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Segment and Related Information (Financial Data) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Segment Reporting Information [Line Items] |  |  |
Operating Revenues — Utility operations | $ 7,466 | $ 8,243 | $ 7,288
Operating Revenues — Non-utility operations | 5,279 | 10,985 | 7,676
Depreciation and amortization | 1,606 | 1,468 | 1,377
Interest expense | 791 | 675 | 630
Interest income | (57) | (46) | (22)
Equity earnings (losses) of equity method investees | 3 | (14) | 38
Income Tax Expense (Benefit) | 169 | 29 | (130)
Net Income (Loss) Attributable to DTE Energy Company | 1,397 | 1,083 | 907
Investments in equity method investees | 166 | 165 |
Capital expenditures and acquisitions | 3,934 | 3,378 | 3,772
Goodwill | 1,993 | 1,993 |
Total Assets | 44,755 | 42,683 | 39,719
Loss on extinguishment of debt | 0 | 0 | 393
Continuing operations |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenues — Utility operations |  |  | 7,288
Operating Revenues — Non-utility operations |  |  | 7,676
Depreciation and amortization |  |  | 1,377
Interest expense |  |  | 630
Interest income |  |  | (22)
Equity earnings (losses) of equity method investees |  |  | 38
Income Tax Expense (Benefit) |  |  | (130)
Net Income (Loss) Attributable to DTE Energy Company |  |  | 796
Investments in equity method investees |  |  | 187
Capital expenditures and acquisitions |  |  | 3,712
Goodwill |  |  | 1,993
Total Assets |  |  | 39,719
Discontinued operations |  |  |
Segment Reporting Information [Line Items] |  |  |
Net Income (Loss) Attributable to DTE Energy Company |  |  | 111
Capital expenditures and acquisitions |  |  | 60
Total Assets |  |  | 0
Operating Segments | Electric |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenues — Utility operations | 5,804 | 6,397 |
Operating Revenues — Non-utility operations | 14 | 15 |
Depreciation and amortization | 1,340 | 1,218 |
Interest expense | 432 | 372 |
Interest income | (20) | (8) |
Equity earnings (losses) of equity method investees | 0 | 0 |
Income Tax Expense (Benefit) | 78 | 25 |
Net Income (Loss) Attributable to DTE Energy Company | 772 | 956 |
Investments in equity method investees | 5 | 6 |
Capital expenditures and acquisitions | 3,128 | 2,620 |
Goodwill | 1,208 | 1,208 |
Total Assets | 32,292 | 30,342 |
Operating Segments | Electric | Continuing operations |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenues — Utility operations |  |  | 5,809
Operating Revenues — Non-utility operations |  |  | 12
Depreciation and amortization |  |  | 1,122
Interest expense |  |  | 338
Interest income |  |  | 0
Equity earnings (losses) of equity method investees |  |  | 0
Income Tax Expense (Benefit) |  |  | 104
Net Income (Loss) Attributable to DTE Energy Company |  |  | 864
Investments in equity method investees |  |  | 6
Capital expenditures and acquisitions |  |  | 3,016
Goodwill |  |  | 1,208
Total Assets |  |  | 28,524
Operating Segments | Gas |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenues — Utility operations | 1,748 | 1,924 |
Operating Revenues — Non-utility operations | 0 | 0 |
Depreciation and amortization | 209 | 192 |
Interest expense | 102 | 91 |
Interest income | (9) | (8) |
Equity earnings (losses) of equity method investees | 1 | 2 |
Income Tax Expense (Benefit) | 93 | 88 |
Net Income (Loss) Attributable to DTE Energy Company | 294 | 272 |
Investments in equity method investees | 16 | 15 |
Capital expenditures and acquisitions | 746 | 693 |
Goodwill | 743 | 743 |
Total Assets | 7,722 | 7,321 |
Operating Segments | Gas | Continuing operations |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenues — Utility operations |  |  | 1,553
Operating Revenues — Non-utility operations |  |  | 0
Depreciation and amortization |  |  | 177
Interest expense |  |  | 81
Interest income |  |  | (6)
Equity earnings (losses) of equity method investees |  |  | 1
Income Tax Expense (Benefit) |  |  | 38
Net Income (Loss) Attributable to DTE Energy Company |  |  | 214
Investments in equity method investees |  |  | 13
Capital expenditures and acquisitions |  |  | 621
Goodwill |  |  | 743
Total Assets |  |  | 6,729
Operating Segments | DTE Vantage |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenues — Utility operations | 0 | 0 |
Operating Revenues — Non-utility operations | 809 | 848 |
Depreciation and amortization | 53 | 52 |
Interest expense | 15 | 15 |
Interest income | (32) | (28) |
Equity earnings (losses) of equity method investees | 7 | 0 |
Income Tax Expense (Benefit) | (22) | 18 |
Net Income (Loss) Attributable to DTE Energy Company | 153 | 92 |
Investments in equity method investees | 118 | 111 |
Capital expenditures and acquisitions | 57 | 62 |
Goodwill | 25 | 25 |
Total Assets | 1,122 | 1,077 |
Operating Segments | DTE Vantage | Continuing operations |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenues — Utility operations |  |  | 0
Operating Revenues — Non-utility operations |  |  | 1,482
Depreciation and amortization |  |  | 71
Interest expense |  |  | 28
Interest income |  |  | (23)
Equity earnings (losses) of equity method investees |  |  | 8
Income Tax Expense (Benefit) |  |  | (31)
Net Income (Loss) Attributable to DTE Energy Company |  |  | 168
Investments in equity method investees |  |  | 118
Capital expenditures and acquisitions |  |  | 69
Goodwill |  |  | 25
Total Assets |  |  | 983
Operating Segments | Energy Trading |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenues — Utility operations | 0 | 0 |
Operating Revenues — Non-utility operations | 4,612 | 10,308 |
Depreciation and amortization | 4 | 5 |
Interest expense | 18 | 17 |
Interest income | (9) | (6) |
Equity earnings (losses) of equity method investees | 0 | 0 |
Income Tax Expense (Benefit) | 112 | (31) |
Net Income (Loss) Attributable to DTE Energy Company | 336 | (92) |
Investments in equity method investees | 0 | 0 |
Capital expenditures and acquisitions | 3 | 3 |
Goodwill | 17 | 17 |
Total Assets | 1,166 | 1,385 |
Operating Segments | Energy Trading | Continuing operations |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenues — Utility operations |  |  | 0
Operating Revenues — Non-utility operations |  |  | 6,831
Depreciation and amortization |  |  | 6
Interest expense |  |  | 5
Interest income |  |  | (1)
Equity earnings (losses) of equity method investees |  |  | 0
Income Tax Expense (Benefit) |  |  | (27)
Net Income (Loss) Attributable to DTE Energy Company |  |  | (83)
Investments in equity method investees |  |  | 0
Capital expenditures and acquisitions |  |  | 6
Goodwill |  |  | 17
Total Assets |  |  | 1,174
Operating Segments | Corporate and Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenues — Utility operations | 0 | 0 |
Operating Revenues — Non-utility operations | 0 | 0 |
Depreciation and amortization | 0 | 1 |
Interest expense | 270 | 210 |
Interest income | (33) | (26) |
Equity earnings (losses) of equity method investees | (5) | (16) |
Income Tax Expense (Benefit) | (92) | (71) |
Net Income (Loss) Attributable to DTE Energy Company | (158) | (145) |
Investments in equity method investees | 27 | 33 |
Capital expenditures and acquisitions | 0 | 0 |
Goodwill | 0 | 0 |
Total Assets | 4,150 | 4,409 |
Loss on extinguishment of debt |  |  | 376
Deferred tax benefit for deferred tax remeasurement |  |  | 85
Operating Segments | Corporate and Other | Continuing operations |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenues — Utility operations |  |  | 0
Operating Revenues — Non-utility operations |  |  | 2
Depreciation and amortization |  |  | 1
Interest expense |  |  | 270
Interest income |  |  | (84)
Equity earnings (losses) of equity method investees |  |  | 29
Income Tax Expense (Benefit) |  |  | (214)
Net Income (Loss) Attributable to DTE Energy Company |  |  | (367)
Investments in equity method investees |  |  | 50
Capital expenditures and acquisitions |  |  | 0
Goodwill |  |  | 0
Total Assets |  |  | 4,281
Reclassifications and Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenues — Utility operations | (86) | (78) |
Operating Revenues — Non-utility operations | (156) | (186) |
Depreciation and amortization | 0 | 0 |
Interest expense | (46) | (30) |
Interest income | 46 | 30 |
Equity earnings (losses) of equity method investees | 0 | 0 |
Income Tax Expense (Benefit) | 0 | 0 |
Net Income (Loss) Attributable to DTE Energy Company | 0 | 0 |
Investments in equity method investees | 0 | 0 |
Capital expenditures and acquisitions | 0 | 0 |
Goodwill | 0 | 0 |
Total Assets | (1,697) | (1,851) |
Reclassifications and Eliminations | Continuing operations |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenues — Utility operations |  |  | (74)
Operating Revenues — Non-utility operations |  |  | (651)
Depreciation and amortization |  |  | 0
Interest expense |  |  | (92)
Interest income |  |  | 92
Equity earnings (losses) of equity method investees |  |  | 0
Income Tax Expense (Benefit) |  |  | 0
Net Income (Loss) Attributable to DTE Energy Company |  |  | 0
Investments in equity method investees |  |  | 0
Capital expenditures and acquisitions |  |  | 0
Goodwill |  |  | 0
Total Assets |  |  | (1,972)
Reclassifications and Eliminations | Electric |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating Revenues — Non-utility operations | $ (3) | $ (6) | $ (4)

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