Segment and Related Information (Tables)

6 Months Ended

Jun. 30, 2017

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

Inter-segment billing for goods and services exchanged between segments is based upon tariffed or market-based prices of the provider and primarily consists of the sale of reduced emissions fuel, power sales, and natural gas sales in the following segments:

	Three Months Ended June 30,				Six Months Ended June 30,
	2017		2016		2017		2016
	(In millions)
Electric	$	13	$	8	$	25	$	17
Gas	2		3		5		3
Gas Storage and Pipelines	15		3		22		5
Power and Industrial Projects	156		150		324		298
Energy Trading	8		8		19		18
Corporate and Other	—		2		1		2
	$	194	$	174	$	396	$	343

Financial data of DTE Energy's business segments follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
	(In millions)
Operating Revenues — Utility operations
Electric	$	1,218		$	1,215		$	2,393		$	2,368
Gas	220			231			777			751
Operating Revenues — Non-utility operations
Gas Storage and Pipelines	113			69			218			136
Power and Industrial Projects	507			444			1,055			890
Energy Trading	991			476			2,043			1,025
Corporate and Other	—			1			1			1
Reconciliation and Eliminations	(194		)	(174		)	(396		)	(343		)
Total	$	2,855		$	2,262		$	6,091		$	4,828

Net Income (Loss) Attributable to DTE Energy by Segment:
Electric	$	138		$	135		$	244		$	262
Gas	1			13			108			100
Gas Storage and Pipelines	40			35			85			65
Power and Industrial Projects	30			15			60			32
Energy Trading	—			(23		)	96			(30		)
Corporate and Other	(32		)	(23		)	(16		)	(30		)
Net Income Attributable to DTE Energy Company	$	177		$	152		$	577		$	399