Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Utility operations	$ 1,664	$ 1,841
Non-utility operations	902	1,143
Operating Revenues	2,566	2,984
Operating Expenses
Fuel, purchased power, and gas — utility	565	693
Fuel, purchased power, and gas — non-utility	776	1,005
Operation and maintenance	516	526
Depreciation and amortization	229	209
Taxes other than income	99	100
Asset (gains) losses and impairments, net	0	(10)
Operating Expenses	2,185	2,523
Operating Income	381	461
Other (Income) and Deductions
Interest expense	113	110
Interest income	(11)	(4)
Other income	(52)	(51)
Other expenses	8	10
Total Other (Income) and Deductions	58	65
Income Before Income Taxes	323	396
Income Tax Expense	83	122
Net Income	240	274
Less: Net Income (Loss) Attributable to Noncontrolling Interests	(7)	1
Net Income (Loss) Attributable to DTE Energy Company/DTE Electric	$ 247	$ 273
Basic Earnings per Common Share
Net Income Attributable to DTE Energy Company (in dollars per share)	$ 1.38	$ 1.53
Diluted Earnings per Common Share
Net Income Attributable to DTE Energy Company (in dollars per share)	$ 1.37	$ 1.53
Weighted Average Common Shares Outstanding
Basic (in shares)	179	178
Diluted (in shares)	180	178
Dividends Declared per Common Share (in dollars per share)	$ 0.73	$ 0.69
DTE Electric
Utility operations	$ 1,153	$ 1,203
Operating Expenses
Fuel and purchased power — utility	335	390
Operation and maintenance	324	317
Depreciation and amortization	176	155
Taxes other than income	73	73
Operating Expenses	908	935
Operating Income	245	268
Other (Income) and Deductions
Interest expense	65	63
Interest income	(8)	0
Other income	(16)	(15)
Other expenses	7	9
Total Other (Income) and Deductions	48	57
Income Before Income Taxes	197	211
Income Tax Expense	70	74
Net Income (Loss) Attributable to DTE Energy Company/DTE Electric	$ 127	$ 137