Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Operating Revenues
Utility operations	$ 1,655	$ 1,542	$ 3,608	$ 3,275
Non-utility operations	1,574	1,041	3,399	2,330
Operating Revenues	3,229	2,583	7,007	5,605
Operating Expenses
Fuel, purchased power, and gas — utility	390	374	934	841
Fuel, purchased power, gas, and other — non-utility	1,357	789	2,957	1,757
Operation and maintenance	621	564	1,229	1,143
Depreciation and amortization	380	350	748	703
Taxes other than income	114	84	236	203
Asset (gains) losses and impairments, net	45	55	44	45
Operating Expenses	2,907	2,216	6,148	4,692
Operating Income	322	367	859	913
Other (Income) and Deductions
Interest expense	190	179	371	354
Interest income	(7)	(6)	(14)	(16)
Non-operating retirement benefits, net	3	6	7	15
Other income	(83)	(101)	(159)	(166)
Other expenses	18	6	28	52
Other (Income) and Deductions	121	84	233	239
Income Before Income Taxes	201	283	626	674
Income Tax Expense	22	6	50	55
Net Income	179	277	576	619
Less: Net Income Attributable to Noncontrolling Interests	0	0	0	2
Net Income Attributable to DTE Energy Company/DTE Electric Company	$ 179	$ 277	$ 576	$ 617
Basic Earnings per Common Share
Net Income Attributable to DTE Energy Company (in dollars per share)	$ 0.92	$ 1.44	$ 2.97	$ 3.20
Diluted Earnings per Common Share
Net Income Attributable to DTE Energy Company (in dollars per share)	$ 0.92	$ 1.44	$ 2.97	$ 3.20
Weighted Average Common Shares Outstanding
Basic (in shares)	193	192	193	192
Diluted (in shares)	194	193	194	192
DTE Electric
Operating Revenues
Utility operations	$ 1,408	$ 1,309	$ 2,768	$ 2,521
Operating Expenses
Fuel, purchased power, and gas — utility	361	342	723	639
Operation and maintenance	355	353	712	713
Depreciation and amortization	272	252	532	510
Taxes other than income	80	58	162	141
Asset (gains) losses and impairments, net	0	41	0	41
Operating Expenses	1,068	1,046	2,129	2,044
Operating Income	340	263	639	477
Other (Income) and Deductions
Interest expense	85	85	167	166
Interest income	0	0	0	(2)
Non-operating retirement benefits, net	(1)	0	(1)	0
Other income	(19)	(37)	(38)	(50)
Other expenses	10	7	18	48
Other (Income) and Deductions	75	55	146	162
Income Before Income Taxes	265	208	493	315
Income Tax Expense	27	25	47	38
Net Income Attributable to DTE Energy Company/DTE Electric Company	$ 238	$ 183	$ 446	$ 277