Consolidated Statements of Operations (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Operating Revenues	$ 2,025	$ 2,028	$ 4,274	$ 4,459
Operating Expenses
Fuel, purchased power and gas	697	771	1,586	1,842
Operation and maintenance	708	647	1,434	1,278
Depreciation, depletion and amortization	250	248	482	493
Taxes other than income	79	77	174	160
Asset (gains) and losses, reserves and impairments, net	(3)	(3)	(8)	8
Total operating expenses	1,731	1,740	3,668	3,781
Operating Income	294	288	606	678
Other (Income) and Deductions
Interest expense	109	124	222	250
Interest income	(3)	(2)	(5)	(5)
Other income	(41)	(18)	(78)	(39)
Other expenses	12	8	19	15
Total Other (Income) and Deductions	77	112	158	221
Income Before Income Taxes	217	176	448	457
Income Tax Expense	70	(24)	143	79
Net Income	147	200	305	378
Less: Net Income Attributable to Noncontrolling Interests	1	(2)	3	0
Net Income Attributable to DTE Energy Company	$ 146	$ 202	$ 302	$ 378
Basic Earnings per Common Share
Net Income Attributable to DTE Energy Company	$ 0.86	$ 1.19	$ 1.77	$ 2.23
Diluted Earnings per Common Share
Net Income Attributable to DTE Energy Company	$ 0.86	$ 1.19	$ 1.77	$ 2.23
Weighted Average Common Shares Outstanding
Basic	170	169	170	169
Diluted	171	170	171	170
Dividends Declared per Common Share	$ 0.59	$ 0.59	$ 1.18	$ 1.15