Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Operating Revenues
Utility operations	$ 1,875	$ 1,844	$ 5,483	$ 5,119
Non-utility operations	1,840	1,236	4,834	3,224
Operating Revenues	3,715	3,080	10,317	8,343
Operating Expenses
Fuel, purchased power, and gas — utility	477	455	1,411	1,296
Fuel, purchased power, gas, and other — non-utility	1,766	1,174	4,708	2,923
Operation and maintenance	615	556	1,750	1,651
Depreciation and amortization	344	318	1,010	949
Taxes other than income	106	100	329	294
Asset (gains) losses and impairments, net	2	(2)	29	43
Operating Expenses	3,310	2,601	9,237	7,156
Operating Income	405	479	1,080	1,187
Other (Income) and Deductions
Interest expense	156	149	477	450
Interest income	(6)	(11)	(16)	(25)
Non-operating retirement benefits, net	3	5	10	20
Loss on extinguishment of debt	376	0	384	0
Other income	(90)	(75)	(187)	(188)
Other expenses	30	20	50	72
Other (Income) and Deductions	469	88	718	329
Income (Loss) Before Income Taxes	(64)	391	362	858
Income Tax Expense (Benefit) (Note 2)	(119)	21	(124)	19
Net Income from Continuing Operations	55	370	486	839
Income (Loss) from Discontinued Operations, Net of Taxes (Note 4)	(33)	107	112	257
Net Income	22	477	598	1,096
Less: Net Income (Loss) Attributable to Noncontrolling Interests
Continuing operations	(3)	(2)	(9)	(5)
Discontinued operations	0	3	6	8
Net Income Attributable to DTE Energy Company/DTE Electric Company	$ 25	$ 476	$ 601	$ 1,093
Basic Earnings per Common Share
Continuing operations (in dollars per share)	$ 0.30	$ 1.93	$ 2.55	$ 4.37
Discontinued operations (in dollars per share)	(0.17)	0.54	0.55	1.30
Basic Earnings per Common Share (in dollars per share)	0.13	2.47	3.10	5.67
Diluted Earnings per Common Share
Continuing operations (in dollars per share)	0.30	1.92	2.55	4.37
Discontinued operations (in dollars per share)	(0.17)	0.54	0.55	1.29
Diluted Earnings per Common Share (in dollars per share)	$ 0.13	$ 2.46	$ 3.10	$ 5.66
Weighted Average Common Shares Outstanding
Basic (in shares)	193	193	193	192
Diluted (in shares)	194	193	194	193
DTE Electric
Operating Revenues
Utility operations	$ 1,700	$ 1,690	$ 4,468	$ 4,211
Operating Expenses
Fuel, purchased power, and gas — utility	462	451	1,185	1,090
Operation and maintenance	410	361	1,122	1,074
Depreciation and amortization	278	258	810	768
Taxes other than income	83	79	245	220
Asset (gains) losses and impairments, net	0	0	0	41
Operating Expenses	1,233	1,149	3,362	3,193
Operating Income	467	541	1,106	1,018
Other (Income) and Deductions
Interest expense	84	83	251	249
Interest income	0	0	0	(2)
Non-operating retirement benefits, net	0	0	(1)	0
Other income	(14)	(18)	(52)	(68)
Other expenses	8	18	26	66
Other (Income) and Deductions	78	83	224	245
Income (Loss) Before Income Taxes	389	458	882	773
Income Tax Expense (Benefit) (Note 2)	45	58	92	96
Less: Net Income (Loss) Attributable to Noncontrolling Interests
Net Income Attributable to DTE Energy Company/DTE Electric Company	$ 344	$ 400	$ 790	$ 677