Segment and Related Information (Tables)

6 Months Ended

Jun. 30, 2019

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,
	2019		2018		2019		2018
	(In millions)
Electric	$	13	$	13	$	27	$	26
Gas	3		4		5		6
Gas Storage and Pipelines	3		14		6		22
Power and Industrial Projects	157		162		302		317
Energy Trading	5		5		12		12
Corporate and Other	—		—		1		1
	$	181	$	198	$	353	$	384

Financial data of DTE Energy's business segments follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2019			2018			2019			2018
	(In millions)
Operating Revenues — Utility operations
Electric	$	1,190		$	1,276		$	2,425		$	2,481
Gas	243			255			888			805
Operating Revenues — Non-utility operations
Gas Storage and Pipelines	121			122			237			241
Power and Industrial Projects	402			538			790			1,105
Energy Trading	1,113			1,164			2,414			2,662
Corporate and Other	—			2			1			2
Reconciliation and Eliminations	(181		)	(198		)	(353		)	(384		)
Total	$	2,888		$	3,159		$	6,402		$	6,912

	Three Months Ended June 30,						Six Months Ended June 30,
	2019			2018			2019			2018
	(In millions)
Net Income (Loss) Attributable to DTE Energy by Segment:
Electric	$	133		$	163		$	280		$	303
Gas	8			14			159			118
Gas Storage and Pipelines	50			60			98			122
Power and Industrial Projects	29			43			55			88
Energy Trading	(6		)	(5		)	26			26
Corporate and Other	(32		)	(41		)	(35		)	(62		)
Net Income Attributable to DTE Energy Company	$	182		$	234		$	583		$	595