Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating Revenues
Utility operations	$ 1,740	$ 1,718
Non-utility operations	2,013	1,518
Operating Revenues	3,753	3,236
Operating Expenses
Fuel, purchased power, and gas — utility	553	529
Fuel, purchased power, and gas — non-utility	1,773	1,180
Operation and maintenance	534	584
Depreciation and amortization	281	249
Taxes other than income	111	109
Asset (gains) losses and impairments, net	(3)	0
Operating Expenses	3,249	2,651
Operating Income	504	585
Other (Income) and Deductions
Interest expense	135	125
Interest income	(3)	(3)
Non-operating retirement benefits, net	9	16
Other income	(81)	(64)
Other expenses	25	7
Total Other (Income) and Deductions	85	81
Income Before Income Taxes	419	504
Income Tax Expense	68	110
Net Income	351	394
Less: Net Loss Attributable to Noncontrolling Interests	(10)	(6)
Net Income Attributable to DTE Energy Company/DTE Electric Company	$ 361	$ 400
Basic Earnings per Common Share
Net Income Attributable to DTE Energy Company (in dollars per share)	$ 2.01	$ 2.23
Diluted Earnings per Common Share
Net Income Attributable to DTE Energy Company (in dollars per share)	$ 2.00	$ 2.23
Weighted Average Common Shares Outstanding
Basic (in shares)	180	179
Diluted (in shares)	180	179
Dividends Declared per Common Share (in dollars per share)	$ 0.8825	$ 0.825
DTE Electric
Operating Revenues
Utility operations	$ 1,205	$ 1,175
Operating Expenses
Fuel and purchased power — utility	339	314
Operation and maintenance	320	383
Depreciation and amortization	212	181
Taxes other than income	81	80
Operating Expenses	952	958
Operating Income	253	217
Other (Income) and Deductions
Interest expense	68	66
Other income	(27)	(19)
Other expenses	25	7
Total Other (Income) and Deductions	66	54
Income Before Income Taxes	187	163
Income Tax Expense	47	57
Net Income Attributable to DTE Energy Company/DTE Electric Company	$ 140	$ 106