Consolidated Statements of Operations (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Operating Revenues	$ 2,698	$ 2,225	$ 6,628	$ 4,741
Operating Expenses
Fuel, purchased power and gas	1,276	940	3,431	1,964
Operation and maintenance	811	705	1,652	1,440
Depreciation, depletion and amortization	282	268	562	527
Taxes other than income	87	84	182	178
Asset (gains) and losses, reserves and impairments, net	(7)	5	(8)	(1)
Total operating expenses	2,449	2,002	5,819	4,108
Operating Income	249	223	809	633
Other (Income) and Deductions
Interest expense	106	112	216	221
Interest income	(3)	(3)	(5)	(5)
Other income	(40)	(46)	(81)	(90)
Other expenses	10	9	18	16
Total Other (Income) and Deductions	73	72	148	142
Income Before Income Taxes	176	151	661	491
Income Tax Expense	50	44	208	149
Net Income	126	107	453	342
Less: Net Income Attributable to Noncontrolling Interests	2	2	3	3
Net Income Attributable to DTE Energy Company	$ 124	$ 105	$ 450	$ 339
Basic Earnings per Common Share
Total Basic Earnings per Common Share	$ 0.70	$ 0.60	$ 2.54	$ 1.94
Diluted Earnings per Common Share
Total Diluted Earnings per Common Share	$ 0.70	$ 0.60	$ 2.54	$ 1.94
Weighted Average Common Shares Outstanding
Basic	177	174	177	174
Diluted	177	175	177	174
Dividends Declared per Common Share	$ 0.66	$ 0.66	$ 1.31	$ 1.28