Segment and Related Information (Notes)

12 Months Ended

Dec. 31, 2014

Segment Reporting [Abstract]

Segment and Related Information

SEGMENT AND RELATED INFORMATION

The Company sets strategic goals, allocates resources and evaluates performance based on the following structure:

Electric segment consists principally of DTE Electric, which is engaged in the generation, purchase, distribution and sale of electricity to approximately 2.1 million residential, commercial and industrial customers in southeastern Michigan.

Gas segment consists principally of DTE Gas, which is engaged in the purchase, storage, transportation, distribution and sale of natural gas to approximately 1.2 million residential, commercial and industrial customers throughout Michigan and the sale of storage and transportation capacity.

Gas Storage and Pipelines consists of natural gas pipeline, gathering and storage businesses.

Power and Industrial Projects is comprised primarily of projects that deliver energy and utility-type products and services to industrial, commercial and institutional customers; produce REF and sell electricity from renewable energy projects.

Energy Trading consists of energy marketing and trading operations.

Corporate and Other, includes various holding company activities, holds certain non-utility debt and energy-related investments.

The federal income tax provisions or benefits of DTE Energy’s subsidiaries are determined on an individual company basis and recognize the tax benefit of production tax credits and net operating losses if applicable. The state and local income tax provisions of the utility subsidiaries are determined on an individual company basis and recognize the tax benefit of various tax credits and net operating losses, if applicable. The subsidiaries record federal, state and local income taxes payable to or receivable from DTE Energy based on the federal, state and local tax provisions of each company.

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:

	2014		2013			2012
	(In millions)
Electric	$	29	$	26		$	29
Gas	6		4			4
Power and Industrial Projects	794		816			801
Gas Storage and Pipelines	9		3			6
Energy Trading	33		43			43
Corporate and Other	3		(24		)	(37		)
Discontinued Operations	—		—			2
	$	874	$	868		$	848

Financial data of the business segments follows:

	Operating Revenue			Depreciation, Depletion & Amortization		Interest Income			Interest Expense			Income Tax Expense (Benefit)			Net Income (Loss) Attributable to DTE Energy Company			Total Assets			Goodwill		Capital Expenditures and Acquisitions
	(In millions)
2014
Electric	$	5,283		$	933	$	(1	)	$	250		$	296		$	528		$	18,715		$	1,208	$	1,561
Gas	1,636			99		(7		)	57			78			140			4,283			743		224
Power and Industrial Projects	2,289			77		(5		)	28			(100		)	90			1,009			26		77
Gas Storage and Pipelines	203			34		(6		)	22			53			82			884			24		184
Energy Trading	3,762			1		—			7			77			122			755			17		3
Corporate and Other	2			1		(48		)	122			(40		)	(57		)	3,209			—		—
Reclassifications and Eliminations	(874		)	—		57			(57		)	—			—			(881		)	—		—
Total	$	12,301		$	1,145	$	(10	)	$	429		$	364		$	905		$	27,974		$	2,018	$	2,049

	Operating Revenue			Depreciation, Depletion & Amortization		Interest Income			Interest Expense			Income Tax Expense (Benefit)			Net Income (Loss) Attributable to DTE Energy Company			Total Assets			Goodwill		Capital Expenditures and Acquisitions
	(In millions)
2013
Electric	$	5,199		$	902	$	(1	)	$	268		$	252		$	484		$	17,508		$	1,208	$	1,325
Gas	1,474			95		(7		)	58			77			143			3,938			743		209
Power and Industrial Projects	1,950			72		(6		)	27			(45		)	66			1,067			26		93
Gas Storage and Pipelines	132			23		(7		)	18			45			70			824			24		245
Energy Trading	1,771			1		—			8			(38		)	(58		)	623			17		3
Corporate and Other	3			1		(51		)	120			(37		)	(44		)	2,945			—		1
Reclassifications and Eliminations	(868		)	—		63			(63		)	—			—			(970		)	—		—
Total	$	9,661		$	1,094	$	(9	)	$	436		$	254		$	661		$	25,935		$	2,018	$	1,876

	Operating Revenue			Depreciation, Depletion & Amortization		Interest Income			Interest Expense			Income Tax Expense (Benefit)			Net Income (Loss) Attributable to DTE Energy Company			Total Assets			Goodwill		Capital Expenditures and Acquisitions
	(In millions)
2012
Electric	$	5,293		$	827	$	(1	)	$	272		$	280		$	483		$	17,755		$	1,208	$	1,230
Gas	1,315			92		(7		)	59			50			115			4,059			745		221
Power and Industrial Projects	1,823			65		(7		)	37			(44		)	42			991			26		281
Gas Storage and Pipelines	96			8		(8		)	8			39			61			668			22		233
Energy Trading	1,109			2		—			8			7			12			629			17		1
Corporate and Other	3			1		(52		)	121			(46		)	(47		)	3,074			—		3
Reclassifications and Eliminations	(848		)	—		65			(65		)	—			—			(837		)	—		—
Total from Continuing Operations	$	8,791		$	995	$	(10	)	$	440		$	286		$	666		$	26,339		$	2,018	$	1,969
Discontinued Operations (Note 4)															(56		)	—			—		49
Total															$	610		$	26,339		$	2,018	$	2,018