Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Operating Revenues
Utility operations	$ 1,864	$ 1,740
Non-utility operations	1,650	2,013
Operating Revenues	3,514	3,753
Operating Expenses
Fuel, purchased power, and gas — utility	582	553
Fuel, purchased power, and gas — non-utility	1,385	1,773
Operation and maintenance	591	534
Depreciation and amortization	296	281
Taxes other than income	118	111
Asset (gains) losses and impairments, net	0	(3)
Operating Expenses	2,972	3,249
Operating Income	542	504
Other (Income) and Deductions
Interest expense	152	135
Interest income	(4)	(3)
Non-operating retirement benefits, net	9	9
Other income	(88)	(81)
Other expenses	11	25
Other (Income) and Deductions	80	85
Income Before Income Taxes	462	419
Income Tax Expense	54	68
Net Income	408	351
Less: Net Income (Loss) Attributable to Noncontrolling Interests	7	(10)
Net Income Attributable to DTE Energy Company/DTE Electric Company	$ 401	$ 361
Basic Earnings per Common Share
Net Income Attributable to DTE Energy Company (in dollars per share)	$ 2.20	$ 2.01
Diluted Earnings per Common Share
Net Income Attributable to DTE Energy Company (in dollars per share)	$ 2.19	$ 2.00
Weighted Average Common Shares Outstanding
Basic (in shares)	182	180
Diluted (in shares)	183	180
DTE Electric
Operating Revenues
Utility operations	$ 1,235	$ 1,205
Operating Expenses
Fuel, purchased power, and gas — utility	346	339
Operation and maintenance	358	320
Depreciation and amortization	221	212
Taxes other than income	84	81
Operating Expenses	1,009	952
Operating Income	226	253
Other (Income) and Deductions
Interest expense	76	68
Interest income	(1)	0
Other income	(33)	(27)
Other expenses	8	25
Other (Income) and Deductions	50	66
Income Before Income Taxes	176	187
Income Tax Expense	29	47
Net Income Attributable to DTE Energy Company/DTE Electric Company	$ 147	$ 140