Consolidated Statements of Operations (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Operating Revenues	$ 2,225	$ 2,013	$ 4,741	$ 4,252
Operating Expenses
Fuel, purchased power and gas	940	697	1,964	1,586
Operation and maintenance	705	703	1,440	1,424
Depreciation, depletion and amortization	268	244	527	471
Taxes other than income	84	79	178	174
Asset (gains) and losses, reserves and impairments, net	5	(4)	(1)	(9)
Total operating expenses	2,002	1,719	4,108	3,646
Operating Income	223	294	633	606
Other (Income) and Deductions
Interest expense	112	109	221	222
Interest income	(3)	(3)	(5)	(5)
Other income	(46)	(41)	(90)	(78)
Other expenses	9	11	16	18
Total Other (Income) and Deductions	72	76	142	157
Income Before Income Taxes	151	218	491	449
Income Tax Expense	44	70	149	143
Income from Continuing Operations	107	148	342	306
Loss from Discontinued Operations, net of tax	0	(1)	0	(1)
Net Income	107	147	342	305
Less: Net Income Attributable to Noncontrolling Interests	2	1	3	3
Net Income Attributable to DTE Energy Company	$ 105	$ 146	$ 339	$ 302
Basic Earnings per Common Share
Net Income Attributable to DTE Energy Company	$ 0.60	$ 0.86	$ 1.94	$ 1.77
Income from continuing operations	$ 0.60	$ 0.87	$ 1.94	$ 1.78
Loss from discontinued operations, net of tax	$ 0.00	$ (0.01)	$ 0.00	$ (0.01)
Diluted Earnings per Common Share
Net Income Attributable to DTE Energy Company	$ 0.60	$ 0.86	$ 1.94	$ 1.77
Income from continuing operations	$ 0.60	$ 0.87	$ 1.94	$ 1.78
Loss from discontinued operations, net of tax	$ 0.00	$ (0.01)	$ 0.00	$ (0.01)
Weighted Average Common Shares Outstanding
Basic	174	170	174	170
Diluted	175	171	174	171
Dividends Declared per Common Share	$ 0.66	$ 0.59	$ 1.28	$ 1.18