Segment Information (Tables)

6 Months Ended

Jun. 30, 2011

Segment Information (Tables) [Abstract]

Inter-segment billing for goods and services

	Three Months Ended						Six Months Ended
	June 30						June 30
(in Millions)	2011			2010			2011			2010
Electric Utility	$	9		$	9		$	18		$	15
Gas Utility		1			(1	)		1			—
Gas Storage and Pipelines		4			1			6			2
Power and Industrial Projects		63			70			89			72
Energy Trading		15			18			37			44
Corporate & Other		(11	)		(12	)		(28	)		(33	)
	$	81		$	85		$	123		$	100

Financial data of the business segments

	Three Months Ended						Six Months Ended
	June 30						June 30
(in Millions)	2011			2010			2011			2010
Operating Revenues
Electric Utility	$	1,240		$	1,208		$	2,433		$	2,354
Gas Utility		242			232			931			987
Gas Storage and Pipelines		23			21			48			42
Unconventional Gas Production		10			8			18			16
Power and Industrial Projects		287			291			522			543
Energy Trading		306			117			628			403
Corporate & Other		1			—			2			—
Reconciliation & Eliminations		(81	)		(85	)		(123	)		(100	)
Total	$	2,028		$	1,792		$	4,459		$	4,245
Net Income (Loss) Attributable to DTE Energy by Segment:
Electric Utility	$	103		$	87		$	188		$	178
Gas Utility		(3	)		19			80			98
Gas Storage and Pipelines		14			10			29			24
Unconventional Gas Production		(1	)		(2	)		(3	)		(5	)
Power and Industrial Projects		5			22			15			40
Energy Trading		12			(26	)		14			12
Corporate & Other (1)		72			(24	)		55			(32	)
Net Income Attributable to DTE Energy	$	202		$	86		$	378		$	315

(1) The 2011 net income for Corporate & Other includes an income tax benefit of $88 million related to the enactment of the MCIT in the second quarter of 2011. See Note 2.