Consolidated Statements of Operations (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Operating Revenues	$ 2,387	$ 2,190	$ 7,128	$ 6,442
Operating Expenses
Fuel, purchased power and gas	967	761	2,931	2,347
Operation and maintenance	728	687	2,168	2,111
Depreciation, depletion and amortization	284	259	811	730
Taxes other than income	84	78	262	252
Asset (gains) and losses, reserves and impairments, net	(5)	(1)	(6)	(10)
Total operating expenses	2,058	1,784	6,166	5,430
Operating Income	329	406	962	1,012
Other (Income) and Deductions
Interest expense	106	109	327	331
Interest income	(2)	(2)	(7)	(7)
Other income	(58)	(47)	(148)	(125)
Other expenses	7	9	23	27
Total Other (Income) and Deductions	(53)	(69)	(195)	(226)
Income Before Income Taxes	276	337	767	786
Income Tax Expense	76	108	225	251
Income from Continuing Operations	200	229	542	535
Loss from Discontinued Operations, net of tax	0	1	0	0
Net Income	200	230	542	535
Less: Net Income Attributable to Noncontrolling Interests	2	3	5	6
Net Income Attributable to DTE Energy Company	$ 198	$ 227	$ 537	$ 529
Basic Earnings per Common Share
Total Basic Earnings per Common Share	$ 1.13	$ 1.32	$ 3.07	$ 3.09
Income from continuing operations	$ 1.13	$ 1.31	$ 3.07	$ 3.09
Loss from discontinued operations, net of tax	$ 0.00	$ 0.01	$ 0.00	$ 0.00
Diluted Earnings per Common Share
Total Diluted Earnings per Common Share	$ 1.13	$ 1.31	$ 3.07	$ 3.08
Income from continuing operations	$ 1.13	$ 1.30	$ 3.07	$ 3.08
Loss from discontinued operations, net of tax	$ 0.00	$ 0.01	$ 0.00	$ 0.00
Weighted Average Common Shares Outstanding
Basic	175	172	174	171
Diluted	176	172	175	171
Dividends Declared per Common Share	$ 0.66	$ 0.62	$ 1.93	$ 1.80