Consolidated Statements of Operations (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Operating Revenues	$ 3,930	$ 2,516
Operating Expenses
Fuel, purchased power and gas	2,155	1,024
Operation and maintenance	841	735
Depreciation, depletion and amortization	280	259
Taxes other than income	95	94
Asset (gains) and losses, reserves and impairments, net	(1)	(6)
Total operating expenses	3,370	2,106
Operating Income	560	410
Other (Income) and Deductions
Interest expense	110	109
Interest income	(2)	(2)
Other income	(41)	(44)
Other expenses	8	7
Total Other (Income) and Deductions	75	70
Income Before Income Taxes	485	340
Income Tax Expense	158	105
Net Income	327	235
Less: Net Income Attributable to Noncontrolling Interests	1	1
Net Income Attributable to DTE Energy Company	$ 326	$ 234
Basic Earnings per Common Share
Total Basic Earnings per Common Share	$ 1.84	$ 1.35
Diluted Earnings per Common Share
Total Diluted Earnings per Common Share	$ 1.84	$ 1.34
Weighted Average Common Shares Outstanding
Basic	177	173
Diluted	177	173
Dividends Declared per Common Share	$ 0.66	$ 0.62