Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Operating Revenues
Utility operations	$ 1,423	$ 1,435	$ 3,141	$ 3,099
Non-utility operations	1,432	827	2,950	1,729
Operating Revenues	2,855	2,262	6,091	4,828
Operating Expenses
Fuel, purchased power, and gas — utility	396	414	925	979
Fuel, purchased power, and gas — non-utility	1,248	717	2,428	1,493
Operation and maintenance	559	542	1,159	1,058
Depreciation and amortization	249	243	498	472
Taxes other than income	97	91	206	190
Asset (gains) losses and impairments, net	3	(1)	3	(1)
Operating Expenses	2,552	2,006	5,219	4,191
Operating Income	303	256	872	637
Other (Income) and Deductions
Interest expense	133	114	258	227
Interest income	(2)	(3)	(5)	(14)
Other income	(66)	(57)	(130)	(109)
Other expenses	6	7	13	15
Total Other (Income) and Deductions	71	61	136	119
Income Before Income Taxes	232	195	736	518
Income Tax Expense	57	50	167	133
Net Income	175	145	569	385
Less: Net Loss Attributable to Noncontrolling Interests	(2)	(7)	(8)	(14)
Net Income Attributable to DTE Energy Company/DTE Electric Company	$ 177	$ 152	$ 577	$ 399
Basic Earnings per Common Share
Net Income Attributable to DTE Energy Company (in dollars per share)	$ 0.99	$ 0.84	$ 3.21	$ 2.22
Diluted Earnings per Common Share
Net Income Attributable to DTE Energy Company (in dollars per share)	$ 0.99	$ 0.84	$ 3.21	$ 2.22
Weighted Average Common Shares Outstanding
Basic (in shares)	179	179	179	179
Diluted (in shares)	179	180	179	180
Dividends Declared per Common Share (in dollars per share)	$ 0.825	$ 0.73	$ 1.65	$ 1.46
DTE Electric
Operating Revenues
Utility operations	$ 1,218	$ 1,215	$ 2,393	$ 2,368
Operating Expenses
Fuel and purchased power — utility	355	361	669	696
Operation and maintenance	336	332	719	656
Depreciation and amortization	180	187	361	363
Taxes other than income	75	70	155	143
Operating Expenses	946	950	1,904	1,858
Operating Income	272	265	489	510
Other (Income) and Deductions
Interest expense	72	65	138	130
Interest income	0	0	0	(8)
Other income	(17)	(17)	(36)	(33)
Other expenses	5	6	12	13
Total Other (Income) and Deductions	60	54	114	102
Income Before Income Taxes	212	211	375	408
Income Tax Expense	74	76	131	146
Net Income Attributable to DTE Energy Company/DTE Electric Company	$ 138	$ 135	$ 244	$ 262