Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Operating Revenues
Utility operations	$ 1,718	$ 1,664
Non-utility operations	1,518	902
Operating Revenues	3,236	2,566
Operating Expenses
Fuel, purchased power, and gas — utility	529	565
Fuel, purchased power, and gas — non-utility	1,180	776
Operation and maintenance	600	516
Depreciation and amortization	249	229
Taxes other than income	109	99
Operating Expenses	2,667	2,185
Operating Income	569	381
Other (Income) and Deductions
Interest expense	125	113
Interest income	(3)	(11)
Other income	64	52
Other expenses	7	8
Total Other (Income) and Deductions	65	58
Income Before Income Taxes	504	323
Income Tax Expense	110	83
Net Income	394	240
Less: Net Loss Attributable to Noncontrolling Interests	(6)	(7)
Net Income Attributable to DTE Energy Company/DTE Electric Company	$ 400	$ 247
Basic Earnings per Common Share
Net Income Attributable to DTE Energy Company (in dollars per share)	$ 2.23	$ 1.38
Diluted Earnings per Common Share
Net Income Attributable to DTE Energy Company (in dollars per share)	$ 2.23	$ 1.37
Weighted Average Common Shares Outstanding
Basic (in shares)	179	179
Diluted (in shares)	179	180
Dividends Declared per Common Share (in dollars per share)	$ 0.825	$ 0.73
DTE Electric
Operating Revenues
Utility operations	$ 1,175	$ 1,153
Operating Expenses
Fuel and purchased power — utility	314	335
Operation and maintenance	383	324
Depreciation and amortization	181	176
Taxes other than income	80	73
Operating Expenses	958	908
Operating Income	217	245
Other (Income) and Deductions
Interest expense	66	65
Interest income	0	(8)
Other income	19	16
Other expenses	7	7
Total Other (Income) and Deductions	54	48
Income Before Income Taxes	163	197
Income Tax Expense	57	70
Net Income Attributable to DTE Energy Company/DTE Electric Company	$ 106	$ 127