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Segment and Related Information | 12 Months Ended
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Dec. 31, 2023
Segment Reporting [Abstract] |
Segment and Related Information | SEGMENT AND RELATED INFORMATION DTE Energy sets strategic goals, allocates resources, and evaluates performance based on the following structure: Electric segment consists principally of DTE Electric, which is engaged in the generation, purchase, distribution, and sale of electricity to approximately 2.3 million residential, commercial, and industrial customers in southeastern Michigan. Gas segment consists principally of DTE Gas, which is engaged in the purchase, storage, transportation, distribution, and sale of natural gas to approximately 1.3 million residential, commercial, and industrial customers throughout Michigan and the sale of storage and transportation capacity. DTE Vantage is comprised primarily of renewable energy projects that sell electricity and pipeline-quality gas and projects that deliver custom energy solutions to industrial, commercial, and institutional customers. DTE Vantage formerly included projects that produced reduced emissions fuel; however, these projects were closed as planned in 2022 upon REF facilities exhausting their eligibility for generating production tax credits. Energy Trading consists of energy marketing and trading operations. Corporate and Other includes various holding company activities, holds certain non-utility debt, and holds certain investments, including funds supporting regional development and economic growth. On July 1, 2021, DTE Energy completed the separation of DT Midstream, which was comprised of the former Gas Storage and Pipelines segment and also certain holding company activity within the Corporate and Other segment. Amounts relating to DT Midstream have been classified as discontinued operations, and Gas Storage and Pipelines is no longer a reportable segment of DTE Energy. Refer to Note 4 to the Consolidated Financial Statements, “Discontinued Operations,” for additional information. Inter-segment billing for goods and services exchanged between segments is based upon tariffed or market-based prices of the provider. Such billing primarily consists of power sales, sale and transportation of natural gas, and renewable natural gas sales in the segments below, as well as charges from Electric to other segments for use of the shared capital assets of DTE Electric. For 2021, inter-segment billing also included the sale of reduced emissions fuel at DTE Vantage.
| Year Ended December 31,
| 2023 |  | 2022 |  | 2021
| (In millions)
Electric(a) | $ | 72 |  |  | $ | 71 |  |  | $ | 64 |
Gas | 17 |  |  | 13 |  |  | 14 |
DTE Vantage | 68 |  |  | 78 |  |  | 575 |
Energy Trading | 85 |  |  | 102 |  |  | 56 |
Corporate and Other | — |  |  | — |  |  | 2 |
| $ | 242 |  |  | $ | 264 |  |  | $ | 711 |
_______________________________________ (a)Inter-segment billing for the Electric segment includes $3 million, $6 million, and $4 million relating to Non-utility operations for the years ended December 31, 2023, 2022, and 2021, respectively. All inter-segment transactions and balances are eliminated in consolidation for DTE Energy. Centrally incurred costs such as labor and overheads are assigned directly to DTE Energy's business segments or allocated based on various cost drivers, depending on the nature of service provided. The federal income tax provisions or benefits of DTE Energy’s subsidiaries are determined on an individual company basis and recognize the tax benefit of tax credits and net operating losses, if applicable. The state and local income tax provisions of the utility subsidiaries are also determined on an individual company basis and recognize the tax benefit of various tax credits and net operating losses, if applicable. The subsidiaries record federal, state, and local income taxes payable to or receivable from DTE Energy based on the federal, state, and local tax provisions of each company. The Reclassifications and Eliminations group below also includes the reclassification of deferred tax assets and prepaid pension assets, which are netted against deferred tax liabilities and accrued pension liabilities, respectively, for presentation on the DTE Energy Consolidated Statements of Financial Position. Refer to Note 10 to the Consolidated Financial Statements, "Income Taxes," for additional information regarding the Registrants' deferred taxes and to Note 20, "Retirement Benefits and Trusteed Assets," for additional information regarding pension plans. Financial data of DTE Energy's business segments follows:
| Electric |  | Gas |  | DTE Vantage |  | Energy Trading |  | Corporate and Other |  | Reclassifications and Eliminations |  | Total |  |  |  |
| (In millions)
2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Revenues — Utility operations | $ | 5,804 |  |  | 1,748 |  |  | — |  |  | — |  |  | — |  |  | (86) |  |  | $ | 7,466 |  |  |  |  |
Operating Revenues — Non-utility operations | $ | 14 |  |  | — |  |  | 809 |  |  | 4,612 |  |  | — |  |  | (156) |  |  | $ | 5,279 |  |  |  |  |
Depreciation and amortization | $ | 1,340 |  |  | 209 |  |  | 53 |  |  | 4 |  |  | — |  |  | — |  |  | $ | 1,606 |  |  |  |  |
Interest expense | $ | 432 |  |  | 102 |  |  | 15 |  |  | 18 |  |  | 270 |  |  | (46) |  |  | $ | 791 |  |  |  |  |
Interest income | $ | (20) |  |  | (9) |  |  | (32) |  |  | (9) |  |  | (33) |  |  | 46 |  |  | $ | (57) |  |  |  |  |
Equity earnings (losses) of equity method investees | $ | — |  |  | 1 |  |  | 7 |  |  | — |  |  | (5) |  |  | — |  |  | $ | 3 |  |  |  |  |
Income Tax Expense (Benefit) | $ | 78 |  |  | 93 |  |  | (22) |  |  | 112 |  |  | (92) |  |  | — |  |  | $ | 169 |  |  |  |  |
Net Income (Loss) Attributable to DTE Energy Company | $ | 772 |  |  | 294 |  |  | 153 |  |  | 336 |  |  | (158) |  |  | — |  |  | $ | 1,397 |  |  |  |  |
Investment in equity method investees | $ | 5 |  |  | 16 |  |  | 118 |  |  | — |  |  | 27 |  |  | — |  |  | $ | 166 |  |  |  |  |
Capital expenditures and acquisitions | $ | 3,128 |  |  | 746 |  |  | 57 |  |  | 3 |  |  | — |  |  | — |  |  | $ | 3,934 |  |  |  |  |
Goodwill | $ | 1,208 |  |  | 743 |  |  | 25 |  |  | 17 |  |  | — |  |  | — |  |  | $ | 1,993 |  |  |  |  |
Total Assets | $ | 32,292 |  |  | 7,722 |  |  | 1,122 |  |  | 1,166 |  |  | 4,150 |  |  | (1,697) |  |  | $ | 44,755 |  |  |  |  |
| Electric |  | Gas |  | DTE Vantage |  | Energy Trading |  | Corporate and Other |  | Reclassifications and Eliminations |  | Total |  |  |  |
| (In millions)
2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Revenues — Utility operations | $ | 6,397 |  |  | 1,924 |  |  | — |  |  | — |  |  | — |  |  | (78) |  |  | $ | 8,243 |  |  |  |  |
Operating Revenues — Non-utility operations | $ | 15 |  |  | — |  |  | 848 |  |  | 10,308 |  |  | — |  |  | (186) |  |  | $ | 10,985 |  |  |  |  |
Depreciation and amortization | $ | 1,218 |  |  | 192 |  |  | 52 |  |  | 5 |  |  | 1 |  |  | — |  |  | $ | 1,468 |  |  |  |  |
Interest expense | $ | 372 |  |  | 91 |  |  | 15 |  |  | 17 |  |  | 210 |  |  | (30) |  |  | $ | 675 |  |  |  |  |
Interest income | $ | (8) |  |  | (8) |  |  | (28) |  |  | (6) |  |  | (26) |  |  | 30 |  |  | $ | (46) |  |  |  |  |
Equity earnings of equity method investees | $ | — |  |  | 2 |  |  | — |  |  | — |  |  | (16) |  |  | — |  |  | $ | (14) |  |  |  |  |
Income Tax Expense (Benefit) | $ | 25 |  |  | 88 |  |  | 18 |  |  | (31) |  |  | (71) |  |  | — |  |  | $ | 29 |  |  |  |  |
Net Income (Loss) Attributable to DTE Energy Company | $ | 956 |  |  | 272 |  |  | 92 |  |  | (92) |  |  | (145) |  |  | — |  |  | $ | 1,083 |  |  |  |  |
Investment in equity method investees | $ | 6 |  |  | 15 |  |  | 111 |  |  | — |  |  | 33 |  |  | — |  |  | $ | 165 |  |  |  |  |
Capital expenditures and acquisitions | $ | 2,620 |  |  | 693 |  |  | 62 |  |  | 3 |  |  | — |  |  | — |  |  | $ | 3,378 |  |  |  |  |
Goodwill | $ | 1,208 |  |  | 743 |  |  | 25 |  |  | 17 |  |  | — |  |  | — |  |  | $ | 1,993 |  |  |  |  |
Total Assets | $ | 30,342 |  |  | 7,321 |  |  | 1,077 |  |  | 1,385 |  |  | 4,409 |  |  | (1,851) |  |  | $ | 42,683 |  |  |  |  |
| Electric |  | Gas |  | DTE Vantage |  | Energy Trading |  | Corporate and Other(a) |  | Reclassifications and Eliminations |  | Total from Continuing Operations |  | Discontinued Operations |  | Total
| (In millions)
2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Revenues — Utility operations | $ | 5,809 |  |  | 1,553 |  |  | — |  |  | — |  |  | — |  |  | (74) |  |  | $ | 7,288 |  |  |  |  |
Operating Revenues — Non-utility operations | $ | 12 |  |  | — |  |  | 1,482 |  |  | 6,831 |  |  | 2 |  |  | (651) |  |  | $ | 7,676 |  |  |  |  |
Depreciation and amortization | $ | 1,122 |  |  | 177 |  |  | 71 |  |  | 6 |  |  | 1 |  |  | — |  |  | $ | 1,377 |  |  |  |  |
Interest expense | $ | 338 |  |  | 81 |  |  | 28 |  |  | 5 |  |  | 270 |  |  | (92) |  |  | $ | 630 |  |  |  |  |
Interest income | $ | — |  |  | (6) |  |  | (23) |  |  | (1) |  |  | (84) |  |  | 92 |  |  | $ | (22) |  |  |  |  |
Equity earnings of equity method investees | $ | — |  |  | 1 |  |  | 8 |  |  | — |  |  | 29 |  |  | — |  |  | $ | 38 |  |  |  |  |
Income Tax Expense (Benefit) | $ | 104 |  |  | 38 |  |  | (31) |  |  | (27) |  |  | (214) |  |  | — |  |  | $ | (130) |  |  |  |  |
Net Income (Loss) Attributable to DTE Energy Company | $ | 864 |  |  | 214 |  |  | 168 |  |  | (83) |  |  | (367) |  |  | — |  |  | $ | 796 |  |  | 111 |  |  | $ | 907 |
Investment in equity method investees | $ | 6 |  |  | 13 |  |  | 118 |  |  | — |  |  | 50 |  |  | — |  |  | $ | 187 |  |  |  |  |
Capital expenditures and acquisitions | $ | 3,016 |  |  | 621 |  |  | 69 |  |  | 6 |  |  | — |  |  | — |  |  | $ | 3,712 |  |  | 60 |  |  | $ | 3,772 |
Goodwill | $ | 1,208 |  |  | 743 |  |  | 25 |  |  | 17 |  |  | — |  |  | — |  |  | $ | 1,993 |  |  |  |  |
Total Assets | $ | 28,524 |  |  | 6,729 |  |  | 983 |  |  | 1,174 |  |  | 4,281 |  |  | (1,972) |  |  | $ | 39,719 |  |  | — |  |  | $ | 39,719 |
_______________________________________ (a)Corporate and Other results include significant one-time items resulting from the separation of DT Midstream, including a loss on debt extinguishment of $376 million following the settlement of intercompany borrowings with DT Midstream and optional redemption of DTE Energy long-term debt. DTE Energy also recognized a tax benefit of $85 million for the remeasurement of state deferred tax liabilities following the separation of DT Midstream. Reclassifications and Eliminations include $14 million of Operating Revenues — Non-utility operations for the year ended December 31, 2021 for eliminations related to DTE Energy's prior Gas Storage and Pipelines segment that remain in continuing operations. Eliminations for these revenues are offset by related cost eliminations and have no impact on DTE Energy net income.

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