (0.3) |  |  | (0.2) |  |  | (0.3) |  |  | (0.3) |
Effective income tax rate | (3.4) | % |  | 11.9 | % |  | (3.3) | % |  | 11.0 | %
Schedule of Financing Receivables Classified by Internal Grade of Credit Risk | The following represents the Registrants' financing receivables by year of origination as determined by the date the original agreement was executed, classified by internal grade of credit risk, including current year-to-date gross write-offs, if any. The related credit quality indicators and risk ratings utilized to develop the internal grades have been updated through June 30, 2025.
| DTE Energy |  | DTE Electric
| Year of Origination
| 2025 |  | 2024 |  | 2023 and Prior |  | Total |  | 2025 and Prior
| (In millions)
Notes receivable |  |  |  |  |  |  |  |  |
Internal grade 1 | $ | 13 |  |  | $ | 4 |  |  | $ | 27 |  |  | $ | 44 |  |  | $ | 41 |
Internal grade 2 | 6 |  |  | 745 |  |  | 257 |  |  | 1,008 |  |  | — |
Total notes receivable(a) | $ | 19 |  |  | $ | 749 |  |  | $ | 284 |  |  | $ | 1,052 |  |  | $ | 41 |
Net investment in leases |  |  |  |  |  |  |  |  |
Internal grade 1 | $ | — |  |  | $ | — |  |  | $ | 35 |  |  | $ | 35 |  |  | $ | — |
Internal grade 2 | — |  |  | 2 |  |  | — |  |  | 2 |  |  | — |
Total net investment in leases(a) | $ | — |  |  | $ | 2 |  |  | $ | 35 |  |  | $ | 37 |  |  | $ | — |
_______________________________________ (a)For DTE Energy, the current portion is included in Current Assets — Other on the Consolidated Statements of Financial Position. For DTE Electric, the amounts are included in Other Assets — Other on the Consolidated Statements of Financial Position.
Schedule of Roll-Forward of Activity for Financing Receivables Credit Loss Reserves | The following tables present a roll-forward of the activity for the Registrants' financing receivables credit loss reserves:
| DTE Energy |  | DTE Electric
| Trade accounts receivable |  | Other receivables |  |  |  |  |  | Total |  | Trade and other accounts receivable
| (In millions)
Beginning reserve balance, January 1, 2025 | $ | 69 |  |  | $ | 3 |  |  |  |  |  |  | $ | 72 |  |  | $ | 46 |
Current period provision | 45 |  |  | — |  |  |  |  |  |  | 45 |  |  | 22 |
Write-offs charged against allowance | (55) |  |  | — |  |  |  |  |  |  | (55) |  |  | (36) |
Recoveries of amounts previously written off | 19 |  |  | — |  |  |  |  |  |  | 19 |  |  | 13 |
Ending reserve balance, June 30, 2025 | $ | 78 |  |  | $ | 3 |  |  |  |  |  |  | $ | 81 |  |  | $ | 45 |
| DTE Energy |  | DTE Electric
| Trade accounts receivable |  | Other receivables |  |  |  |  |  | Total |  | Trade and other accounts receivable
| (In millions)
Beginning reserve balance, January 1, 2024 | $ | 62 |  |  | $ | 1 |  |  |  |  |  |  | $ | 63 |  |  | $ | 41 |
Current period provision | 74 |  |  | 2 |  |  |  |  |  |  | 76 |  |  | 49 |
Write-offs charged against allowance | (108) |  |  | — |  |  |  |  |  |  | (108) |  |  | (70) |
Recoveries of amounts previously written off | 41 |  |  | — |  |  |  |  |  |  | 41 |  |  | 26 |
Ending reserve balance, December 31, 2024 | $ | 69 |  |  | $ | 3 |  |  |  |  |  |  | $ | 72 |  |  | $ | 46 |
Schedule of Uncollectible Expense | Uncollectible expense for the Registrants is primarily comprised of the current period provision for allowance for doubtful accounts and is summarized as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
| (In millions)
DTE Energy | $ | 20 |  |  | $ | 17 |  |  | $ | 46 |  |  | $ | 38 |
DTE Electric | $ | 13 |  |  | $ | 11 |  |  | $ | 23 |  |  | $ | 21 |

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