Consolidated Statements of Operations (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Operating Revenues	$ 2,249	$ 2,431
Operating Expenses
Fuel, purchased power and gas	889	1,071
Operation and maintenance	726	631
Depreciation, depletion and amortization	232	245
Taxes other than income	95	83
Asset (gains) and losses, reserves and impairments, net	(5)	11
Total operating expenses	1,937	2,041
Operating Income	312	390
Other (Income) and Deductions
Interest expense	113	126
Interest income	(2)	(3)
Other income	(37)	(21)
Other expenses	7	7
Total Other (Income) and Deductions	81	109
Income Before Income Taxes	231	281
Income Tax Expense	73	103
Net Income	158	178
Less: Net Income Attributable to Noncontrolling Interests	2	2
Net Income Attributable to DTE Energy Company	$ 156	$ 176
Basic Earnings per Common Share
Net Income Attributable to DTE Energy Company	$ 0.91	$ 1.04
Diluted Earnings per Common Share
Net Income Attributable to DTE Energy Company	$ 0.91	$ 1.04
Weighted Average Common Shares Outstanding
Basic	170	169
Diluted	170	170
Dividends Declared per Common Share	$ 0.59	$ 0.56