v3.25.2
Segment and Related Information (Profit (Loss) Financial Data) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Segment Reporting Information [Line Items]              
Operating Revenues — Utility operations $ 1,979   $ 1,879   $ 4,286 $ 4,035  
Operating Revenues — Non-utility operations 1,440   996   3,573 2,080  
Depreciation and amortization 451   427   903 850  
Interest expense 256   233   506 451  
Interest income (25)   (36)   (48) (54)  
Equity earnings (losses) of equity method investees 4   32   11 24  
Other segment items (pre-tax) 2,503   1,861   5,830 4,152  
Income Tax Expense (Benefit) 1   36   (17) 57  
Net Income (Loss) Attributable to DTE Energy Company 229 $ 445 322 $ 313 674 635  
Other Financial Data              
Investments in equity method investees 128       128   $ 128
Capital expenditures and acquisitions         1,844   4,467
Goodwill 1,993       1,993   1,993
Total Assets 50,248       50,248   48,846
Operating segments              
Segment Reporting Information [Line Items]              
Operating Revenues — Utility operations 1,998   1,900   4,328 4,077  
Operating Revenues — Non-utility operations 1,497   1,023   3,716 2,144  
Depreciation and amortization 451   427   903 850  
Interest expense 180   163   355 320  
Interest income (29)   (30)   (56) (52)  
Equity earnings (losses) of equity method investees 5   32   12 25  
Other segment items (pre-tax) 2,575   1,907   6,008 4,253  
Income Tax Expense (Benefit) (26)   62   48 129  
Net Income (Loss) Attributable to DTE Energy Company 339   362   774 696  
Other Financial Data              
Investments in equity method investees 106       106   105
Capital expenditures and acquisitions         1,844   4,467
Goodwill 1,993       1,993   1,993
Total Assets 48,622       48,622   47,098
Operating segments | Electric              
Segment Reporting Information [Line Items]              
Operating Revenues — Utility operations 1,682   1,611   3,136 3,077  
Operating Revenues — Non-utility operations 4   5   9 9  
Depreciation and amortization 380   357   762 710  
Interest expense 138   125   271 243  
Interest income (2)   (3)   (4) (5)  
Equity earnings (losses) of equity method investees 0   0   0 0  
Other segment items (pre-tax) 862   821   1,688 1,633  
Income Tax Expense (Benefit) (10)   38   (13) 56  
Net Income (Loss) Attributable to DTE Energy Company 318   278   441 449  
Other Financial Data              
Investments in equity method investees 5       5   5
Capital expenditures and acquisitions         1,533   3,659
Goodwill 1,208       1,208   1,208
Total Assets 36,731       36,731   35,400
Operating segments | Gas              
Segment Reporting Information [Line Items]              
Operating Revenues — Utility operations 316   289   1,192 1,000  
Operating Revenues — Non-utility operations 0   0   0 0  
Depreciation and amortization 55   55   109 109  
Interest expense 32   28   64 57  
Interest income (4)   (5)   (6) (6)  
Equity earnings (losses) of equity method investees 1   1   1 1  
Other segment items (pre-tax) 224   195   747 621  
Income Tax Expense (Benefit) 2   3   65 52  
Net Income (Loss) Attributable to DTE Energy Company 6   12   212 166  
Other Financial Data              
Investments in equity method investees 18       18   18
Capital expenditures and acquisitions         278   740
Goodwill 743       743   743
Total Assets 8,698       8,698   8,474
Operating segments | DTE Vantage              
Segment Reporting Information [Line Items]              
Operating Revenues — Utility operations 0   0   0 0  
Operating Revenues — Non-utility operations 169   181   357 365  
Depreciation and amortization 14   14   29 29  
Interest expense 8   7   16 13  
Interest income (21)   (19)   (41) (31)  
Equity earnings (losses) of equity method investees 4   31   11 24  
Other segment items (pre-tax) 146   107   293 281  
Income Tax Expense (Benefit) (13)   8   (21) 8  
Net Income (Loss) Attributable to DTE Energy Company 31   33   70 41  
Other Financial Data              
Investments in equity method investees 83       83   82
Capital expenditures and acquisitions         31   65
Goodwill 25       25   25
Total Assets 2,224       2,224   2,065
Operating segments | Energy Trading              
Segment Reporting Information [Line Items]              
Operating Revenues — Utility operations 0   0   0 0  
Operating Revenues — Non-utility operations 1,324   837   3,350 1,770  
Depreciation and amortization 2   1   3 2  
Interest expense 2   3   4 7  
Interest income (2)   (3)   (5) (10)  
Equity earnings (losses) of equity method investees 0   0   0 0  
Other segment items (pre-tax) 1,343   784   3,280 1,718  
Income Tax Expense (Benefit) (5)   13   17 13  
Net Income (Loss) Attributable to DTE Energy Company (16)   39   51 40  
Other Financial Data              
Investments in equity method investees 0       0   0
Capital expenditures and acquisitions         2   3
Goodwill 17       17   17
Total Assets 969       969   1,159
Corporate and Other              
Segment Reporting Information [Line Items]              
Operating Revenues — Utility operations 0   0   0 0  
Operating Revenues — Non-utility operations 0   0   0 0  
Depreciation and amortization 0   0   0 0  
Interest expense 99   87   193 162  
Interest income (19)   (23)   (34) (33)  
Equity earnings (losses) of equity method investees (1)   0   (1) (1)  
Other segment items (pre-tax) 4   2   7 5  
Income Tax Expense (Benefit) 27   (26)   (65) (72)  
Net Income (Loss) Attributable to DTE Energy Company (110)   (40)   (100) (61)  
Other Financial Data              
Investments in equity method investees 22       22   23
Capital expenditures and acquisitions         0   0
Goodwill 0       0   0
Total Assets 4,861       4,861   4,723
Reclassifications and Eliminations              
Segment Reporting Information [Line Items]              
Operating Revenues — Utility operations (19)   (21)   (42) (42)  
Operating Revenues — Non-utility operations (57)   (27)   (143) (64)  
Depreciation and amortization 0   0   0 0  
Interest expense (23)   (17)   (42) (31)  
Interest income 23   17   42 31  
Equity earnings (losses) of equity method investees 0   0   0 0  
Other segment items (pre-tax) (76)   (48)   (185) (106)  
Income Tax Expense (Benefit) 0   0   0 0  
Net Income (Loss) Attributable to DTE Energy Company 0   0   0 0  
Other Financial Data              
Investments in equity method investees 0       0   0
Capital expenditures and acquisitions         0   0
Goodwill 0       0   0
Total Assets (3,235)       (3,235)   $ (2,975)
Reclassifications and Eliminations | Electric              
Segment Reporting Information [Line Items]              
Operating Revenues — Non-utility operations $ (1)   $ (1)   $ (2) $ (2)