Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating Revenues
Utility operations	$ 1,953	$ 1,733
Non-utility operations	1,825	1,289
Operating Revenues	3,778	3,022
Operating Expenses
Fuel, purchased power, and gas — utility	544	467
Fuel, purchased power, gas, and other — non-utility	1,600	968
Operation and maintenance	608	579
Depreciation and amortization	368	353
Taxes other than income	122	119
Asset (gains) losses and impairments, net	(1)	(10)
Operating Expenses	3,241	2,476
Operating Income	537	546
Other (Income) and Deductions
Interest expense	181	175
Interest income	(7)	(10)
Non-operating retirement benefits, net	4	9
Other income	(76)	(65)
Other expenses	10	46
Other (Income) and Deductions	112	155
Income Before Income Taxes	425	391
Income Tax Expense	28	49
Net Income	397	342
Less: Net Income Attributable to Noncontrolling Interests	0	2
Net Income Attributable to DTE Energy Company/DTE Electric Company	$ 397	$ 340
Basic Earnings per Common Share
Net Income Attributable to DTE Energy Company (in dollars per share)	$ 2.05	$ 1.77
Diluted Earnings per Common Share
Net Income Attributable to DTE Energy Company (in dollars per share)	$ 2.05	$ 1.76
Weighted Average Common Shares Outstanding
Basic (in shares)	194	192
Diluted (in shares)	194	192
DTE Electric
Operating Revenues
Utility operations	$ 1,360	$ 1,212
Operating Expenses
Fuel, purchased power, and gas — utility	362	297
Operation and maintenance	357	360
Depreciation and amortization	260	258
Taxes other than income	82	83
Operating Expenses	1,061	998
Operating Income	299	214
Other (Income) and Deductions
Interest expense	82	81
Interest income	0	(2)
Other income	(19)	(13)
Other expenses	8	41
Other (Income) and Deductions	71	107
Income Before Income Taxes	228	107
Income Tax Expense	20	13
Net Income Attributable to DTE Energy Company/DTE Electric Company	$ 208	$ 94