Consolidated Statements of Operations (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Operating Revenues	$ 2,206	$ 2,265	$ 6,480	$ 6,724
Operating Expenses
Fuel, purchased power and gas	761	866	2,347	2,708
Operation and maintenance	692	670	2,126	1,948
Depreciation, depletion and amortization	265	259	747	752
Taxes other than income	80	79	254	239
Asset (gains) and losses, reserves and impairments, net	(2)	(8)	(10)	0
Total operating expenses	1,796	1,866	5,464	5,647
Operating Income	410	399	1,016	1,077
Other (Income) and Deductions
Interest expense	112	120	334	370
Interest income	(2)	(3)	(7)	(8)
Other income	(47)	(20)	(125)	(59)
Other expenses	9	16	28	31
Total Other (Income) and Deductions	72	113	230	334
Income Before Income Taxes	338	286	786	743
Income Tax Expense	108	101	251	180
Net Income	230	185	535	563
Less: Net Income Attributable to Noncontrolling Interests	3	2	6	2
Net Income Attributable to DTE Energy Company	$ 227	$ 183	$ 529	$ 561
Basic Earnings per Common Share
Net Income Attributable to DTE Energy Company	$ 1.32	$ 1.08	$ 3.09	$ 3.31
Diluted Earnings per Common Share
Net Income Attributable to DTE Energy Company	$ 1.31	$ 1.07	$ 3.08	$ 3.30
Weighted Average Common Shares Outstanding
Basic	172	169	171	169
Diluted	172	170	171	170
Dividends Declared per Common Share	$ 0.62	$ 0.59	$ 1.80	$ 1.74